CN107058603A - A kind of catfish DNA bar code standard detection sequence and its application - Google Patents

A kind of catfish DNA bar code standard detection sequence and its application Download PDF

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Publication number
CN107058603A
CN107058603A CN201710497318.9A CN201710497318A CN107058603A CN 107058603 A CN107058603 A CN 107058603A CN 201710497318 A CN201710497318 A CN 201710497318A CN 107058603 A CN107058603 A CN 107058603A
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catfish
bar code
sequence
seq
standard detection
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CN201710497318.9A
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石琼
游欣欣
崔海月
蒋寿佳
耿小燕
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Zhenjiang Huada Detection Co Ltd
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Zhenjiang Huada Detection Co Ltd
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    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12QMEASURING 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
    • C12Q1/00Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
    • C12Q1/68Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
    • C12Q1/6876Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
    • C12Q1/6888Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for detection or identification of organisms

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Abstract

The invention discloses a kind of DNA bar code standard detection sequence of catfish and its application, its sequence such as SEQ ID NO:Shown in 1, the catfish method for identifying molecules of the present invention realizes the reliable DNA molecular identification technology used to the difficulty that catfish and Silurus Soldatovi Meridionalis and the identification of other kind catfish are brought, overcome needs the technological deficiencies such as the professional very familiar to catfish form to complete Individual identification in the prior art, compared with traditional Morphological Identification method, catfish can be quickly and accurately identified.

Description

A kind of catfish DNA bar code standard detection sequence and its application
Technical field
The present invention relates to species identification technical field, more particularly to a kind of catfish DNA bar code standard detection sequence and its Application in species identification.
Background technology
Catfish (scientific name:Silurus asotus) belong to Actinopterygii Cypriniformes Cyprinidae crucian carp category, it is the peculiar thing of China Kind.The similar of catfish is almost distributed across the whole world, most species be live in or the fresh water in rivers and creeks etc. in, but Some Species give birth to Live in ocean.At present, the species identification to catfish is limited only to Morphological Identification, and professional accreditation personnel are seldom.Due to Upper Yangtze River dam, which is built, causes spawning habitat to be destroyed;In addition the invasion and water pollution of alien species cause the existence of catfish Environment subject to severe risks of damage, so the population quantity of catfish increasingly declines.Therefore, the local endemic species of catfish are effectively identified And species conservation is very urgent.
DNA bar code technology (DNA barcoding) refer to in genome a segment standard, short DNA fragmentation reflects One Molecular Identification new technology of earnest kind, can fast and accurately carry out species identification.At present most common point in animal Son mark is the partial sequence of Mitochondrial cytochrome c oxidase subunit I (cytochrome coxidase I, COI) gene. DNA bar code is with a wide range of applications, and studies and leads in species identification, molecular evolution, population genetic, endangered species protection etc. Domain has certain development potentiality.DNA bar code traditional discrimination method different from the past, to the professional skill of researcher simultaneously Without high requirement, up to biologist, under to common biological fan, the technology can be all grasped in a short time.DNA bar code Technology has broken away from the obstacle that traditional form authentication method relies on protracted experience, can be achieved fast and accurately to identify, is Molecular Identification Innovation in methodology, simple to operate, efficiency high, using it is wide the features such as will undoubtedly change the development side in whole species identification field To.With DNA bar code technology, it can be very good fast and effectively to identify catfish.
Species identification is always the vital basic steps of research on taxology or even nearly all biological field.Cause This, accurately to species identification, is particularly to those rare species and the species with Protection significance, taxonomic identification work is just aobvious It must be even more important.Since 2003, since Canadian scientist Hebert is proposed with COI genes as DNA bar code, increasingly Many research shows that DNA bar code has efficient feasibility on species taxonomy.Substantial amounts of result of study show using COI genes as The DNA bar code of mark accurately can carry out species identification to all kinds of animals, can be used as various animal bars from COI genes The standard bar code in code data storehouse.
This method is proved each other with traditional taxology method, and can not only solve that sample in identification is incomplete can not be accurate Really the problems such as identification, and be conducive to Rapid identification.Special fish database is had at present, including more than 1.5 ten thousand kinds of fishes The bar code data of class.But many fish of China are due to its peculiar property, without enough related datas.Also the phase without catfish Correlation gene sequence.
The content of the invention
It is an object of the invention to propose a kind of catfish DNA bar code standard detection sequence and its answering in species identification With.Catfish DNA bar code standard detection sequence provided by the present invention is advantageously implemented the Molecular Identification of catfish, can effectively shorten Qualification time.
For up to this purpose, the present invention uses following technical scheme:
A kind of catfish DNA bar code standard detection sequence, the bar code standards detection sequence is COI genes, its sequence Such as SEQ ID NO:(160bp) shown in 1:
CCTCCTTCCTACTACTATTAGCCTCCTCTGGAGTTGAAGCAGGAGCAGGAA CAGGGTGGACAGTTTACCCCCCTCTTGCAGGAAACCTTGCCCACGCAGGA GCTTCTGTAGATTTAACAATCTTTTCATTACATCTCGCAGGGGTGTCCTCCA TTCTTGG。
The primer pair of the catfish DNA bar code standard detection sequence above-mentioned for expanding, the forward primer of the primer pair Sequence such as SEQ ID NO:Shown in 2, reverse primer is to sequence such as SEQ ID NO:Shown in 3.
Kit of the above-mentioned catfish DNA bar code standard detection sequence, above-mentioned primer in preparation for identifying catfish In application.
A kind of kit for being used to identify catfish, it includes above-mentioned primer pair.It is normal that the kit also includes PCR technologies Use reagent.
A kind of recombinant vector, includes above-mentioned catfish DNA bar code standard detection sequence.
Application of the above-mentioned catfish DNA bar code standard detection sequence, primer pair, kit in identification catfish.
A kind of method for identifying molecules of catfish, comprises the following steps:
(1) the separation and Extraction genomic DNA from tissue samples to be identified;
(2) as template, using pair of primers, expanded using genomic DNA obtained by step (1) by PCR Increase;
The forward primer sequence and reverse primer sequences of the primer are respectively such as SEQ ID NO:2 and SEQ ID NO:3 institutes Show;
SEQ ID NO:2 is as follows:
5’-CCTCCTTCCTACTACTAT-3’;
SEQ ID NO:3 is as follows:
5’-CCAAGAATGGAGGACACC-3’;
(3) PCR amplification product obtained by step (2) is separated with agarose gel electrophoresis, according to expansion Increase production the size result of determination of thing, if energy specific amplification goes out 170 ± 10bp band, carried out sequencing analysis;
(4) according to sequencing result, if with such as SEQ ID NO:The homology of nucleotide sequence shown in 1 98% with On, you can judge that this to be identified is organized as catfish.
The condition of PCR is described in step (2):95 DEG C of denaturation 5min;94 DEG C, 30s, 56 DEG C, 30s, 72 DEG C, 1min, 40 circulations;72 DEG C of extension 10min.
PCR reaction systems described in step (2) (25 μ L):10 × PCR Buffer 2.5 μ L, dNTPS 0.5 μ L, Taq (5U/ μ l) 0.2 μ L, MgCl2The μ L of 1.5 μ L, NYCOI-F2 primer (10 μM), 1 μ L, NYCOI-R2 primer (10 μM) 1, DNA profiling (about 10ng/ μ l) 1 μ L, ddH2O supplies 25 μ L.
The method for identifying molecules flow chart of above-mentioned catfish is as shown in Figure 1.
Relative to prior art, the present invention has the advantages that:
(1) the invention provides a kind of DNA bar code standard detection sequence for being used to identify catfish.The DNA bar code mark The application of quasi- detection sequence, realize to less catfish can not precise Identification individual and the close individual of form using can The DNA molecular identification technology leaned on, fast and accurately identifies catfish;Overcome following deficiency of the prior art:To complete Body identification needs the professional very familiar to catfish form;It is effective to shorten compared with traditional Morphological Identification method Qualification time.
(2) the PCR reaction systems and reaction condition in the method for identifying molecules that the present invention is provided, repeatability is high, through multiple Test stability good.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the method for identifying molecules for the catfish that the present invention is provided.
Fig. 2 is the COI gene PCR amplification electroresis appraisal figures of the catfish musculature in embodiment 1;Wherein, swimming lane M For DNA standard molecular weight marks, swimming lane 1,2 is blank control, and swimming lane 3,4 is the COI genes of purpose fragment catfish musculature, inspection Go out band of the size for 170bp or so, swimming lane 5,6 is negative control.
Embodiment
Technical scheme is further illustrated below by embodiment.
Embodiment 1:
1st, collection, preservation and the processing of sample to be tested
The part musculature of clip catfish from immersed specimen, is stored in 95% alcohol and is deposited in -20 DEG C of refrigerators.
2nd, DNA is extracted
Biotech firm's kit method extracts the DNA in sample, is saved backup in -20 DEG C.
3rd, PCR primer is synthesized
This method chooses 1 pair of primer:
NYCOI-F2:5’-CCTCCTTCCTACTACTAT-3’(SEQ ID NO:2);
NYCOI-R2:5’-CCAAGAATGGAGGACACC-3’(SEQ ID NO:3);
4th, PCR reaction systems (25 μ L)
5th, PCR response procedures
After reaction terminates, PCR instrument is opened, the sample for completing amplification is taken out, in 4 DEG C of preservations
6th, PCR primer is detected
2 μ l PCR primers are taken, with 1.5% agarose gel electrophoresis (120V, 200mA, 25min), genegreen dyestuffs Dyeing.Gel imaging system detects that electrophoresis pattern is as shown in Fig. 2 the band that detection size is about 170 ± 10bp, can tentatively sentence It is probably catfish to determine sample to be tested.
7th, gene sequencing
The selection preferable PCR primer of effect is delivered to biotech firm and is sequenced after purification, and sequencing result shows its sequence such as SEQ ID NO:Shown in 4, SEQ ID NO:4 sequences are as follows:
CCTCCTTCCTACTACTATTAGCCTCCTCTGGAGTTGAAGCAGGAGCAGGAA CAGGGTGGACAGTTTACCCCCCTCTTGCAGGAAACCTTGCCCACGCAGGA GCTTCTGTAGATTTAACAATCTTTTCATTACATCTCGCAGGGGTGTCCTCCA TTCTTGG
Found through sequence analysis, SEQ ID NO:Nucleotide sequence shown in 4 and the nucleotides sequence as shown in SEQ ID NO.1 The homology of row is 99%, thus can determine that the sample to be tested is the tissue samples of catfish.
Embodiment 2:
2 groups of musculature samples are chosen from Fish Tissue sample (incomplete, it is impossible to carry out Biology identification), are stored in In 95% alcohol.The musculature of selection adheres to the fish of two groups of different cultivars separately, and one of which is catfish (10 samples), another Group is other kinds (10 samples), and sampling people carries out kind according to specifying information and records and number, and experiment operator is not Tested in the case of clear 2 groups of sample kinds ownership.Tested using experimental method same as Example 1, PCR productions Thing sequencing result shows that 10 samples of one of which are the tissue samples of catfish, and another group of 10 samples are the group of non-catfish Sample is knitted, experimental result is completely the same with sampling people's record information.
Above-described embodiment is better embodiment of the invention, but embodiments of the present invention are not by above-described embodiment Limitation, other any Spirit Essences without departing from the present invention and the change made under principle, modification, replacement, combine, simplification, Equivalent substitute mode is should be, is included within protection scope of the present invention.
SEQUENCE LISTING
<110>Zhenjiang Hua Da detection Co., Ltd
<120>A kind of catfish DNA bar code standard detection sequence and its application
<130> 2017
<160> 4
<170> PatentIn version 3.3
<210> 1
<211> 160
<212> DNA
<213>Catfish Silurus asotus
<221>Catfish DNA bar code standard detection sequence
<400> 1
cctccttcct actactatta gcctcctctg gagttgaagc aggagcagga acagggtgga 60
cagtttaccc ccctcttgca ggaaaccttg cccacgcagg agcttctgta gatttaacaa 120
tcttttcatt acatctcgca ggggtgtcct ccattcttgg 160
<210> 2
<211> 18
<212> DNA
<213>Artificial sequence
<221> NYCOI-F2
<400> 2
cctccttcct actactat 18
<210> 3
<211> 18
<212> DNA
<213>Artificial sequence
<221> NYCOI-R2
<400> 3
ccaagaatgg aggacacc 18
<210> 4
<211> 160
<212> DNA
<213>It is unknown
<221>Sample P CR amplified production sequences
<400> 4
cctccttcct actactatta gcctcctctg gagttgaagc aggagcagga acagggtgga 60
cagtttaccc ccctcttgca ggaaaccttg cccacgcagg agcttctgta gatttaacaa 120
tcttttcatt acatctcgca ggggtgtcct ccattcttgg 160

Claims (10)

1. a kind of catfish DNA bar code standard detection sequence, it is characterised in that its sequence such as SEQ ID NO:Shown in 1.
2. catfish DNA bar code standard detection sequence according to claim 1, it is characterised in that it is COI genes.
3. the primer pair for expanding the catfish DNA bar code standard detection sequence described in claim 1, it is characterised in that institute State the forward primer sequence such as SEQ ID NO of primer pair:Shown in 2, reverse primer is to sequence such as SEQ ID NO:Shown in 3.
4. the primer described in catfish DNA bar code standard detection sequence, claim 3 described in claim 1 or 2 is preparing use Application in the kit of identification catfish.
5. a kind of kit for being used to identify catfish, it is characterised in that it includes the primer pair described in claim 3.
6. kit according to claim 5, it is characterised in that the kit also includes round pcr common agents.
7. a kind of recombinant vector, it is characterised in that:Include the catfish DNA bar code standard detection sequence described in claim 1 or 2 Row.
8. primer pair, power described in catfish DNA bar code standard detection sequence as claimed in claim 1 or 2, claim 3 Profit requires application of the kit in identification catfish described in 4 or 5.
9. a kind of method for identifying molecules of catfish, it is characterised in that comprise the following steps:
(1) the separation and Extraction genomic DNA from tissue samples to be identified;
(2) as template, using pair of primers, expanded using genomic DNA obtained by step (1) by PCR;
The forward primer sequence and reverse primer sequences of the primer are respectively such as SEQ ID NO:2 and SEQ ID NO:Shown in 3;
(3) PCR amplification product obtained by step (2) is separated with agarose gel electrophoresis, produced according to amplification The size result of determination of thing, if energy specific amplification goes out 170 ± 10bp band, is carried out sequencing analysis;
(4) according to sequencing result, if with such as SEQ ID NO:The homology of nucleotide sequence shown in 1 is more than 98%, i.e., It can determine whether that this to be identified is organized as catfish.
10. the method for identifying molecules of catfish according to claim 9, it is characterised in that polymerase chain described in step (2) Formula reaction condition be:95 DEG C of denaturation 5min;94 DEG C, 30s, 56 DEG C, 30s, 72 DEG C, 1min, 40 circulations;72 DEG C of extensions 10min。
CN201710497318.9A 2017-06-27 2017-06-27 A kind of catfish DNA bar code standard detection sequence and its application Pending CN107058603A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107541521A (en) * 2017-10-19 2018-01-05 中国科学院昆明植物研究所 A kind of authentication method of radix coniti coreani DNA bar code and radix coniti coreani based on big data
CN107841563A (en) * 2017-11-22 2018-03-27 镇江华大检测有限公司 Differentiate the molecular specificity labeled primers and method of catfish
CN107841564A (en) * 2017-11-22 2018-03-27 镇江华大检测有限公司 Differentiate the molecular specificity primer and method of the Changjiang river original inhabitants catfish
CN110438240A (en) * 2019-07-17 2019-11-12 江汉大学 A kind of pseudorasbora parva DNA bar code sequence and its application

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CN105821054A (en) * 2015-01-05 2016-08-03 深圳华大基因研究院 Sinibrama taeniatus DNA barcode standard check sequence and application thereof
CN105986021A (en) * 2015-02-11 2016-10-05 深圳华大基因研究院 DNA barcoding standard detection sequence for acrossocheilus beijiangensis and applications of DNA barcoding standard detection sequence

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Publication number Priority date Publication date Assignee Title
CN104073559A (en) * 2014-06-25 2014-10-01 甘肃农业大学 Identifying method for catfish based on DNA (deoxyribonucleic acid) Barcoding and raw meat products thereof and identifying kit
CN105821054A (en) * 2015-01-05 2016-08-03 深圳华大基因研究院 Sinibrama taeniatus DNA barcode standard check sequence and application thereof
CN105986021A (en) * 2015-02-11 2016-10-05 深圳华大基因研究院 DNA barcoding standard detection sequence for acrossocheilus beijiangensis and applications of DNA barcoding standard detection sequence

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107541521A (en) * 2017-10-19 2018-01-05 中国科学院昆明植物研究所 A kind of authentication method of radix coniti coreani DNA bar code and radix coniti coreani based on big data
CN107841563A (en) * 2017-11-22 2018-03-27 镇江华大检测有限公司 Differentiate the molecular specificity labeled primers and method of catfish
CN107841564A (en) * 2017-11-22 2018-03-27 镇江华大检测有限公司 Differentiate the molecular specificity primer and method of the Changjiang river original inhabitants catfish
CN110438240A (en) * 2019-07-17 2019-11-12 江汉大学 A kind of pseudorasbora parva DNA bar code sequence and its application

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Application publication date: 20170818