WO2003104491A1 - イネの品種鑑別法 - Google Patents
イネの品種鑑別法 Download PDFInfo
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- WO2003104491A1 WO2003104491A1 PCT/JP2003/007332 JP0307332W WO03104491A1 WO 2003104491 A1 WO2003104491 A1 WO 2003104491A1 JP 0307332 W JP0307332 W JP 0307332W WO 03104491 A1 WO03104491 A1 WO 03104491A1
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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
- C12Q1/6895—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for detection or identification of organisms for plants, fungi or algae
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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
- C12Q2600/13—Plant traits
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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 rice cultivar discrimination method.
- Cultivation characteristics such as plant height, tillering number, heading time, brown rice and milled rice characteristics such as grain shape, grain weight and whiteness, and rice cooking characteristics such as taste have been used for rice or rice varieties identification.
- RFLP restriction fragment length polymorphism
- CAPS CAPS
- SNPs Single nucleotide polymorphisms
- SSR immediately le sequence repeat
- insertion / deletion mutations In many cases, it is no exaggeration to say that all genetic differences that can be detected with molecular markers such as RFLP and CAPS, and genetic differences that are reflected in morphology, etc., are derived from SNPs.
- SNPs research and SNPs determination systems have made remarkable progress in the last few years.
- electrophoresis is not required at all, and a determination system that can perform PCR to determination on a 96-well plate has been developed. Genotyping is much more efficient than molecular markers.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a new method capable of quickly and easily distinguishing rice varieties. More specifically, an object of the present invention is to provide an efficient rice variety discrimination method using a polymorphic marker.
- the present inventors have intensively studied to solve the above-mentioned problems.
- the rice genome sequence is used.
- the chromosome region where the rice genome base sequence information is released mainly the region where the gene is not predicted is used, and for the other regions, the sequence of the RFLP marker / probe is used.
- primers were designed to amplify 800 bp to lkbp from genomic DNA. Using the designed primers, Nipponbare Koshihikari, Kazaras, Hiroriku Dwarf 4 (G4), Kitake, and wild rice
- PCR amplification was performed using the easily extracted DNA of Oryza ruf ipogon (1943) as type I, and the result was used as type II for the sequence reaction.
- a cycle sequence was performed on this type II to prepare a sequence sample.
- the obtained sequence data was compared for each variety, and single nucleotide substitution polymorphisms were searched. Sequences were performed at least twice for the same cultivar and the same primer, and only those that were reliable were judged to be polymorphisms.
- Nipponbare / Koshihikari and Nipponbare / Kitatake polymorphisms are found in Nipponbare.Hatsusimo / Mutsuhorare / Yukinosei 'Kirara 397 ⁇ Tsugaru Roman ⁇ 5 million stones ⁇ Mori no Kuma ⁇ Yumeakari ⁇ Hanaetizen ⁇ Koshihikari 'Moonlight' Aki Takomachi ⁇ Morning light ⁇ Aichi no Kaori ⁇ Festival fine ⁇ Hinohikari ⁇ Yume Tsukushi ⁇ Hitomebore ⁇ Manamusume. Using genomic DNA as type II, PCR reaction and sequencing were similarly performed, and the base at the polymorphic site was compared for each variety.
- primers for SNPs detection were designed for SNPs useful for cultivar discrimination, and a single-base terminator reaction was performed using an AcycloPrime-FP kit (PerkinElmer) to prepare a sample for dienotyping. Dienotyping was performed by measuring the degree of fluorescence polarization with ARVO Perkin Elmer).
- the present inventors searched for SNPs in 24 cultivars with a large cultivated area in Japan and created polymorphic markers capable of easily and quickly discriminating these cultivars.
- a new rice cultivar discrimination method was completed using By using the method of the present invention, it is possible to identify and specify closely related varieties at the DNA level.
- the present invention relates to a new method capable of quickly and easily distinguishing rice varieties, more specifically,
- a method for identifying rice varieties comprising the following steps (a) and (b):
- step (b) a step of associating the base species determined in step (a) with the variety
- nucleotide at position 450 of the nucleotide sequence of SEQ ID NO: 3 is A
- nucleotide at position 16 in the nucleotide sequence of SEQ ID NO: 5 is C
- nucleotide at position 624 in the nucleotide sequence of SEQ ID NO: 6 is C.
- nucleotide at position 534 of the nucleotide sequence of SEQ ID NO: 7 is C
- nucleotide at position 358 of the nucleotide sequence set forth in SEQ ID NO: 8 is G
- SEQ ID NO: 22 The base at position 48 in the base sequence described is C.
- the nucleotide at position 92 in the nucleotide sequence described in SEQ ID NO: 26 is C
- the base at position 743 of the base sequence described in SEQ ID NO: 27 is G
- the base at position 552 in the base sequence described in SEQ ID NO: 28 is T
- step (c) a step of hybridizing the DNA synthesized in step (a) with the probe synthesized in step (b)
- step (e) a step of cleaving the DNA hybridized in step (d) with a single-stranded DNA-cleaving enzyme and releasing a part of the probe synthesized in step (b)
- step (f) a step of hybridizing the probe released in step (e) with the detection probe
- step (g) A step of enzymatically cleaving the DNA hybridized in step (f) and measuring the intensity of the fluorescence generated at that time
- step (h) comparing the fluorescence intensity measured in step (g) with the control
- step (f) comparing the fluorescence intensity measured in step (e) with a control
- step (d) In the presence of fluorescently labeled nucleotides, the DNA amplified in step (b) is transformed into a ⁇ form, and a single-base extension reaction is performed using the primer synthesized in step (c). The process of measuring
- step (f) comparing the degree of fluorescence polarization measured in step (e) with a control
- step (d) In the presence of fluorescently labeled nucleotides, the DNA amplified in step (b) is transformed into a type, and a single-base extension reaction is performed using the primer synthesized in step (c).
- step (e) Using a sequencer to determine the type of base used in the reaction in step (d)
- step (f) comparing the base species determined in step (e) with a control
- step (c) Step of measuring the molecular weight by applying the DNA amplified in step (b) to a mass spectrometer
- step (d) comparing the molecular weight measured in step (c) with the control
- step (d) contacting the DNA of step (b) with the substrate of step (c)
- step (f) comparing the intensity detected in step (e) with a control
- step (b) a step of extracting rice genomic DNA from the seed powdered in the step (a) (15) the method according to (14), wherein the seed is milled;
- An oligonucleotide for amplifying the DNA region or
- oligonucleotide for rice species identification comprising the oligonucleotide according to (16) or (17),
- the present invention provides the rice cultivar identification kit according to [18], further comprising an alkaline aqueous solvent.
- the present inventors have found polymorphic markers capable of accurately distinguishing between rice varieties by analyzing the genome sequence of 24 rice varieties.
- the DNA region containing the polymorphic site in the rice genome, which was discovered by the present inventors, is described in SEQ ID NOs: 1-28.
- the positions of the polymorphic sites are shown in FIGS. 1 to 29 and Tables 8 and 9.
- the present invention provides a method for identifying rice varieties.
- a base type is determined for a polymorphic site on a genome in rice 24 varieties found by the present inventors. More specifically, the base type according to any of the following (1) to (28) in the rice genome, or the base type of a site in a complementary chain forming a base pair with a base in the site is determined (step (A)).
- nucleotide sequence, polymorphism site, etc. shown in the present specification it is easy to properly find the actual genome position corresponding to the polymorphic site from the information on the above.
- the position on the genome of the polymorphic site of the present invention can be known by referring to a published genome database or the like.
- the genomic sequence is determined based on the nucleotide sequence listed in the sequence listing.
- the DNA in the genome usually has a double-stranded DNA structure complementary to each other. Therefore, in the present specification, even if a DNA sequence on one chain is shown for convenience, it is naturally understood that a sequence complementary to the sequence (base) is also disclosed. . For those skilled in the art, if one DNA sequence (base) is known, the sequence (base) complementary to the sequence (base) is obvious.
- polymorphism in the present invention is not limited to single nucleotide polymorphisms (SNPs) consisting of single nucleotide substitutions, deletions and insertion mutations, but also includes substitutions, deletions and insertion mutations of several consecutive nucleotides.
- the “polymorphic marker” of the present invention refers to information on a base mutation (polymorphic mutation) at a polymorphic site. More specifically, the polymorphism of the present invention refers to a mutation in a base sequence found when comparing the genome sequence of a rice cultivar “Nipponbare” with the genome sequences of other varieties. Information that can be used to identify rice varieties.
- the polymorphic marker used for the determination of a base type preferably refers to a polymorphic marker represented by the following (1,) to (28,). That is, in a preferred embodiment of the present invention, rice varieties are distinguished by using polymorphic markers represented by the following (1) to (28,).
- the base at position 593 of the base sequence set forth in SEQ ID NO: 1 is T. More specifically, the nucleotide site at position 593 of the nucleotide sequence described in SEQ ID NO: 1 in the “Nipponbare” genome is a mutation from C to ⁇ .
- the base at position 304 in the base sequence of SEQ ID NO: 2 is ⁇ . More specifically, The nucleotide site at position 304 of the nucleotide sequence described in SEQ ID NO: 2 in the “Nipponbare” genome is a mutation from A to T.
- the nucleotide at position 450 in the nucleotide sequence of SEQ ID NO: 3 is A. More specifically, the nucleotide at position 450 in the nucleotide sequence of SEQ ID NO: 3 in the “Nipponbare” genome is a mutation from G to A.
- the base at position 377 in the base sequence of SEQ ID NO: 4 is C. More specifically, the nucleotide at position 377 in the nucleotide sequence of SEQ ID NO: 4 in the “Nipponbare” genome is a mutation from T to C.
- the base at position 16 in the base sequence of SEQ ID NO: 5 is C. More specifically, the base position at position 163 of the base sequence described in SEQ ID NO: 5 in the “Nipponbare” genome is a mutation from T to C.
- the base at position 624 of the base sequence of SEQ ID NO: 6 is (:. More specifically, “Nipponbare” The base sequence of 624 to 626 of the base sequence of SEQ ID NO: 6 in the genome The base at the position is a deletion mutation.
- nucleotide at position 534 in the nucleotide sequence described in ⁇ is C. More specifically, the nucleotide at position 534 in the nucleotide sequence of SEQ ID NO: 7 in the “Nipponbare” genome is a mutation from A to C.
- the nucleotide at position 358 of the nucleotide sequence set forth in SEQ ID NO: 8 is G. More specifically, it is a GT insertion mutation at a nucleotide site between positions 358 and 389 of the nucleotide sequence described in SEQ ID NO: 8 in the “Nipponbare” genome.
- G is the base at position 475 in the base sequence of SEQ ID NO: 9. More specifically, the nucleotide at position 475 in the nucleotide sequence of SEQ ID NO: 9 in the “Nipponbare” genome is a mutation from T to G.
- the base at position 233 of the base sequence described in SEQ ID NO: 10 is A. More specifically, the nucleotide site at position 233 of the nucleotide sequence of SEQ ID NO: 10 in the “Nipponbare” genome is a mutation from G to A. (11 ′) The base at position 61 in the base sequence of SEQ ID NO: 11 is A. More specifically, the nucleotide positions at positions 6 12 and 6 13 of the nucleotide sequence described in SEQ ID NO: 11 in the “Nipponbare” genome are mutations from CA to AG.
- the nucleotide at position 765 in the nucleotide sequence of SEQ ID NO: 12 is T. More specifically, the nucleotide at position 765 in the nucleotide sequence of SEQ ID NO: 12 in the “Nipponbare” genome is a mutation from G to ⁇ .
- the base at position 571 in the base sequence described in SEQ ID NO: 13 is ⁇ . More specifically, the nucleotide position at position 51 in the nucleotide sequence of SEQ ID NO: 13 in the “Nipponbare” genome is a mutation from G to ⁇ .
- the base at position 600 in the base sequence of SEQ ID NO: 14 is G. More specifically, the nucleotide at position 600 in the nucleotide sequence of SEQ ID NO: 14 in the “Nipponbare” genome is a mutation from A to G.
- nucleotide at position 23 in the nucleotide sequence of SEQ ID NO: 15 is A. More specifically, the nucleotide site at position 23 in the nucleotide sequence of SEQ ID NO: 15 in the “Nipponbare” genome is a mutation from G to A.
- the nucleotide at position 247 of the nucleotide sequence of SEQ ID NO: 16 is A. More specifically, the nucleotide site at position 247 of the nucleotide sequence described in SEQ ID NO: 16 in the “Nipponbare” genome is a mutation from G to A.
- the base at position 16 in the base sequence of SEQ ID NO: 17 is A. More specifically, the nucleotide at position 163 of the nucleotide sequence described in SEQ ID NO: 17 in the “Nipponbare” genome is a mutation from G to A.
- nucleotide at position 42 of the nucleotide sequence set forth in SEQ ID NO: 18 is C. More specifically, the nucleotide site at position 421 in the nucleotide sequence of SEQ ID NO: 18 in the “Nipponbare” genome is a mutation from A to C.
- the nucleotide at position 178 of the nucleotide sequence set forth in SEQ ID NO: 19 is G. More specifically, the nucleotide sequence at position 178 of the nucleotide sequence of SEQ ID NO: 19 in the “Nipponbare” genome The base site is a deletion mutation.
- the base at position 141 of the base sequence set forth in SEQ ID NO: 20 is G. More specifically, the nucleotide site at position 141 of the nucleotide sequence described in SEQ ID NO: 20 in the “Nipponbare” genome is a mutation from A to G.
- the nucleotide at position 480 in the nucleotide sequence of SEQ ID NO: 21 is C. More specifically, the nucleotide at position 480 in the nucleotide sequence of SEQ ID NO: 21 in the “Nipponbare” genome is a mutation from D to C.
- the base at position 48 1 in the base sequence of SEQ ID NO: 22 is C. More specifically, the nucleotide site at position 481 of the nucleotide sequence described in SEQ ID NO: 22 in the “Nipponbare” genome is a mutation from T to C.
- the nucleotide at position 13 in the nucleotide sequence of SEQ ID NO: 23 is C. More specifically, the nucleotide site at position 131 of the nucleotide sequence described in SEQ ID NO: 23 in the “Nipponbare” genome is a mutation from G to C.
- the nucleotide at position 5110 in the nucleotide sequence of SEQ ID NO: 24 is A. More specifically, the nucleotide site at position 5110 in the nucleotide sequence of SEQ ID NO: 24 in the “Nipponbare” genome is a mutation from G to A.
- the nucleotide at position 248 of the nucleotide sequence set forth in SEQ ID NO: 25 is T. More specifically, the nucleotide site at position 248 of the nucleotide sequence described in SEQ ID NO: 25 in the “Nipponbare” genome is a mutation from C to ⁇ .
- the nucleotide at position 92 in the nucleotide sequence of SEQ ID NO: 26 is C. More specifically, the nucleotide at position 92 in the nucleotide sequence of SEQ ID NO: 26 in the “Nipponbare” genome is a mutation from G to C.
- the base at position 73 of the base sequence set forth in SEQ ID NO: 27 is G. More specifically, the nucleotide site at position 743 in the nucleotide sequence of SEQ ID NO: 27 in the “Nipponbare” genome is a mutation from A to G.
- the nucleotide site at position 552 in the nucleotide sequence of SEQ ID NO: 28 is a C to T mutation.
- determining the base type generally means any of the above (1) to (28) on the genome of a rice plant whose rice variety is to be distinguished (hereinafter sometimes referred to as “test rice”). This refers to determining the type of base at the site described in any of them, but it is not always necessary to determine the specific type of base. Even if it is not possible to specifically determine the nucleotide type of any of the above-mentioned sites (1) to (28) in the genome of the test rice, if it is determined that it is the same as Nipponbare, the rice cultivar is identified. It is possible to do.
- step (B) the base species and the variety determined in the above step (A) are associated (step (B)).
- rice varieties that can be distinguished are as follows (in this specification, the names of each variety may be abbreviated as shown in parentheses). Nipponbare (nhb), Hatsimo (hts :), Mutsu Homare (mth), Yukinosei (yki), Kirara 397 (krr;), Tsugaru Roman (tgr), Five Million Stones (ghm), Forest Bear (Innk;), Yukari Akari (yma), No Naetzen (liez), Koshihikari (ksh), Moonlight (tkh), Akitakomachi (akk), Morning Light (ash), Aichi Kaori (ank), Festival Haru (mtb), Hinohikari (hnh), Dream Tsukushi (ymt), Hitomebore (hi t), Manamusume (imnm), Fussaotome (fom), Dontokoi (don), Kinu Hikari (knh), Sasanishiki (sss
- the identification method of the present invention can be generally used to identify the name of a rice cultivar of unknown rice variety from among the above varieties, or to determine whether or not the rice is the varieties described above.
- the present inventors determined the base species of the above rice varieties at the sites described in the above (1) to (28) in the rice genome, and created a polymorphic marker. Details of these polymorphic markers (the names of the polymorphic markers, and the
- the nucleotide species in each rice variety shown in Table 1 are determined.
- the rice variety can be determined based on the evening.
- the nucleotide type is determined using the polymorphic markers described in (1 ′) to (28 ′). In this method, it is not always necessary to determine the base species for all the sites described in (1) to (28) above.
- the varieties of the test rice are determined to be “Kirara 397”.
- the nucleotide type was determined using the polymorphic markers “S0126” and “S0015”, and the nucleotide type at position 475 in the nucleotide sequence of the nucleotide sequence described in (9) above, SEQ ID NO: 9, was G.
- the base type at position 593 of the base sequence described in SEQ ID NO: 1 in the above (1) is C
- the test rice cultivar is determined to be “Yukinosei”. You.
- judging rice varieties based on Table 1 provided by the present invention from the base species at the sites described in (1) to (28) above of the determined test rice genome can be performed by those skilled in the art. Is easy to do.
- the site described in (1) to (28) in the test rice genome can be used.
- the site described in (1) to (28) in the genome of the test rice using the polymorphic marker described in the above (1 ′) to (28 ′). is determined based on whether or not the base type of the rice is the same as the base type at the site in Nipponbare.
- the present inventors investigated whether or not the base type at each site described in (1) to (28) above is the same as the base type at the site of “Nipponbare” for each of the above rice varieties.
- Combinations of polymorphic markers capable of discriminating the above varieties were determined (Table 2 ⁇ 7).
- the shaded portions in Tables 2 to 7 are examples of combinations of polymorphic markers that can identify each variety.
- the present invention is not necessarily limited to the combinations of the polymorphic markers listed in Tables 2 to 7, and those skilled in the art will understand that the above-mentioned (1) to (28) of the 26 rice varieties provided by the present invention can be used. From the information on the base type at the site described, a combination of polymorphic markers that can be used for cultivar discrimination can be appropriately selected. In the table, ⁇ indicates a match with “Nipponbare”, and X indicates a mismatch with “Nipponbare”.
- the power of the lamp is lower than the power of the lamp.
- Yu Na is Chi Bi Gan or fu etc. key post of anaerobic
- the marker is at the maximum level.
- the base type at position 765 of the base sequence described in SEQ ID NO: 12 in (12) above is determined.
- the base type at the site does not match the base type at the site in “Nipponbare”, and the base type is determined using the polymorphic marker “S0208”.
- the test rice cultivar is determined to be “Fusaotome”.
- the base type at each base site described in (1) to (28) above is determined, and the base type at the site is determined. However, if it is determined whether or not it is the same as the base species at the site in "Nipponbare", it is easy to determine the variety of the test rice with reference to Tables 2 to 7. .
- the determination of the base species in the above step (A) of the present invention can be carried out by those skilled in the art by a known base sequence determination method or polymorphism mutation detection method.
- DNA is prepared from the test rice.
- examples of the test rice include, but are not limited to, the leaves, roots, seeds, calli, leaf sheaths, and cultured cells of the above rice.
- those skilled in the art can prepare DNA based on the chromosomal DNA extracted from the test rice.
- a method of pulverizing rice seeds in an aqueous solvent and then extracting rice genome DNA from the pulverized seeds can be suitably described, but the method is not particularly limited.
- the seeds are milled.
- a DNA containing the site described in any one of the above (1) to (28) or a base site in a complementary strand forming a base pair with a base in the site is amplified.
- examples of a method for amplifying DNA include a PCR method.
- the base sequence of the amplified DNA is determined.
- the DNA base sequence can be determined by a method known to those skilled in the art.
- the determined DNA base sequence is then compared with a control.
- the control in this method is usually “Nipponbare” and is the sequence described in SEQ ID NOs: 1-28.
- those skilled in the art can also obtain the nucleotide sequence information of the wild-type Nipponbare genome from various gene databases or literatures.
- the rice variety discrimination method of the present invention can be performed according to various methods capable of detecting a polymorphism, in addition to the method of directly determining the nucleotide sequence of DNA derived from a test rice as described above.
- the rice variety discrimination method of the present invention can be performed by the following method.
- DNA is prepared from the test rice.
- the prepared DNA is cut with a restriction enzyme.
- the DNA fragments are separated according to their size.
- the size of the detected DNA fragment is compared with a control.
- DNA is prepared from a test rice.
- a DNA containing the site according to any one of the above (1) to (28) or a base site in a complementary strand forming a base pair with the base at the site is amplified.
- the amplified DNA is cut with a restriction enzyme.
- the DNA fragments are separated according to their size. Then, the size of the detected DNA fragment is compared with a control.
- Examples of such methods include, for example, restriction fragment length polymorphism (Restriction).
- Fragment Length Polymorphism / RFLP PCR-RFLP method.
- the size of the fragment generated after the restriction enzyme treatment is compared with that of the control. Change.
- these mutations can be detected as a difference in the mobility of the band after electrophoresis.
- chromosomal DNA is treated with these restriction enzymes, electrophoresed, and then subjected to the method of the present invention.
- the presence or absence of a mutation can be detected by performing Southern blotting using a oligonucleotide.
- the restriction enzyme used can be appropriately selected by those skilled in the art according to each mutation.
- DNA is prepared from a test rice.
- a DNA containing the site described in any one of the above (1) to (28) or a base site in a complementary strand forming a base pair with a base in the site is amplified.
- the amplified DNA is dissociated into single strands.
- the dissociated single-stranded DNA is separated on a nondenaturing gel. The mobility of the separated single-stranded DNA on the gel is compared with that of a control.
- PCR-SSCP single-strand conformation
- each strand forms a unique higher-order structure depending on its base sequence.
- the dissociated DNA strands are electrophoresed in a polyacrylamide gel containing no denaturing agent, the single-stranded DNAs with the same complementary length move to different positions according to the difference in their higher-order structures.
- the higher order structure of this single-stranded DNA is also changed by the substitution of a single base, and shows different mobility in polyacrylamide gel electrophoresis. Therefore, by detecting the change in the mobility, it is possible to detect the presence of a mutation due to a point mutation, deletion, insertion or the like in the DNA fragment.
- a DNA containing a site according to any of the above (1) to (28) or a base site in a complementary strand forming a base pair with a base at the site is subjected to PCR or the like.
- the amplification range is usually preferably about 200 to 400 bp.
- PCR can be performed by those skilled in the art by appropriately selecting reaction conditions and the like.
- the amplified DNA product can be labeled by using a primer labeled with an isotope such as 32 P, a fluorescent dye, or biotin.
- the amplified DNA product can be labeled by adding PCR to a PCR reaction solution and adding a substrate base labeled with an isotope such as 32 P, a fluorescent dye, or biotin, and performing PCR.
- labeling can also be performed by adding a substrate base labeled with an isotope such as 32 P, a fluorescent dye, or biotin to the amplified DNA fragment using Klenow enzyme or the like after the PCR reaction.
- the labeled DNA fragment thus obtained is denatured by applying heat or the like, and electrophoresis is performed on a polyacrylamide gel containing no denaturant such as urea.
- the conditions for separating DNA fragments can be improved by adding an appropriate amount (about 5 to 10%) of glycerol to the polyacrylamide gel.
- electrophoresis conditions vary depending on the properties of each DNA fragment, but it is usually carried out at room temperature (20 to 25 ° C). If the desired separation is not obtained, the optimal mobility is 4 to 3 (optimal mobility at temperatures up to TC).
- the mobility of the DNA fragments is detected by autoradiography using an X-ray film, a scanner that detects fluorescence, etc., and analyzed. If a band is detected, the band can be excised directly from the gel, amplified again by PCR, and sequenced directly to confirm the presence of the mutation. Even when no gel is used, the band can be detected by staining the gel after electrophoresis with ethidium gel, a silver staining method.
- the site according to any one of the above (1) to (28), or the site Two types of probes, labeled with reporter fluorescence and quencher-fluorescence, are synthesized on an oligonucleotide complementary to the base sequence near the DNA containing the base site in the complementary strand that forms a base pair with the base at the position (Step ( b)).
- the probe synthesized in the step (b) is hybridized with the DNA prepared in the step (a) (step (c)).
- a DNA containing the site according to any one of the above (1) to (28) or a base site in a complementary strand forming a base pair with the base at the site is amplified.
- Step (d) Next, the emission of fluorescence from the repo is detected (step (e)). Next, the emission of the reporter fluorescence detected in step (e) is compared with the control (step (e).
- Examples of the above method include the TaqMan PCR method (SNP polymorphism strategy, Kenichi Matsubara and Yoshiyuki Sakaki, Nakayama Shoten, 94-105, Genet Anal. (1999) 14: 143-149) and the like.
- a reporter fluorescence is labeled on the 5 'end of the probe.
- examples of the reporter fluorescence include, but are not limited to, FAM and VIC.
- quencher monofluorescence is labeled at the 3 'end of the probe. In the present invention, the quencher fluorescence is not particularly limited as long as it can quench the reporter fluorescence.
- hybridization is performed under stringent conditions.
- Stringent conditions are, for example, usually conditions of 42 ° C, 2XSS 0.1% SDS, preferably 50, 2XSSC, 0.1% SDS, more preferably 65DS ⁇ 0.1XSSC and 0.1% SDS.
- the conditions are not particularly limited to these conditions.
- Factors affecting the stringency of the hybridization can be considered as multiple factors such as temperature and salt concentration, and those skilled in the art can realize the optimal stringency by selecting these factors as appropriate. is there.
- the DNA containing the site according to any one of the above (1) to (28), or a base site in a complementary strand forming a base pair with the base in the site is subjected to 5 ′ nuclease activity.
- Amplification is carried out using a DNA polymerase having a property.
- the portion of the probe labeled with the reporter fluorescence and quencher fluorescence is cleaved at the repo-overnight fluorescence label, and the repo-overnight fluorescence is released.
- a preferable example of the DNA polymerase having 5 'nuclease activity is Taq DNA polymerase, but is not limited thereto.
- the released fluorescence of the reporter is detected overnight, and the emission of the reporter fluorescence is compared with a control.
- step (b) a probe whose 5 ′ end is complementary to the site described in any one of the above (1) to (28) or a base site in a complementary strand that forms a base pair with the base at the site is synthesized (step (c )).
- the probe synthesized in step (c) is hybridized with the DNA prepared in step (a) (step (d)).
- step (d) the DNA hybridized in step (d) is cleaved with a single-stranded DNA cleaving enzyme.
- the single-stranded DNA-cleaving enzyme is not particularly limited, and examples thereof include the following c1 eavase.
- the probe released in the step (e) is hybridized with the detection probe (step (f)).
- the DNA hybridized in step (f) is cut enzymatically, and the intensity of the fluorescence generated at that time is measured (step (g)).
- the fluorescence intensity measured in the step (g) is compared with a control (step (h)).
- Examples of the method include the Invader method (SNP genetic polymorphism strategy, Kenichi Matsubara and Yoshiyuki Sakaki, Nakayama Shoten, p94-105, Genome Research (2000) 10: 330-343). Specifically, first, the site according to any one of the above (1) to (28), or the 3 ′ side from the base site in the complementary strand forming a base pair with the base in the site is ⁇ -type. A probe (probe A) is synthesized that has a sequence (flap) that is complementary to the sequence and has a sequence (flap) unrelated to the type I sequence on the 5 'side.
- a probe having a sequence complementary to the ⁇ -type on the site according to any one of the above (1) to (28) or on a 5 ′ side from a base site in a complementary strand forming a base pair with a base in the site. B) is synthesized.
- the base corresponding to the site described in any one of the above (1) to (28) or a base site corresponding to a base site in a complementary strand forming a base pair with the base at the site may be arbitrary.
- these probes are hybridized to the prepared type I DNA.
- the base of the probe B corresponding to the site according to any one of the above (1) to (28), or a base site in a complementary strand forming a base pair with the base at the site enters the 5′-end. Recognizes the flap-shaped part, and cleaves the hybridized DNA using an endonuclease (cl eavase) that cleaves the 3 ′ side of the base of probe A corresponding to the flap. This releases the flap portion. Next, the released flap portion and the probe for detection are hybridized.
- the detection probe is generally called a fluorescence resonance energy trans fer (FRET) probe.
- FRET fluorescence resonance energy trans fer
- the 5 'side can complementarily bind by itself.
- the 3 ′ side has a sequence complementary to the flap.
- a 5' end is labeled with reporter fluorescence
- the 3 'side of the 5' end is labeled with quencher fluorescence.
- the base at the 3 'end of the released flap hybridizes to the FRET probe.
- the repo overnight fluorescence of the probe penetrates the labeled complementary binding site, thereby generating a structure recognized by cl eavase.
- the fluorescence of the repo released by the cleavage of the reporter fluorescent label by cl eavase is detected, and the measured fluorescence intensity is compared with that of a control.
- DNA is prepared from a test rice (step
- step (a) a DNA containing the site described in any of the above (1) to (28) or a base site in a complementary strand forming a base pair with the base at the site is amplified (step (b)).
- step (c) the amplified DNA is dissociated into single strands (step (c)).
- step (d) only one strand of the dissociated single-stranded DNA is separated (step (d)).
- an extension reaction is performed one base at a time from the site described in any of the above (1) to (28), or the vicinity of a base site in a complementary strand that forms a base pair with a base group at the site, and the elongation reaction is performed at that time.
- the pyrophosphoric acid is enzymatically luminesced, and the luminescence intensity is measured (step (e)).
- the fluorescence intensity measured in step (e) is compared with that of a control (step (f)).
- Examples of such a method include the Pyrosequencing method (Anal.
- step (a) a DNA containing the site described in any one of the above (1) to (28) or a base site in a complementary strand forming a base pair with a base at the site is amplified (step (b)).
- step (b) a primer complementary to the site according to any one of the above (1) to (28) or a sequence up to one base adjacent to the base site in the complementary strand forming a base with the base at the site is synthesized.
- Step (c) Next, in the presence of the fluorescently labeled nucleotide, the DNA amplified in step (b) is converted into a type III, and a single base extension reaction is performed using the primer synthesized in step (c) (step (d)).
- step (e) the degree of polarization of the fluorescence is measured (step (e)).
- step (f) the degree of polarization of the fluorescence measured in step (e) is compared with a control (step (f)).
- Examples of such a method include the Acyclo Prime method (Genome Research (1999) 9: 492-498).
- the Acyclo Prime method uses one set of primers for genome amplification and one primer for SNPs detection.
- a region containing SNPs in the genome is amplified by PCR. This step is the same as for normal genomic PCR.
- the obtained PCR product is annealed with a primer for detecting a polymorphism, and an extension reaction is performed.
- a primer for detecting a polymorphism is designed to anneal to a region adjacent to a polymorphism site to be detected.
- a nucleotide derivative (Termine overnight) labeled with a fluorescent polarizing dye and blocking 3'-0H is used as a nucleotide substrate for the extension reaction.
- step (A) in the method of the present invention can be suitably carried out using the Acyclo Prime method.
- Primers for genome amplification and primers for polymorphism detection used in the Acyclo Prime method can be appropriately prepared by those skilled in the art based on information on the genome sequence and the polymorphic site.
- Examples of the primer for genome amplification and the primer for polymorphism detection used in the rice cultivar differentiation method of the present invention using the Acyclo Prime method include, for example, the primers described in Tables 8 and 9. However, it is not limited to these primers.
- DNA is prepared from a test rice (step (a)).
- a DNA containing the site described in any one of the above (1) to (28) or a base site in a complementary strand forming a base pair with a base at the site is amplified (step (b)).
- a primer complementary to the site according to any one of the above (1) to (28) or a sequence up to one base adjacent to a base site in a complementary strand forming a base pair with the base at the site is synthesized. (Step (c)).
- step (b) the DNA amplified in step (b) is converted into a type III, and a single base extension reaction is performed using the primer synthesized in step (c) (step (d)).
- step (d) the base type used in the reaction in step (d) is determined using a sequencer (step (e)).
- step (f) the base species determined in step (e) is compared with a control (step (f)). Examples of such a method include the SNuPe method (Rapid Commun Mass Spectrom. (2000) 14: 950-959).
- DNA is prepared from a test rice (step (a)).
- a DNA containing the site described in any one of the above (1) to (28) or a base site in a complementary strand forming a base pair with a base at the site is amplified (step (b)).
- the DNA amplified in step (b) is subjected to a mass spectrometer to measure the molecular weight (step (c)).
- the molecular weight measured in step (c) is compared with a control (step (d)).
- Examples of such a method include the MALDI-TOF MS method (Trends Biotechnol (2000): 18: 77-84).
- step (a) a DNA containing the site described in any of the above (1) to (28) or a base site in a complementary strand forming a base pair with the base at the site is amplified (step (b)).
- step (c) a substrate having the nucleotide probe immobilized thereon is provided.
- substrate means a plate-like material to which nucleotides can be immobilized.
- nucleotides include oligonucleotides and polynucleotides. Renucleotides.
- the substrate of the present invention is not particularly limited as long as nucleotides can be immobilized, but a substrate generally used in DNA array technology can be suitably used.
- DNA arrays are composed of thousands of nucleotides printed on a substrate at high density. Usually these DNAs are printed on the surface of a non-porous substrate.
- the surface layer of the substrate is generally glass, but a permeable (porous) membrane, for example, a nitrocellular membrane can be used.
- an array based on oligonucleotides developed by Affymetrix can be exemplified as a method for immobilizing (arraying) nucleotides.
- oligonucleotide array oligonucleotides are usually synthesized in situ.
- in situ synthesis of oligonucleotides using pho to li thographic technology (Af fymetrix) and ink jet fixing technology (Roset ta Inpharma tics) has been already known. Therefore, any of the techniques can be used for manufacturing the substrate of the present invention.
- the nucleotide probe immobilized on the substrate is a nucleotide probe capable of detecting a polymorphism at a site according to any one of the above (1) to (28), or at a base site in a complementary strand forming a base pair with a base at the site. If so, there is no particular limitation. That is, the probe specifically hybridizes with DNA containing a site described in any of the above (1) to (28), or a DNA containing a base site in a complementary strand forming a base pair with a base at the site. It is a probe that redistributes.
- the nucleotide probe may be a DNA comprising a site according to any one of the above (1) to (28), or a DNA comprising a base site in a complementary strand forming a base pair with a base at the site. Need not be completely complementary to In the present invention, the length of the nucleotide probe to be bound to the substrate is generally 10 to 100 bases, preferably 10 to 50 bases, and more preferably 15 to 25 bases when the oligonucleotide is immobilized. You. Next, in this method, the DNA of step (b) is brought into contact with the substrate of step (c) (step (d)). In this step, the DNA is hybridized to the nucleotide probe.
- the hybridization reaction solution and reaction conditions can vary depending on various factors such as the length of the nucleotide probe immobilized on the substrate, but can be generally performed by a method well known to those skilled in the art.
- step (e) the intensity of hybridization between the DNA and the nucleotide probe immobilized on the substrate is detected.
- This detection can be performed, for example, by reading the fluorescent signal with a scanner or the like.
- DNA arrays DNA fixed on a slide glass is generally called a probe, while labeled DNA in a solution is called a target. Therefore, the above nucleotide immobilized on the substrate is referred to herein as a nucleotide probe.
- the intensity detected in step (e) is then compared with a control (step (d)).
- Examples of such a method include a DNA array method (SNP gene polymorphism strategy, Kenichi Matsubara and Yoshiyuki Sakaki, Nakayama Shoten, pl28-135, Nature Genetics (1999) 22: 164-167) and the like.
- SNP gene polymorphism strategy Kenichi Matsubara and Yoshiyuki Sakaki, Nakayama Shoten, pl28-135, Nature Genetics (1999) 22: 164-167) and the like.
- an allele-specific 01 nucleonucleotide (ASO) hybridization method can be used for the purpose of detecting only a mutation at a specific position.
- ASO allele-specific 01 nucleonucleotide
- the present invention also provides a primer for discriminating rice varieties, comprising the site according to any one of the above (1) to (28), or a base site in a complementary strand forming a base pair with a base in the site.
- Oligonucleotides for amplifying the DNA region I will provide a.
- Such an oligonucleotide was designed so as to sandwich the site according to any one of the above (1) to (28), or a base site in a complementary strand forming a base pair with a base at the site. Oligonucleotides.
- the design and synthesis of PCR primers can be generally performed by methods well known to those skilled in the art.
- the length of the PCR primer is not particularly limited, but is usually 15 bp to 100 bp, preferably 17 bp to 30 bp. Further, the present invention provides the above (1) to
- the oligonucleotide is useful, for example, as a primer for the rice cultivar identification method of the present invention using the Acyclo Prime method.
- Such oligonucleotides include, for example, the oligonucleotides shown in Table 8 or 9.
- the present invention hybridizes with a region according to any one of the above (1) to (28) or a DM region including a base region in a complementary strand forming a base pair with a base at the position, and comprises at least 15 nucleotides.
- a region according to any one of the above (1) to (28) or a DM region including a base region in a complementary strand forming a base pair with a base at the position and comprises at least 15 nucleotides.
- an oligonucleotide having a chain length for a rice variety discrimination method.
- the oligonucleotide is used, for example, as a probe.
- the oligonucleotide specifically hybridizes to a site according to any one of the above (1) to (28) or a DNA region containing a base site in a complementary strand forming a base pair with a base in the site. It is.
- the term "specifically eight hybridizations” refers to ordinary hybridization conditions, preferably to stringent hybridization conditions (for example, Sambrook et al., Molecular Emulsification).
- the oligonucleotide may be a site according to any one of the above (1) to (28), or a site at the site. It does not need to be completely complementary to the DNA region containing the base site in the complementary strand that forms a base pair with the base.
- the length of the oligonucleotide is not particularly limited as long as it is 15 nucleotides or more.
- the oligonucleotide can be produced, for example, by using a commercially available oligonucleotide synthesizer. It can also be prepared as a double-stranded DNA fragment obtained by restriction enzyme treatment or the like.
- the oligonucleotide is appropriately labeled before use.
- Labeling methods include, for example, a method of labeling by phosphorylating the 5 'end of the oligonucleotide with 32 P using T4 polynucleotide kinase, and a random hexamer using DNA polymerase such as Klenow enzyme.
- a method of incorporating a substrate base labeled with an isotope such as 32 P, a fluorescent dye, or biotin or the like using an oligonucleotide or the like as a primer (random prime method) can be mentioned.
- the base described in the above () to (28 ′) Oligonucleotides having a chain length of at least 15 nucleotides with a polymorphic mutation of are also included in the present invention.
- the present invention further provides a rice cultivar discrimination kit comprising the oligonucleotide of the present invention.
- the kit of the present invention can further include an alkaline aqueous solvent.
- a control standard rice sample and instructions describing the use of the kit can be packaged.
- FIG. 1 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the base sequence shown in SEQ ID NO: 1.
- FIG. 2 shows a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence of SEQ ID NO: 2
- FIG. 2 shows a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence of SEQ ID NO: 2
- FIG. 3 is a view showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence shown by SEQ ID NO: 3.
- FIG. 4 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence shown by SEQ ID NO: 4.
- FIG. 5 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence shown by SEQ ID NO: 5.
- FIG. 6 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the base sequence shown in SEQ ID NO: 6.
- FIG. 2 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the base sequence shown by SEQ ID NO: ⁇ .
- FIG. 8 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence shown by SEQ ID NO: 8.
- FIG. 9 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence shown by SEQ ID NO: 9.
- FIG. 10 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence shown by SEQ ID NO: 10.
- FIG. 11 shows that the nucleotide sequence shown in SEQ ID NO: 11 was found among 24 rice varieties.
- FIG. 2 is a diagram showing a polymorphic site obtained and a primer sequence for amplifying a DNA region containing the site.
- FIG. 12 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence shown by SEQ ID NO: 12.
- FIG. 13 is a diagram showing a polymorphic site found among 24 rice varieties in the nucleotide sequence of SEQ ID NO: 13.
- FIG. 14 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence shown by SEQ ID NO: 14.
- FIG. 15 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence shown in SEQ ID NO: 15.
- FIG. 16 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence represented by SEQ ID NO: 16.
- FIG. 17 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence shown by SEQ ID NO: 17.
- FIG. 18 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence represented by SEQ ID NO: 18.
- FIG. 19 is a view showing a polymorphic site found among 24 rice varieties in the nucleotide sequence represented by SEQ ID NO: 19.
- FIG. 20 shows the polymorphic site found among the 24 rice varieties and the primer sequence for amplifying the DNA region containing the site in the nucleotide sequence represented by SEQ ID NO: 20.
- FIG. 21 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence shown by SEQ ID NO: 21.
- FIG. 22 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence shown by SEQ ID NO: 22.
- FIG. 23 is a continuation of FIG. 22.
- FIG. 24 is a view showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence shown by SEQ ID NO: 23.
- FIG. 25 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence shown by SEQ ID NO: 24.
- FIG. 26 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence shown by SEQ ID NO: 25.
- FIG. 27 is a view showing a polymorphic site found among 24 rice varieties in the nucleotide sequence represented by SEQ ID NO: 26.
- FIG. 28 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence represented by SEQ ID NO: 27.
- FIG. 29 is a diagram showing a polymorphic site found among 24 rice varieties and a primer sequence for amplifying a DNA region containing the site in the nucleotide sequence shown by SEQ ID NO: 28.
- FIG. 30 is a photograph showing the result of PCR using DNA extracted from polished rice as type III.
- the milled rice sample is commercial rice with the label “Akitakomachi” from Ibaraki Prefecture in 2000.
- the PCR primer used was PGC1001 (U: 5′_accgggtagggaaacaaac-3′Z SEQ ID NO: 113, L: 5′-aataatacttcggcgcatcg-3 ′ / SEQ ID NO: 114).
- a PCR reaction was performed using the DNA extracted by the following method as type I, and the reaction solution was separated by 1.5% agarose gel electrophoresis.
- Cycle sequence was performed using TerminatorCycle Sequencing kit for MegaBACE (Amersham Biosciences) II: to prepare a sample for sequencing.
- the sequence was performed using MegaBACE 1000 DNA Sequencing System (Molecular Dymnamics). The obtained sequence was compared for each variety, and single nucleotide substitution polymorphism was searched. Sequences were performed at least twice for the same cultivar and the same primer, and only those that were reliable were judged to be polymorphisms.
- ⁇ Data description format 1. Mark the part of the primer with Katsuko, and add ":” for Upper primer site and “q:” for Lower primer site.
- aactc LQ aatcacgccc atccttgcct ''
- SNPs sites are given a force and an identification number.
- the identification number is attached to both the starting sword and the ending sword.
- DNA extraction from polished rice, brown rice and cooked rice was studied. First, in a 2ml tube (Eppendorf), 1 grain of milled rice, brown rice and cooked rice, 0.4ml of extraction buffer (1M KC1, lOmM Tris-HCK ImM EDTA, 0. IN NaOH), 3mm tall zirconia pool Put it in, cover it, let it stand at 4 for 30 minutes, and then use Retch crusher mixer mill MM300. It was pulverized twice at 300 Hz x 2 min x 2 to obtain a milky liquid. This was centrifuged at lOOOOrpmXlO, and 0.3 ml of the supernatant was transferred to another tube.
- extraction buffer (1M KC1, lOmM Tris-HCK ImM EDTA, 0. IN NaOH
- 3mm tall zirconia pool Put it in, cover it, let it stand at 4 for 30 minutes, and then use Retch crusher mixer mill MM300. It was pulverized twice at 300 Hz x 2 min
- the buffer used first in Methods 5 and 6 was made 1M KC1 and 10 mM Tris-HCK ImM EDTA (Methods 3 and 4 respectively).
- extraction by the CTAB method was also performed. Specifically, put one grain of milled rice and 0.2 ml CTAB buffer (method 1) or 0.2 ml 0. IN NaOH (method 2) and a thigh-diameter zirconia pole in a 2 ml tube, and cover with the same conditions as method 5. Crush with. Add 0.7ml CTAB buffer and heat-treat with 56 for 20 minutes. 640/21 phenol / black mouth form (1: 1) was added and mixed, centrifuged at 100 rpm x 10 min, and 0.7 ml of the supernatant was transferred to another tube. Add 1.3 ml CTAB precipitation buffer,
- the precipitate was dissolved by adding 0.5 ml IN NaCl containing RNase, and then 1 ml of ethanol was added and mixed, followed by centrifugation at 10,000 ⁇ 10 minutes. The precipitate was washed with 1 ml of 70% ethanol, dried and dissolved in 30 l of sterile water.
- primer PGC1001 (sequence U: 3 ⁇ 4-accgggtagggaaacaaac-3 '/ arrangement (1 number: 113, L: 5-aataatacttcggcgcatcg-3' / sequence number: 1 14) 'The results are shown in Fig. 30. No PCR amplification was observed in the polished rice DNA extracted by methods 1 and 2, but the amplification was excellent in methods 3 to 6. As a result, it was necessary to perform phenol / cloth-form treatment in extracting DNA from milled rice. 7332
- Method 5 was the simplest and most efficient.
- PCR reaction was performed using the extracted DNA as type III.
- an acycloprime reaction was performed using the PCR product as type III, and polymorphism (SNP) was determined.
- Example 4 Rice varieties identification In [Example 3], it is necessary to distinguish these three varieties in order to determine which of the three varieties determined to be other than Akitakomachi is Kirara 397, Koshihikari, Yume Tsukushi, or Kinuhikari. Using sufficient primers of two markers (S001 5 and S0045), PCR was performed using the extracted DNA as type III. An acycloprime reaction was performed using the PCR product as type II to determine polymorphism (SNP).
- the method of the present invention examines polymorphisms in the rice genome, so that it is possible to accurately identify varieties with a small amount of rice samples. In addition, the method of the present invention enables accurate varietal discrimination between closely related varieties.
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AU2003242177A AU2003242177A1 (en) | 2002-06-10 | 2003-06-10 | Method of distingiuishing rice varieties |
JP2004511550A JP4389783B2 (ja) | 2002-06-10 | 2003-06-10 | イネの品種鑑別法 |
US10/517,543 US20060035227A1 (en) | 2002-06-10 | 2003-06-10 | Methods for distinguishing rice varities |
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JP (2) | JP4389783B2 (ja) |
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Cited By (4)
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JP2006174714A (ja) * | 2004-12-21 | 2006-07-06 | Plant Genome Center Co Ltd | イネゲノム多型マーカー、およびその利用 |
JP2009118776A (ja) * | 2007-11-14 | 2009-06-04 | Toyama Univ | 類似植物体および生薬同定用dnaマイクロアレイ |
JP2011188846A (ja) * | 2010-02-17 | 2011-09-29 | Takii Shubyo Kk | 遺伝的多型マーカーセット、プローブセット、検出キットおよび品種判定方法 |
JP2014533521A (ja) * | 2011-11-28 | 2014-12-15 | シンジェンタ パーティシペーションズ アクチェンゲゼルシャフト | 浸透圧調節物質を使用する、種子からのdna抽出 |
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CN1314332C (zh) * | 2005-07-20 | 2007-05-09 | 哈尔滨商业大学 | 一种高含l-乳酸的酸奶及其制备工艺 |
CN102747138B (zh) * | 2012-03-05 | 2014-03-19 | 中国种子集团有限公司 | 一种水稻全基因组snp芯片及其应用 |
CN104024438B (zh) * | 2012-09-28 | 2015-06-17 | 未名兴旺系统作物设计前沿实验室(北京)有限公司 | Snp位点集合及其使用方法与应用 |
JP5960917B1 (ja) * | 2013-02-07 | 2016-08-02 | チャイナ ナショナル シード グループ カンパニー リミテッド | 水稲全ゲノム育種チップ及びその応用 |
WO2014195199A1 (en) * | 2013-06-03 | 2014-12-11 | Syngenta Participations Ag | Non-disruptive dna isolation from corn seeds |
CN103924003B (zh) * | 2014-05-07 | 2017-05-10 | 江西省超级水稻研究发展中心 | 一种用于水稻细胞质鉴定的分子标记方法 |
CN105671156B (zh) * | 2016-02-19 | 2018-09-04 | 中国科学院植物研究所 | 水稻籽粒镉含量相关基因LCd-11的SNP分子标记的应用 |
CN105543397B (zh) * | 2016-02-26 | 2018-12-25 | 中国科学院植物研究所 | 水稻籽粒镉含量相关基因LCd-38的SNP分子标记的应用 |
CN105671164B (zh) * | 2016-02-29 | 2019-03-08 | 中国科学院植物研究所 | 水稻籽粒镉含量相关基因LCd-41的SNP分子标记的应用 |
CN105624319B (zh) * | 2016-03-24 | 2018-12-25 | 中国科学院植物研究所 | 水稻籽粒镉含量相关基因LCd-31的SNP分子标记的应用 |
WO2019047074A1 (zh) * | 2017-09-06 | 2019-03-14 | 中国农业科学院作物科学研究所 | 用于水稻基因分型的snp分子标记组合及其应用 |
CN108796108A (zh) * | 2018-05-23 | 2018-11-13 | 湖南杂交水稻研究中心 | 水稻两系不育系系谱鉴定的方法 |
CN114395639B (zh) * | 2021-12-31 | 2023-06-09 | 华智生物技术有限公司 | 用于鉴定水稻品系纯度的snp分子标记组合及其应用 |
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JPH06113850A (ja) * | 1992-10-09 | 1994-04-26 | Sumitomo Chem Co Ltd | オリゴヌクレオチドを用いるイネ品種の識別方法およびそのオリゴヌクレオチド |
-
2003
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- 2003-06-10 JP JP2004511550A patent/JP4389783B2/ja not_active Expired - Lifetime
- 2003-06-10 WO PCT/JP2003/007332 patent/WO2003104491A1/ja active Application Filing
- 2003-06-10 US US10/517,543 patent/US20060035227A1/en not_active Abandoned
- 2003-06-10 CN CNA038191555A patent/CN1675373A/zh active Pending
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2009
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Non-Patent Citations (5)
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006174714A (ja) * | 2004-12-21 | 2006-07-06 | Plant Genome Center Co Ltd | イネゲノム多型マーカー、およびその利用 |
JP2009118776A (ja) * | 2007-11-14 | 2009-06-04 | Toyama Univ | 類似植物体および生薬同定用dnaマイクロアレイ |
JP2011188846A (ja) * | 2010-02-17 | 2011-09-29 | Takii Shubyo Kk | 遺伝的多型マーカーセット、プローブセット、検出キットおよび品種判定方法 |
JP2014533521A (ja) * | 2011-11-28 | 2014-12-15 | シンジェンタ パーティシペーションズ アクチェンゲゼルシャフト | 浸透圧調節物質を使用する、種子からのdna抽出 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2003104491A1 (ja) | 2005-10-06 |
JP4938824B2 (ja) | 2012-05-23 |
JP4389783B2 (ja) | 2009-12-24 |
CN1675373A (zh) | 2005-09-28 |
US20060035227A1 (en) | 2006-02-16 |
AU2003242177A1 (en) | 2003-12-22 |
JP2009219498A (ja) | 2009-10-01 |
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