WO2008044358A1 - Ensemble d'amorces destiné à la détection d'une levure saccharomyces - Google Patents
Ensemble d'amorces destiné à la détection d'une levure saccharomyces Download PDFInfo
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- WO2008044358A1 WO2008044358A1 PCT/JP2007/060154 JP2007060154W WO2008044358A1 WO 2008044358 A1 WO2008044358 A1 WO 2008044358A1 JP 2007060154 W JP2007060154 W JP 2007060154W WO 2008044358 A1 WO2008044358 A1 WO 2008044358A1
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6876—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
- C12Q1/6888—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for detection or identification of organisms
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/10—Processes for the isolation, preparation or purification of DNA or RNA
- C12N15/1003—Extracting or separating nucleic acids from biological samples, e.g. pure separation or isolation methods; Conditions, buffers or apparatuses therefor
- C12N15/1006—Extracting or separating nucleic acids from biological samples, e.g. pure separation or isolation methods; Conditions, buffers or apparatuses therefor by means of a solid support carrier, e.g. particles, polymers
- C12N15/1013—Extracting or separating nucleic acids from biological samples, e.g. pure separation or isolation methods; Conditions, buffers or apparatuses therefor by means of a solid support carrier, e.g. particles, polymers by using magnetic beads
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q2600/00—Oligonucleotides characterized by their use
- C12Q2600/156—Polymorphic or mutational markers
Definitions
- the present invention relates to a primer set for detecting Saccharomyces yeasts, and more particularly to a LAMP method primer set and a PCR method primer set for detecting Saccharomyces yeasts.
- the present invention also relates to a method for detecting and quantifying Saccharomyces yeasts using this primer set.
- Saccharomyces yeasts are widely used for the production of alcoholic beverages such as beer, wine, sake, shochu, whiskey, as well as bread. Saccharomyces cerevisiae is used in the production of top-fermented beer such as ale, wine, sake, fruit wine such as cider, and distilled spirits such as shochu and whiskey. Saccharomyces bavanus (Saccharomvces bavanus) is used in the production of wine, sherry, or foaming wine. The bottom fermenting yeast used in the manufacture of Pilsner-type beer is now classified as Saccharomvces pastorianus (Kurtzman, CP.
- Saccharomyces yeasts may also be separated in soft drinks, especially fruit juice drinkability.
- Saccharomyces yeast grows in a product, it has a great influence on the industry. Therefore, a technique for rapidly detecting and identifying these yeasts is important for quality control.
- the Saccharomyces yeast isolated from the product is a yeast that was used in the manufacturing process, it may be caused by a leak in the upstream power of the manufacturing process or a defective filtration process. If this is the case, there may be a cause such as poor cleaning of the filling machine or accumulation in the piping. Therefore, the technology to identify yeast that has been separated from the product when contaminated is important to clarify the goals to be addressed.
- Saccharomyces 'Pastorianus, Saccharomyces' Celepische, Saccharomyces 'Banus are taxonomically related, and SaccharomYces sensu stncto and ⁇ together with several yeasts such as Saccharomyces' Paradocus and Saccharomyces-Mikatae.
- Saccharomyces'Pastorianus, Saccharomyces' Celepische, Saccharomyces 'Banus are taxonomically related, and SaccharomYces sensu stncto and ⁇ together with several yeasts such as Saccharomyces' Paradocus and Saccharomyces-Mikatae.
- ⁇ * 3 ⁇ 4 forming a scientific gnole (Naumov, GI et al .: Int. J. Syst. Evol. Microbiol, 2000, vol.
- Saccharomyces' Pastorianus Saccharomyces cereviche and Saccharomyces bayanus are considered to be formed by crossing, and it has been confirmed to be a hybrid of both at gene level and chromosome level (Kielland-Brandt, MC et al .: Genetics of brewing yeast. The Yeast, 2nd ean, vol. 6, pp223—254, Edit ed by Wheals, et al., Academic Press, New York, Ryu, S.— L. et al .: Yeast, 1996, vol .12, 757, Tamai, Y.e t al: Yeast, 1998, vol.
- Known methods include karyotype analysis, mitochondrial DNA restriction enzyme cleavage analysis, rRNA gene nucleotide sequence analysis, rDNA restriction enzyme cleavage analysis, UP-PCR, isozyme analysis, PCR-temperature gradient gel electrophoresis, and real-time PCR.
- PCR and real-time PCR require advanced temperature control and fluorescence observation, expensive equipment is required. Also, PCR requires electrophoresis, staining, photography, etc. after the reaction, and it takes time to determine the results after the gene amplification process.
- RAPD PCR, amplification product restriction enzyme treatment, nucleotide sequence analysis, isozyme analysis, temperature gradient gel electrophoresis, etc. require more time and troublesome operations than normal PCR, and are performed in daily microbial testing operations. There was a problem with that.
- Saccharomyces' Pastorianus is a subgenome derived from Saccharomyces cerevisiae
- the present inventors identified the positions of chromosome translocations in the right arm of chromosome XVI, the right arm of chromosome III, and the left arm of chromosome VII of Saccharomyces pastorianus, and analyzed the genome around the translocation position. .
- the present inventors have also succeeded in developing a primer set that can accurately detect Saccharomyces yeast based on the information.
- the invention relating to the chromosomal translocation of the right arm of chromosome XVI is the first embodiment and the second embodiment, the invention relating to the chromosomal translocation of the right arm of chromosome m is the third aspect, and the invention relating to the chromosomal translocation of the chromosome left arm is a fourth aspect.
- the present inventors have recently analyzed the genome of a bottom fermentation yeast belonging to Saccharomyces' Pastorianus, and the Sc type XVI chromosome of the bottom fermentation yeast caused a translocation to the L g chromosome within the ORF of GPH1 in the right arm. Furthermore, we found that the translocation again occurred within the ORF of QCR2 toward the right arm end, and returned to the Sc type. That is, the present inventors have found that in the bottom fermenting yeast, only the Lg-type nucleotide sequence exists in the region sandwiched between GPH1 and QCR2 on the right arm of chromosome XVI.
- the present inventors designed a LAMP primer set for detecting Saccharomyces pastorianus based on the sequence of the Lg-type MET16 gene (SEQ ID NO: 6) present in the region between GPH1 and QCR2. It was found that Saccharomyces pastorianus can be accurately detected by the primer set.
- the sequence of the Lg-type MET16 gene has been previously disclosed in a public database, and is a novel sequence.
- the polynucleotide represented by at least 10 bases that hybridizes to the polynucleotide represented by the nucleotide sequence of SEQ ID NO: 6 or the complementary sequence of the nucleotide sequence of SEQ ID NO: 6 is used.
- a probe or primer for detecting Saccharomyces past QEi comprising a polynucleotide of at least 10 bases that hybridizes to a polynucleotide to be detected.
- a LAMP method primer set for detecting Saccharomyces cerevisiae 'Pastorianus comprising two or more of the above-mentioned primers.
- a PCR method primer set for detecting Saccharomyces pastorinus comprising two or more of the above-mentioned primers.
- a LAMP method primer set for detecting Saccharomyces pastorinus comprising the following polynucleotide: represented by the nucleotide sequence of SEQ ID NO: 1 A polynucleotide of at least 10 bases that hybridizes to a polynucleotide represented by a polynucleotide (FIP) or a complementary sequence of the base sequence;
- FEP polynucleotide
- the present inventors also designed a PCR primer set for detecting Saccharomyces' Pastorianus based on the chromosomal translocation position of the right arm of chromosome XVI of bottom fermenting yeast, and Saccharomyces. Pastorianus was determined by the primer set. I found it to be detected accurately.
- At least 10 bases that hybridize to the polynucleotide represented by the base sequence of SEQ ID NO: 27 or the polynucleotide represented by the complementary sequence of the base sequence are at least 10 bases that hybridize to the polynucleotide represented by the base sequence of SEQ ID NO: 27 or the polynucleotide represented by the complementary sequence of the base sequence.
- a polynucleotide of Saccharomyces' Path Trianus comprising a polynucleotide represented by the nucleotide sequence of SEQ ID NO: 28 or a polynucleotide of at least 10 nucleotides that hybridizes to the polynucleotide represented by the complementary sequence of the nucleotide sequence.
- a PCR primer set for use in detection is provided.
- a polynucleotide of at least 10 bases that hybridizes to a polynucleotide represented by the nucleotide sequence of SEQ ID NO: 30 or a polynucleotide represented by the complementary sequence of the nucleotide sequence, for the detection of Saccharomyces pastorianus PCR primer sets to be used are provided.
- a PCR method primer set used for detection of Saccharomyces' Pastorianus, wherein one primer is a polynucleotide represented by the nucleotide sequence of SEQ ID NO: 6.
- a PCR primer set is provided, which is a polynucleotide of at least 10 bases that hybridizes to either the Sc-type base sequence outside the region between GPH 1 and QCR2 on the right arm of chromosome No. 1 or its complementary sequence.
- a method for detecting Saccharomyces pastorians comprising the step of performing a nucleic acid amplification reaction by the LAMP method using the LAMP method primer set of the first aspect. Is done.
- a method for detecting Saccharomyces pastorians comprising the step of performing a nucleic acid amplification reaction by PCR using the PCR method primer set according to the first aspect.
- a method for detecting Saccharomyces pastorinus which further comprises a step of detecting a hybrid of the hybridization of the hybrid using the probe of the first aspect.
- the present inventors have found that in the bottom fermenting yeast, the region sandwiched between GPH1 and QCR2 on the right arm of chromosome XVI has only an Lg-type base sequence.
- the Sc-type nucleotide sequence in the region narrowed between GPH1 and QCR2 in the right arm of XVI dyed body does not exist in Saccharomyces' Pastorianus Saccharomyces bayanus, but in Saccharomyces cerevisiae It turned out to be specific.
- the present inventors designed a LAMP method primer set for detecting Saccharomyces cerevisiae based on the sequence of the Sc-type MET16 gene present in the region between GPH1 and QCR2, and based on the primer set, Saccharomyces cerevisiae It was found that can be detected accurately.
- a LAMP method primer set used for the detection of Saccharomyces cerevisiae comprising the following polynucleotide: A polynucleotide of at least 10 bases that hybridizes to a polynucleotide represented by the polynucleotide (FIP) or a complementary sequence of the base sequence thereof;
- a method for detecting Saccharomyces cerevisiae comprising the step of performing a nucleic acid amplification reaction by the LAMP method using the LAMP method primer set of the second aspect. Is done.
- the present inventors have found that Lg type III chromosome of bottom fermenting yeast is translocated with Sc type chromosome at the MAT locus of the right arm, and that the bottom arm of fermenting yeast contains the right arm of chromosome III.
- MAT sitting force we found that only Sc-type nucleotide sequence exists at the right arm end.
- the MAT locus of the right arm of chromosome No. 1 and the Lg base sequence from the right arm end to the right arm end do not exist in Saccharomyces cerevisiae Saccharomyces patrianus.
- the base sequence of Saccharomyces bayanus corresponding to was found to be specific to Saccharomyces bayanus.
- the present inventors designed a LAMP method primer set for detecting Saccharomyces 'Bayanus based on the sequence of the RAD18 homologous gene present in the region sandwiched from the MAT locus to the terminal, and based on the primer set, Saccharomyces' Bayanus It was found that can be detected accurately.
- a LAMP method primer set used for detection of Saccharomyces bayanus comprising the following polynucleotide: A polynucleotide of at least 10 bases that hybridizes to a polynucleotide represented by a complementary sequence (FIP) or a complementary sequence of the base sequence thereof;
- FEP complementary sequence
- the present inventors also designed a PCR primer set for detecting Saccharomyces' Pastorianus based on the chromosomal translocation position of the right arm of chromosome no. We found that Pastorian could be detected accurately.
- the polynucleotide and the polynucleotide represented by the base sequence of SEQ ID NO: 24 or a polynucleotide represented by the complementary sequence of the base sequence There is provided a PCR primer set for use in detecting Saccharomyces pastorians comprising a polynucleotide of at least 10 bases to be reduced.
- the LAMP method primer set of the third aspect is used.
- a method for detecting Saccharomyces bayanus comprising a step of performing a nucleic acid amplification reaction by the LAMP method.
- a method for detecting Saccharomyces pastorians comprising the step of performing a nucleic acid amplification reaction by PCR using the PCR method primer set of the third aspect. Is provided.
- the present inventors have found that the Lg type VII chromosome of bottom fermenting yeast is the KEM1 gene of the left arm.
- the present inventors also designed a PCR primer set for detecting Saccharomyces' Pastorianus based on the chromosomal translocation position of the left arm of chromosome VII of bottom fermenting yeast, and the Saccharomyces by the set of primers. We found that Pastorian could be detected accurately.
- a polynucleotide of Saccharomyces' Path Trianus comprising a polynucleotide represented by the nucleotide sequence of SEQ ID NO: 26 or a polynucleotide of at least 10 nucleotides that hybridizes to the polynucleotide represented by the complementary sequence of the nucleotide sequence.
- a PCR primer set for use in detection is provided.
- a method for detecting Saccharomyces pastorinus comprising the step of performing a nucleic acid amplification reaction by PCR using the PCR method primer set of the fourth aspect. Is done.
- Saccharomyces yeast can be accurately detected at the bacterial species level.
- the LAMP method primer set according to the present invention comprises LAMP It can be used for nucleic acid amplification reactions by the method, and the target bacterial species can be detected by the presence or absence of amplification products. Therefore, according to the LAMP method primer set of the present invention, Saccharomyces genus yeast can be identified accurately, rapidly and simply at the bacterial species level.
- the number of bacterial cells in a sample can be further measured. Therefore, according to the LAMP primer set according to the present invention, Saccharomyces 'Pastorianus, Saccharomyces cerevisiae, and Saccharomyces' Bayanus can be accurately quantified.
- the yeast of the genus Saccharomyces is a causative bacterium that causes turbidity of various beverages such as alcoholic beverages and soft drinks, and the presence or absence of these bacterium can be an index for quality control of various beverages. Therefore, the primer set according to the present invention is useful for quality control of various beverages (for example, alcoholic beverages and soft drinks, especially beer, sparkling wine, wine) and inspection of environmental samples.
- FIG. 1 is a view showing the reaction specificity of a Saccharomyces pastorianus detection primer set (LGM1LB1) to a species to be detected.
- the strains used are as follows. Saccharomyces 'cerevisiae NBRC10217, Saccharomyces' Bayanus NBRC11022, Saccharomyces 'Pastorianus NBRC11024, NBRC11023, NBRC10610, Saccharomyces' cerevisia diaceticus DSM70487, Saccharomyces paradoxus NBRC10609, NBRC10609 Saccharomyces ecidas NBRC1128, Saccharomyces cervus NBRC1838, Saccharomyces sporus NBRC0316, Saccharomyces direnensis NBRC0211, Saccharomyces tanoreiberi NBRC1685, Nega: No genomic DNA added.
- FIG. 2 is a graph showing an approximate curve of the number of colonies formed by Saccharomyces pastorianus and the LAMP detection time using LGM1LB1.
- the detection time (Threshold time) on the horizontal axis indicates the reaction time when the turbidity exceeds 0.1.
- FIG. 3 is a diagram showing the reaction specificity of the Saccharomyces genus detection primer set (SSC1LB1) to the species to be detected.
- the strains used are as follows. Saccharomyces cereviche NBRC10217, Saccharomyces sanonu NBRC11022, Saccharomyces snoanu NBRC11024, NBRC11023, NBRC10610, Saccharomyces' Cerapises NBRC1815, Saccharomyces' NBRC1815, Saccharomyces' NBRC1815 Sporarus NBRC0316, Saccharomyces 'Dilerensis NBRC0211, Saccharomyces' Kluyberg NBRC1685, Nega: Caro without genomic DNA.
- FIG. 4 is a view showing the reaction specificity of the bottom fermenting yeast detection primer set (SBFY1LF1LB1) to the species to be detected.
- the strains used are as follows. Saccharomyces 'cerevisiae NBRC10217, Saccharomyces' bayanus NBRC11022, Saccharomyces 'pastori anus NBRC11024, NBRC11023, NBRC10610, Saccharomyces' Kudriavzevi NBRC 1802, Saccharomyces' Excidus NBRC1128, Saccharomyces' Selvazy NBRC1838, Saccharomyces' sporus NBRC0316, Saccharomyces' Direnensis NBRC0211, Saccharomyces' Kryberi NBRC1685, Nega: Genome None
- the LAMP primer set according to the present invention comprises four types of primers, FIP, F3, BIP, and B3, which correspond to six regions of the target nucleotide sequence.
- the regions F3c, F2c, Flc, Bl, B2, and B3 are defined in order from the 3 ′ end to the 5 ′ end, respectively.
- the regions complementary to the F3c, F2c, and Flc regions are F3, F2, and F1, respectively
- the regions complementary to the Bl, B2, and B3 regions are Blc, B2c, and B3c, respectively.
- FIP is a primer prepared so as to have an F2 region complementary to the F2c region of the target sequence on the 3 'end side and the same sequence as the Flc region of the target gene on the 5' end side. necessary If this is the case, a restriction enzyme site can be introduced between Flc and F2 of the FIP primer.
- F3 is a primer prepared to have an F3 region complementary to the F3c region of the target gene.
- BIP is a primer prepared so as to have a B2 region complementary to the B2c region of the target sequence on the 3 'end side and the same sequence as the Blc region of the target gene on the 5' end side. If necessary, a restriction enzyme site can be introduced between Blc and B2 of the BIP primer.
- B3 is a primer made to have a B3 region complementary to the B3c region of the target gene.
- the amplified product can be observed as one band after electrophoresis by treating the amplification product with the restriction enzyme after the nucleic acid amplification reaction by the LAMP method. In this case, if the target sequence has a restriction enzyme site, it is not necessary to introduce the restriction enzyme site into the primer artificially.
- one or two loop primers may be added in order to accelerate the nucleic acid amplification reaction.
- loop primers are designed to anneal to the region between F1 and F2, or between B1 and B2, and used in addition to the LAMP reaction system, these primers are used in the nucleic acid amplification process.
- the nucleic acid reaction proceeds starting from all the loop portions, and the nucleic acid amplification reaction is accelerated (see, for example, JP-A-2002-345499).
- the polynucleotide represented by the nucleotide sequence of SEQ ID NOs: 1 to 4, or the LAMP method primer set having homologous polynucleotide power thereof It further comprises, as a loop primer, a polynucleotide (LB) represented by the nucleotide sequence of SEQ ID NO: 5 or a polynucleotide of at least 10 nucleotides that hybridizes to the polynucleotide represented by the complementary sequence of the nucleotide sequence. Also good.
- LB polynucleotide represented by the nucleotide sequence of SEQ ID NO: 5
- a polynucleotide of at least 10 nucleotides that hybridizes to the polynucleotide represented by the complementary sequence of the nucleotide sequence.
- the LAMP method primer set of the second aspect includes at least 10 bases that are neutralized to the polynucleotide (LF) represented by the base sequence of SEQ ID NO: 11 or the polynucleotide represented by the complementary sequence of the base sequence.
- a polynucleotide represented by the nucleotide sequence of SEQ ID NO: 12 or a polynucleotide represented by a complementary sequence of the nucleotide sequence Either or both of at least 10 base polynucleotides that hybridize to the leotide may be further included as a loop primer.
- the LAMP method primer set of the third aspect includes at least 10 bases that hybridize to the polynucleotide (LB) represented by the base sequence of SEQ ID NO: 17 or the polynucleotide represented by the complementary sequence of the base sequence. These polynucleotides may further be included as a loop primer.
- polynucleotides represented by the nucleotide sequences of SEQ ID NOs: 1 to 5 and 7 to 30 but also polynucleotides represented by complementary sequences of the nucleotide sequences of SEQ ID NOs: 1 to 5 and 7 to 30
- Polynucleotides that hybridize to also be used as primers and probes.
- the polynucleotide represented by at least 10 bases that hybridizes to the polynucleotide represented by the base sequence of SEQ ID NO: 6 and the polynucleotide represented by the complementary sequence of the base sequence of SEQ ID NO: 6
- a hybridizing polynucleotide of at least 10 bases can be used as a LAMP primer, a PCR primer, and a probe.
- “noblybize” means to hybridize to a target polynucleotide and not to substantially hybridize to a polynucleotide other than the target polynucleotide. Nobbridations can be performed under stringent conditions.
- the “stringent conditions” can be determined depending on the Tm (° C) of the duplex between the primer sequence and its complementary strand, the required salt concentration, etc. It is well known to those skilled in the art to set stringent conditions using fcO (see column f, see J. bambrook, EF Fnsch, T. Maniatis; Molecular Cloning 2nd edition. Cold Spring Harbor Laboratory (1989)).
- Stringent conditions include a temperature slightly below the Tm determined by the nucleotide sequence (eg, 0 to about 5 ° C below the Tm) in an appropriate buffer normally used for hybridization. ) In this case, it is possible to carry out an hybridization reaction. Stringent conditions also include performing washing after the hybridization reaction with a high-concentration low-salt solution. Examples of stringent conditions include: 6 X SSCZ 0. 05% sodium pyrophosphate solution, 37 ° C (for about 14 base oligonucleotides), 48 ° C (about 17 salts 55 ° C (for oligonucleotides of about 20 bases),
- a wash condition of 60 ° C (for oligonucleotides of about 23 bases) is included.
- the nucleotide length of the homologous polynucleotide is at least 10 bases.
- the nucleotide length of FIP and BIP homologous polynucleotides is preferably at least 30 bases (eg, 30 to 60 bases), more preferably at least 4 bases.
- It can be 2 bases (for example, 42 to 57 bases).
- nucleotide length of the homologous polynucleotides of F3, B3, LF, and LB is preferably at least 12 bases (for example, 12 to 30 bases), more preferably at least 18 bases (for example, 18 to 25 bases and 18-30 bases).
- the nucleotide length of the homologous polynucleotide of the polynucleotide represented by the nucleotide sequence of SEQ ID NOs: 23 to 30 is preferably at least 15 bases (for example, 1
- 0 base particularly preferably at least 20 bases (for example, 20-25 bases and 20-30 bases).
- Each homologous polynucleotide is a polynucleotide comprising at least 10, preferably at least 15, more preferably at least 18, particularly preferably at least 20 nucleotides in a corresponding base sequence. Can be.
- Examples of the homologous polynucleotides of the polynucleotides represented by the nucleotide sequences of SEQ ID NOs: 1 to 5 and 7 to 30 are as follows.
- ⁇ FIP homologous polynucleotide represented by the nucleotide sequence of SEQ ID NO: 1: at least 42 (42 to 52) consecutive of SEQ ID NO: 1, more preferably at least 47 (47 to 52)
- a polynucleotide (nucleotide length may be up to 60 bases, preferably up to 57 bases), comprising a nucleotide (if one or several mutations may be introduced).
- BIP homologous polynucleotide represented by the nucleotide sequence of SEQ ID NO: 3: at least 36 (36 to 42) consecutive of SEQ ID NO: 3, more preferably at least 38 (38 to 42)
- a polynucleotide (nucleotide length is 60 bases at a maximum, preferably 53 bases at a maximum, more preferably 47 bases at a maximum). can do).
- ⁇ B3 homologous polynucleotide represented by the nucleotide sequence of SEQ ID NO: 4: at least 19 consecutive (19-23) of SEQ ID NO: 4, more preferably at least 21 (21-23)
- a polynucleotide (nucleotide length may be up to 30 bases, preferably up to 25 bases) comprising a nucleotide (which may have one or several mutations introduced).
- ⁇ LB homologous polynucleotide represented by the nucleotide sequence of SEQ ID NO: 5: at least 18 (18-22) contiguous in SEQ ID NO: 5, more preferably at least 20 (20-22)
- a polynucleotide (nucleotide length may be up to 30 bases, preferably up to 25 bases) comprising a nucleotide (which may have one or several mutations introduced).
- ⁇ FIP homologous polynucleotide represented by the nucleotide sequence of SEQ ID NO: 7: at least 38 consecutive (38-47) of SEQ ID NO: 7, more preferably at least 42 (42-47)
- a polynucleotide (nucleotide length may be up to 60 bases, preferably up to 53 bases), which may comprise one or several mutations.
- a polynucleotide (nucleotide length is at most 30 bases, preferably at most 25 bases, more preferably at most 23 bases), comprising a nucleotide (if one or several mutations may be introduced) can do).
- ⁇ BIP homologous polynucleotide represented by the nucleotide sequence of SEQ ID NO: 9: at least 42 (42-57) contiguous in SEQ ID NO: 9, more preferably at least 47 (47-57) Particularly preferably comprising at least 51 (51-57), most preferably at least 53 (53-57) nucleotides (one or several mutations may be introduced). (Nucleotides can be up to 60 bases in length).
- ⁇ LF homologous polynucleotide represented by the nucleotide sequence of SEQ ID NO: 11: at least 19 (19-25) contiguous of SEQ ID NO: 11, more preferably at least 22 (22-25)
- ⁇ LB homologous polynucleotide represented by the nucleotide sequence of SEQ ID NO: 12: at least 19 (19-25) consecutive of SEQ ID NO: 12, more preferably at least 22 (22-25)
- ⁇ FIP homologous polynucleotide represented by the nucleotide sequence of SEQ ID NO: 13: at least 42 (42-53) consecutive in SEQ ID NO: 12, more preferably at least 48 (48-53)
- ⁇ F3 homologous polynucleotide represented by the nucleotide sequence of SEQ ID NO: 14: at least 18 (18-21) consecutive of SEQ ID NO: 13, more preferably at least 19 (19-21)
- ⁇ BIP homologous polynucleotide represented by the nucleotide sequence of SEQ ID NO: 15: at least 37 (37-44) consecutive of SEQ ID NO: 14, more preferably at least 42 (42-44)
- a polynucleotide (nucleotide length is 60 bases at maximum, preferably 53 bases, more preferably 47 bases at the maximum). be able to).
- ⁇ B3 homologous polynucleotide represented by the nucleotide sequence of SEQ ID NO: 16: at least 19 consecutive (19-25) of SEQ ID NO: 15, more preferably at least 22 (22-25) Nuku A polynucleotide comprising a leotide (which may have one or several mutations introduced) (nucleotide length can be up to 30 bases).
- ⁇ LB homologous polynucleotide represented by the nucleotide sequence of SEQ ID NO: 17: at least 14 (14-18) contiguous of SEQ ID NO: 16, more preferably at least 16 (16-18)
- ⁇ FIP homologous polynucleotide represented by the nucleotide sequence of SEQ ID NO: 18: at least 38 (38 to 47) consecutive of SEQ ID NO: 18, more preferably at least 42 (42 to 47)
- a polynucleotide comprising a nucleotide (with or without one or several mutations introduced) (nucleotide length can be up to 60 bases, preferably up to 53 bases)
- ⁇ F3 homologous polynucleotide represented by the nucleotide sequence of SEQ ID NO: 19: at least 18 (18-20) contiguous of SEQ ID NO: 19, more preferably at least 19 (19-20)
- BIP homologous polynucleotide represented by the nucleotide sequence of SEQ ID NO: 20: at least 36 (36 to 42) consecutive of SEQ ID NO: 20, more preferably at least 38 (38 to 42)
- a polynucleotide (nucleotide length is 60 bases at maximum, preferably 53 bases, more preferably 47 bases at the maximum). be able to).
- ⁇ B3 homologous polynucleotide represented by SEQ ID NO: 21 base sequence: at least 18 (18-20) contiguous in SEQ ID NO: 21, more preferably at least 19 (19-20)
- the length can be up to 30 bases, preferably up to 25 bases, more preferably up to 22 bases).
- nucleotide length can be up to 30 bases, preferably up to 25 bases).
- nucleotide length can be up to 30 bases, preferably up to 25 bases).
- Nucleotides (which may have one or several mutations introduced) (nucleotide length can be up to 30 bases, preferably up to 25 bases).
- Each of the 10-base polynucleotides comprises a polynucleotide comprising at least 10 consecutive nucleotides of the complementary sequence of the base sequence of SEQ ID NO: 6, and at least 10 consecutive base sequences of the sequence number 6 It can be a polynucleotide comprising a nucleotide.
- the polynucleotide prepared based on the nucleotide sequence of SEQ ID NO: 6 is used as a primer for LAMP method (FIP and BIP)
- at least 42 of the nucleotide sequence of SEQ ID NO: 6 or its complementary sequence is continuous.
- a polynucleotide comprising nucleotides (for example, 42 to 57 bases) of nucleotides (one or several mutations may be introduced) (nucleotide length is 60 bases at maximum, preferably 57 bases) Can be used as primers.
- nucleotide sequence of SEQ ID NO: 6 is used as a LAMP primer (F3, B3, LB, and LF)
- the nucleotide sequence of SEQ ID NO: 6 or its complementary sequence A polynucleotide comprising at least 18 contiguous nucleotides (eg, 18-25 nucleotides, one or several mutations may be introduced) (nucleotide length is at most 30 bases, preferably Can be up to 25 bases).
- the polynucleotide prepared based on the nucleotide sequence of SEQ ID NO: 6 is used as a PCR method primer, at least 15 consecutive nucleotide sequences of SEQ ID NO: 6 or its complementary sequence (for example, 15-30), more preferably at least 18 (eg 18-24 and 18-30), particularly preferably at least 20 (eg 20-25 and 20-30) nucleotides
- a polynucleotide comprising a nucleotide length of at most 30 bases, preferably at most 25 bases, more preferably at most 24 bases. can be used as primers.
- a PCR method primer pair for detecting Saccharomyces pastorianus can be selected. Specifically, in the PCR method, one of two primers is paired with the base sequence of SEQ ID NO: 6, the other primer is paired with a complementary sequence of the base sequence of SEQ ID NO: 6, and one primer is used. The primer can be selected such that the other primer is paired with the extended strand.
- a LAMP method primer set for detecting Saccharomyces pastorinus can be selected based on the polynucleotide represented by the nucleotide sequence of SEQ ID NO: 6.
- the four types of primers necessary to perform the LAMP method namely FIP, F3, BIP, and B3, are designed as described above, and loop primers, ie, LF and LB, are used as necessary.
- loop primers ie, LF and LB
- the polynucleotide produced based on the homologous polynucleotide and the nucleotide sequence of SEQ ID NO: 6 is also a polynucleotide having at least 90%, preferably at least 95% identity with the corresponding nucleotide sequence, respectively. be able to.
- the identity number can be calculated according to algorithms well known in the art, for example, BLAST (http: //www.ddbj.nig.ac.jp/search/blast-j.html) can be used to calculate identity values.
- the polynucleotide prepared based on the homologous polynucleotide and the nucleotide sequence of SEQ ID NO: 6 further comprises a modified nucleotide sequence in which one or several mutations are introduced into the corresponding nucleotide sequence, and It can be a polynucleotide that hybridizes to a polynucleotide represented by a complementary sequence of the corresponding base sequence.
- the "mutation” can be selected from substitution, deletion, insertion, and addition, which may be the same or different, and preferably one base is replaced with another base. “Single base substitution”, “Single base deletion” to delete one base, “One base insertion” to insert one base, and “Single base addition” to add one base You can also choose the power.
- the number of mutations can be 1-6, 1, 2, 3, or 4, 1 or 2, or 1.
- polynucleotide is used to mean DNA, RNA, and PNA (peptide nucleic acid).
- the polynucleotide constituting the primer set according to the present invention is a nucleic acid chemistry according to a conventional method such as the phosphite 'triester method (Hunkapiller, M. et al., Nature, 310, 105, 1984). It may be prepared by synthesis, or the total DNA of the strain to be detected is obtained, and a DNA fragment containing the desired nucleotide sequence is appropriately obtained by PCR or the like based on the nucleotide sequence disclosed in this specification. You can do it.
- a specific embodiment of the detection method according to the present invention is a detection method including a step of detecting the presence or absence of a nucleic acid amplification product after performing a nucleic acid amplification reaction by a LAMP method on a nucleic acid sample. It is done. More specifically, it is as follows.
- a method of detecting Saccharomyces pastorinus is provided, wherein the production of amplification product indicates the presence of Saccharomyces pastorianus.
- a method for detecting Saccharomyces cerevisiae wherein the production of amplification products indicates the presence of Saccharomyces cerevisiae.
- the nucleic acid may be extracted after culturing the microbial cells in the sample or without culturing.
- the preparation of nucleic acid samples such as cell culture and nucleic acid extraction will be described later.
- nucleic acid amplification step by the LAMP method an amplification reaction is performed on the nucleic acid in the sample.
- the nucleic acid amplification reaction by the LAMP method will be described later.
- the species to be detected is present in the sample, a specific target region is amplified and an amplification product is generated.
- an amplification product is generated, the sample solution subjected to the nucleic acid amplification reaction becomes white turbid, and therefore the presence or absence of the amplification product can be determined by measuring the turbidity of the sample solution.
- the turbidity measurement in the LAMP method is well known, and turbidity is measured using a commercially available end-point turbidity measurement device (for example, LA-100 manufactured by Terramettas) or a real-time turbidity measurement device (for example, LA-200 manufactured by Terramettas). You can measure the degree.
- the number of cells in the test sample can be determined by measuring the time until the sample solution reaches a certain turbidity. That is, according to another aspect of the detection method according to the present invention, the nucleic acid amplification reaction is performed on the nucleic acid sample by the LAMP method, and the starting power of the nucleic acid amplification reaction until the sample reaches a certain turbidity. Saccharomyces, including the process of measuring time and determining the number of cells in the sample from that time Methods for the quantification of Pastorianus, Saccharomyces cereviche, and Saccharomyces bayans are provided. Specifically, it is as follows.
- a method for quantifying Saccharomyces pastorianus comprising:
- a method for quantifying Saccharomyces cerevisiae comprising:
- a method for quantifying Saccharomyces bayanus comprising:
- a calibration curve between the number of bacterial cells and the time to reach a certain turbidity is prepared in advance, and the bacteria in the specimen are measured from the measured time based on the calibration curve.
- the number of bodies can be obtained.
- a calibration curve is prepared by preparing samples in which bacterial cells are diluted in stages, and performing a nucleic acid amplification method using the LAMP method for each sample. Plot the time until the degree reaches 0.1 It can be created from what you do.
- a loop primer (LF and Z or LB) is added to a primer set consisting of FIP, F3, BIP, and B3, and a nucleic acid amplification reaction by the LAMP method. May be implemented.
- the LAMP method primer set comprising the polynucleotide represented by the nucleotide sequences of SEQ ID NOs: 1 to 4 or homologous polynucleotides thereof.
- a polynucleotide represented by the nucleotide sequence of SEQ ID NO: 5 or a homologous polynucleotide thereof may be added and used as a loop primer.
- the polynucleotide represented by the nucleotide sequence of SEQ ID NO: 11 or a homologous polynucleotide thereof and the polynucleotide represented by the nucleotide sequence of SEQ ID NO: 12 are used. Both nucleotides and / or homologous polynucleotides! / May be added and used as loop primers.
- a polynucleotide represented by the nucleotide sequence of SEQ ID NO: 17 or a homologous polynucleotide thereof is added and used as a loop primer. It's good.
- the LAMP method primer set according to the present invention may be used alone or in appropriate combination. By carrying out a combination of the primer sets according to the present invention, it is possible to more accurately distinguish and detect Saccharomyces' nostrianus, Saccharomyces' cerevisiae, and Saccharomyces' bayanus.
- the LAMP method primer set according to the present invention can be provided alone or in combination in the form of a kit. Therefore, according to the present invention, the LAM P method primer set of the first aspect; the LAMP method primer set of the second aspect; the LAM P method primer set of the third aspect; A detection kit for Saccharomyces yeasts is provided, comprising a selected primer set.
- the kit according to the present invention including the LAMP primer set includes a reagent (for example, Bst DNA polymerase, a reaction reagent mixture) and an instrument (for example, a reaction tube) necessary for performing a nucleic acid amplification reaction by the LAMP method.
- a kit according to the present invention including a PCR primer set includes reagents (for example, DNA polymerase, purified water) and instruments (for example, reaction tubes) necessary for carrying out a nucleic acid amplification reaction by PCR! / Hey! /.
- the LAMP primer set of the first aspect according to the present invention targets the Lg-type MET16 gene and is not homogeneous in its genomic structure! /, And may react with Saccharomyces bayanus.
- the LAMP method primer set of the third aspect according to the present invention is not present in Saccharomyces cerevisiae Saccharomyces pastorianus, but targets the RAD18 homologous gene of Saccharomyces bayanus and has a high Saccharomyces bayanus. It can be detected with accuracy.
- the LAMP method primer set according to the first aspect of the present invention and the LAMP method primer set used for detection of Saccharomyces bayanus preferably, the third In combination with the LAMP method primer set of the above embodiment.
- the LAMP primer set of the first aspect according to the present invention and the LAMP primer set for detecting Saccharomyces bayanus or in the LAMP primer set of the first aspect. If no amplification reaction is observed and an amplification reaction is observed in the LAMP primer set for detecting Saccharomyces banus, it can be determined that Saccharomyces banus exists in the sample.
- Saccharomyces pastorianus is present in the sample. It can be determined.
- the LAMP method primer set according to the first aspect of the present invention and the LAMP method primer set used for the detection of Saccharomyces 'Bayanus are combined, and the Saccharomyces' Pastrianus is combined.
- a detection kit is provided.
- a nucleic acid amplification reaction is performed by the LAMP method using the LAMP method primer set used for the detection of Saccharomyces' Bajanus. It may further include a step of performing. This step may include a step of performing a nucleic acid amplification reaction by a LAMP method on a nucleic acid sample and a step of detecting the presence or absence of a nucleic acid amplification product.
- the LAMP method primer set used for detection of Saccharomyces bayanus is preferably the LAMP method primer set according to the third aspect of the present invention.
- the LAMP method primer set of the first aspect according to the present invention is also used.
- U preferred to use in combination with LAMP primer sets that can detect Celebici and Saccharomyces' Pastorianus.
- the LAMP primer for Saccharomyces' Pastorianus according to the first aspect of the present invention has a uniform genome structure and may cross-react with Saccharomyces bayanus.
- the LAMP primer set for detection of Saccharomyces cerevisiae and Saccharomyces' Pastorianus reacts with the Saccharomyces cerevisiae genome sequence contained in Saccharomyces pastorianus.
- the LA MP primer set for detecting Saccharomyces cerevisiae and Saccharomyces s. Pastorianus does not react with Saccharomyces s. In this case, if an amplification reaction was observed in both the L.A. primer set for detecting Saccharomyces 'Pastorinus according to the present invention, and the LAMP method primer set for detecting Saccharomyces cerevisiae and Saccharomyces' Pastorianus, the S. It can be determined that Pastorian exists.
- the Saccharomyces' Bayanus in the sample is used. Can be determined to exist.
- the LAMP method primer set according to the first aspect of the present invention is combined with the LAMP method primer set used for the detection of Saccharomyces cerevisiae and Saccharomyces pastorianus.
- a kit for detection of Saccharomyces pastorianus is provided.
- the LAMP method is used by using the LAMP method primer set used for the detection of Saccharomyces' cereviche and Saccharomyces' Pastorianus.
- a step of performing a nucleic acid amplification reaction may be further included. This process is applied to the LAMP method for nucleic acid samples. And a step of performing a nucleic acid amplification reaction and a step of detecting the presence or absence of a nucleic acid amplification product.
- the LAMP method primer set used for detection of Saccharomyces cerevisiae and Saccharomyces' Pastorianus is preferably a LAMP method primer set comprising the following polynucleotides.
- the LAMP method primer set for detection of Saccharomyces 'selepiche and Saccharomyces' Pastorianus described above is represented by a polynucleotide (LB) represented by the nucleotide sequence of SEQ ID NO: 22 or a complementary sequence of the nucleotide sequence as a loop primer. It may further comprise a polynucleotide of at least 10 bases that hybridizes to the polynucleotide to be prepared.
- LB polynucleotide
- a specific embodiment of the detection method by PCR includes a step of detecting the presence or absence of a nucleic acid amplification product after performing a nucleic acid amplification reaction by PCR on a nucleic acid sample. Including detection methods.
- a method of detecting Saccharomyces pastorinus is provided, wherein the production of amplification product indicates the presence of Saccharomyces pastorianus.
- the sample to be subjected to the nucleic acid amplification step by PCR may be extracted after culturing the cells in the sample or without culturing.
- the preparation of nucleic acid samples such as cell culture and nucleic acid extraction will be described later.
- nucleic acid amplification step by the PCR method an amplification reaction is performed on the nucleic acid in the sample.
- Nucleic acid amplification reactions by the PCR method are well known, and those skilled in the art can implement the PCR method by appropriately setting conditions for performing the PCR method and its modification method.
- a specific embodiment of the detection method using a probe includes a step of detecting the presence or absence of a nucleic acid complex after carrying out hybridization of the probe according to the present invention to a nucleic acid sample.
- the detection method containing is mentioned.
- a method of detecting Saccharomyces pastorinus is provided, wherein the formation of a hybridization complex indicates the presence of Saccharomyces pastorinus.
- the probe can be labeled and used.
- the label include radioactive elements (for example, 32 P and 14 C), fluorescent compounds (for example, FITC), and molecules involved in enzyme reactions (for example, peroxidase, alkaline phosphatase).
- Detection of the hybridization complex can be carried out using a known method such as Northern hybridization, Southern hybridization, or colony hybridization.
- primer sets and kits according to the present invention are suitable for liquors (eg, beer Can be used for quality control of Z, soft drinks (for example, fruit juice drinks) and environmental samples (for example, raw water).
- liquors eg, beer Can be used for quality control of Z
- soft drinks for example, fruit juice drinks
- environmental samples for example, raw water
- Saccharomyces' Pastorianus, Saccharomyces' Celepische, and Saccharomyces' Banus may be found in the beer and happoshu production process or in the final product as the cause of the degradation fermentation. Therefore, the LAMP method primer set and the PCR method primer set of the first aspect; the LAMP method primer set of the second aspect; the LAMP method primer set and the PCR method primer set of the third aspect; the PCR method of the fourth aspect The primer set; and some or all of these combinations can preferably be used for quality control of beer and happoshu.
- Saccharomyces' cerepiche 'and Saccharomyces' bayanus may be found in the wine production process or in the final product as yeast species causing quality degradation. Therefore, the LAMP method primer set of the second aspect; the LAMP method primer set of the third aspect; and combinations thereof can be preferably used for wine quality control.
- Saccharomyces' cerepiche 'and Saccharomyces' bayanus are in the process of producing soft drinks (especially fruit juice drinks)! May be seen in the final product as yeast species causing quality degradation. Therefore, the LAMP method primer set of the second aspect; the LAMP method primer set of the third aspect; and combinations thereof can be preferably used for quality control of soft drinks (especially juice drinks).
- the LAMP method primer set according to the present invention can be used as a primer for nucleic acid amplification reaction by the LAMP method.
- the primer set according to the present invention can be used not only as a LAMP method but also as a primer for a nucleic acid amplification reaction obtained by improving the LAMP method.
- the principle of the LAMP method and a nucleic acid amplification method using the LAMP method are well known. For example, WO00Z28082 and Notomi T. et al., Nucleic Acids Research, 28 (12 ), e63 (2000).
- Nucleic acid amplification reaction by the LAMP method can be carried out using a commercially available LAMP method gene amplification reagent kit.
- a commercially available LAMP method gene amplification reagent kit for example, sample DNA, primer solution, and commercially available LAMP method gene amplification reagent kit (for example, Loopamp DNA amplification kit manufactured by Eiken Chemical Co., Ltd.
- the reagent provided in step (b) is mixed according to the instructions provided with the kit and mixed at a constant temperature (
- the reaction can be carried out by maintaining the temperature at 60 to 65 ° C for a certain period of time (1 hour as a standard).
- the nucleic acid amplification reaction by the LAMP method can be carried out through the following steps.
- the strand-displacing DNA polymerase synthesizes a DNA strand complementary to the truncated DNA starting from the 3 'end of the F2 region of FIP.
- (V) BIP anneals to the DNA strand that formed a loop in the process of (iv) above, and complementary DNA is synthesized starting from the 3 'end of this BIP. In this process, the loop is peeled off and stretched.
- the B3 primer anneals outside the BIP, and DNA synthesis extends while peeling the DNA strand from the previously synthesized BIP by the action of the strand-displacement DNA polymerase starting from its 3 'end.
- Double-stranded DNA is formed in the process of (V) above.
- nucleic acid amplification reaction by the LAMP method can be carried out by appropriately modifying the above steps.
- the primer set according to the present invention can also be used for such a modified method!
- the LAMP primer set according to the present invention causes DNA strand synthesis at the same time as annealing at about 60 to about 65 ° C (eg, 65 ° C). By performing the reaction for about 1 hour by annealing reaction and DNA strand synthesis, the nucleic acid can be amplified 10 9 to 10 1G times. [0145] When the LAMP method primer set according to the present invention is reacted with a sample nucleic acid under the conditions of a nucleic acid amplification reaction by the LAMP method, the target region of the strain to be detected is amplified.
- the reaction solution becomes cloudy due to the influence of magnesium pyrophosphate formed as a by-product, and therefore the presence or absence of amplification can be visually determined based on this turbidity.
- the presence or absence of amplification may be optically measured using a turbidity measuring device, or may be detected by detecting the presence or absence of a DNA fragment using agarose gel electrophoresis or the like.
- nucleic acid amplification If nucleic acid amplification is observed, it means that the target base sequence is present, and represents positive (+) for the species to be detected by the primer set. On the other hand, when nucleic acid amplification is not observed, it means that the target base sequence is not present, and it represents negative (-) for the species to be detected by the primer set.
- the PCR method primer set according to the present invention can be used for identification of Saccharomyces yeasts using nucleic acid amplification methods such as PCR, RT-PCR, real-time PCR, and in situ PCR.
- nucleic acid amplification product If a nucleic acid amplification product is observed, it means that the target nucleotide sequence is present, and represents a positive (+) species of bacteria to be detected in the primer set. On the contrary, when nucleic acid amplification is not observed, it means that the target base sequence is not present and represents a negative bacterial species (-) which is the detection target of the primer set.
- a nucleic acid amplification product in the PCR method, can be detected according to a known method such as agarose gel electrophoresis.
- a known method such as agarose gel electrophoresis.
- nucleic acid amplification products can be detected over time in an apparatus in which a thermal cycler and a spectrofluorometer are integrated using an intercalator or a fluorescently labeled probe.
- Samples to be detected by the primer set and kit according to the present invention include beer, sparkling liquor, wine and other alcoholic beverages; soft drinks such as cider, ramune and carbonated water; environmental samples such as water collected for raw materials ; Semi-finished products collected from the manufacturing process of alcoholic beverages and soft drinks.
- nucleic acids present in beverage samples and environmental samples for example, a method using a commercially available kit, or treating bacterial cells with an alkaline solution, etc. A method for liberating nucleic acids from bacterial cells by heating at ° C can be selected. If it is necessary to further purify the nucleic acid, the nucleic acid is purified by treatment with phenol Z chloroform, ethanol precipitation, centrifugation, etc., and finally re-dissolved in TE buffer or the like for testing as vertical DNA.
- European Brewery Convention ANALYTICA-MICROBIOLOGICA-EBC, 2nd ed.
- Saccharomyces yeast considered to be present in the sample is cultivated in an appropriate medium.
- DNA is isolated from the colonies formed on the agar medium, and the LAMP method or PCR method using the primer set according to the present invention is performed on the DNA to amplify a specific gene region of Saccharomyces yeast.
- the presence of the gene amplification product indicates the presence of the bacterial species targeted by the primer set.
- the cells cultured on the agar plate medium were scraped and suspended in sterilized distilled water. This suspension was centrifuged (15000 rpm, 5 minutes), and the supernatant was discarded. Sterile distilled water was again added to the precipitated cells, suspended, and centrifuged. The supernatant was discarded, and PrepMan Ultra (Applied Biosystems) solution 1001 was added to the resulting cells and heated at 95 ° C. for 10 minutes. Thereafter, the mixture was centrifuged at 15000 rpm for 1 minute, and the supernatant was used as a genomic DNA solution. Alternatively, 0.11 NaOH solution was added to the washed cells and heated at 95 ° C for 10 minutes. Thereafter, the solution was neutralized with 1M Tris buffer (pH 7.0), and the supernatant was used as a genomic DNA solution.
- 1M Tris buffer pH 7.0
- the following primers for each strain of Saccharomyces yeast are chemically synthesized by Fujitsu System Solutions' eGenome Order (http://genome.e-mp.jp/index.html) or equivalent method, and TE buffer
- the solution (pH 8.0) was dissolved to a concentration of 100 M.
- FIP, BIP primer: 16 M, F3, B3 primer: 2 M, LF, LB primer: 8 ⁇ were mixed and diluted with these solutions.
- GCTCGAACG (SEQ ID NO: 9) ⁇ 3: GTTGTATGGTACATTGTTTGCATCT (SEQ ID NO: 10) LF: CACTTATATGTAGCTCTTTGTAGGC (SEQ ID NO: 11)
- a Loopamp DNA amplification kit manufactured by Eiken Chemical Co., Ltd. was used as a gene amplification reagent kit for the LAMP method.
- genomic DNA solution: 2.51 primer solution: 2.51
- double concentration reaction buffer: 12.51 primer solution: 2.51
- Bst DNA polymerase 1 ⁇ 1
- sterile water 6.5 1 was added to prepare a reaction solution having a total volume of 25 ⁇ 1.
- the turbidity change during the reaction was measured every 6 seconds. Positive with increased turbidity A negative turbidity was determined as negative.
- Saccharomyces cerevisiae standard strains containing Saccharomvces sensu stricto strain-specific primers prepared for bottom fermentation yeast Saccharomyces cerepiche and Saccharomyces bayanus Sex was evaluated.
- SBR2LB1 was used for Saccharomyces cerevisiae var.
- Diastaticus for Saccharomyces cerevisiae var.
- SCC1LB1 saccharomyces cerevisiae and Saccharomyces pastels (bottom fermenting yeast) showed an increase in turbidity due to DNA amplification within 60 minutes (Table 1).
- the primer was reacted with the strain to be detected, amplification occurred within 60 minutes of reaction initiation, and the turbidity in the reaction tube increased (Fig. 1).
- Kluyveromyces I act is NBRC1090-
- Candida uti I is NBRC0988
- D. bruxel I ens is DSM70001 ⁇ One---
- the primer set according to the present invention prepared for each strain of Saccharomyces yeast can accurately detect the Saccharomyces yeast to be tested at the strain level.
- yeast power gene fragments were amplified using a common primer, and then the base sequence difference V was often analyzed using a restriction enzyme cleavage pattern, DGGE, etc. These three Saccharomyces yeasts can be identified and detected simply by confirming the presence or absence of gene amplification.
- the cells of bottom fermenting yeast (BFY70, Saccharomyces' Pastorianus), Saccharomyces' Cereviche NBRC10217, Saccharomyces' Bayanus NBRC 1948 cultured in an agar plate medium with sterilized water in stages
- the DNA was extracted by the method described above after dilution and subjected to the LAMP method.
- amplification was observed even from a small amount of cells having a level of 10 2 to 10 3 cfu.
- the detection time is defined as the time when the turbidity exceeded 0.1 in the LAMP reaction, and the logarithm of the detection time of each primer and the number of colonies formed.
- R 2 0.98-0.99
- the approximate curve obtained for LGM1LB1 is shown in FIG.
- the relationship between the detection limit of each primer and the correlation coefficient of the calibration curve is as shown below.
- Example 3 Detection from wine and beer
- Saccharomyces yeast a wine yeast
- Saccharomyces bayanus NBRC 1948 the number of yeasts contaminated from the outside is far smaller than that of Saccharomyces yeasts. Therefore, a large amount of Saccharomyces cereviche was suspended in wine, diluted with Saccharomyces bayanus NBRC 1948, mixed and washed, collected and then extracted as a primer set.
- the LAMP method was performed using SBR2LB1 to examine whether Saccharomyces bayanus can be detected.
- Saccharomyces bayanus can be detected with almost the same detection limit as when suspended in sterilized water, which is related to the reaction inhibition by wine and the presence of Saccharomyces cerevisiae.
- the same results were obtained when the bottom fermentation yeast was suspended in beer and Saccharomyces bayanus cell dilution was mixed.
- Beer + bottom fermenting yeast (1 X 10 7 cells) 3.2 x 10 2 cfo
- Saccharomyces genus detection primer set SSC1LB1
- bottom fermenting yeast detection primer set SBFY1LF1LB1
- WO2005Z093059 a primer solution for the LAMP method was prepared.
- the Saccharomyces detection primer set (SSC1LB1) targets the D2 region of the rRNA gene
- the bottom fermenting yeast detection primer set SBFY1LF1LB1 targets the melibiase gene.
- F3 CCGAGTTACAATGGCCTTGG (SEQ ID NO: 37) No. 38)
- SSC1LB1 reacted with most of the Saccharomyces yeasts tested and could not be distinguished among Saccharomyces yeasts.
- SBFY1LF1L B1 reacted with Saccharomyces bayanus in addition to bottom fermentation yeast.
- SBFY1LF1LB1 was designed from the melibiase gene of bottom fermenting yeast, but the region used for the design was considered to have cross-reacted due to the presence of a 96% homologous base sequence in the genome of Saccharomyces bayanus. It was.
- Example 3 Sc type - L g 3 ⁇ 4 ⁇ chromosome evaluation of PCR methods primers for puncturing the
- the Sc type XVI chromosome of the bottom fermenting yeast translocated with the Lg type chromosome in the range of the ORF of the right arm GPH1 ORF QCR2.
- the Lg type III chromosome of the bottom fermenting yeast caused a translocation with the Sc type chromosome from the MAT locus on the right arm to the end of the right arm.
- Lg type VII chromosome of bottom fermenting yeast is KEM1 gene O in the left arm. A translocation with the Sc-type chromosome occurred from within RF to the end of the left arm.
- the base sequence on the Sc-type chromosome and the base sequence on the Lg-type chromosome in the form of sandwiching the chromosomal translocation positions of chromosomes III, VII, and XVI of these bottom fermenting yeasts Primers for PCR Were designed and evaluated in various Saccharomyces yeasts.
- Illjuncl (Lg type side): TGTTGGGGTGTACTATGGTCTTT (SEQ ID NO: 23)
- VIISL1 (Lg type side): CGACTCAAACTGTATTACTCC (SEQ ID NO: 25)
- XVISL1 (Lg type side): CGACAGAGTTGACCAGTTTG (SEQ ID NO: 27)
- XVISL2 (Sc type side): GTTCTTCTTGCAAGATGTGG (SEQ ID NO: 28)
- XVISL3 (Lg type side): CCTTGGCAGATGTGTTGTAT (SEQ ID NO: 29)
- XVISL4 (Sc type side): CTTGCCCTTCTTCAAATCCG (SEQ ID NO: 30)
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US12/444,448 US20100216127A1 (en) | 2006-10-05 | 2007-05-17 | Primer set for use in detection of yeast of genus saccharomyces |
JP2008538576A JPWO2008044358A1 (ja) | 2006-10-05 | 2007-05-17 | サッカロミセス属酵母の検出用プライマーセット |
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WO2000028082A1 (fr) * | 1998-11-09 | 2000-05-18 | Eiken Kagaku Kabushiki Kaisha | Procede de synthese d'acide nucleique |
JP2001008684A (ja) * | 1999-06-25 | 2001-01-16 | Asahi Breweries Ltd | 新規オリゴヌクレオチドとそれを用いた酵母分類法 |
WO2004079008A1 (en) * | 2003-03-04 | 2004-09-16 | Suntory Limited | Screening method for genes of brewing yeast |
WO2005093059A1 (ja) * | 2004-03-25 | 2005-10-06 | Sapporo Breweries Limited | 酵母、乳酸菌及び偏性嫌気性菌検出・識別のためのプライマー及びプライマーセット並びにそれらを用いた検出・識別方法 |
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- 2007-05-17 WO PCT/JP2007/060154 patent/WO2008044358A1/ja active Application Filing
- 2007-05-17 US US12/444,448 patent/US20100216127A1/en not_active Abandoned
- 2007-05-17 RU RU2009116943/10A patent/RU2432402C2/ru not_active IP Right Cessation
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WO2020255587A1 (ja) * | 2019-06-21 | 2020-12-24 | アサヒグループホールディングス株式会社 | Dnaライブラリーの調製方法 |
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RU2009116943A (ru) | 2010-11-10 |
DE112007002345T5 (de) | 2010-12-16 |
US20100216127A1 (en) | 2010-08-26 |
JPWO2008044358A1 (ja) | 2010-02-04 |
AU2007305835A1 (en) | 2008-04-17 |
RU2432402C2 (ru) | 2011-10-27 |
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