CN1944667A - Primer sequence and detecting reagent kit for detecting vibrio alginolyticus - Google Patents
Primer sequence and detecting reagent kit for detecting vibrio alginolyticus Download PDFInfo
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- CN1944667A CN1944667A CNA2006100161704A CN200610016170A CN1944667A CN 1944667 A CN1944667 A CN 1944667A CN A2006100161704 A CNA2006100161704 A CN A2006100161704A CN 200610016170 A CN200610016170 A CN 200610016170A CN 1944667 A CN1944667 A CN 1944667A
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Abstract
The present invention discloses primer sequence and detecting reagent kit for detecting Vibrio alginolyticus. The detecting reagent kit contains the following reagents: mixture of nutrient broth and aged sea water through autoclaving; mixture of PCR buffer, Taq DNA polymerase and sterile double distilled water; mixture of nucleotide sequence of SEQ ID No. 1 and SEQ ID No. 2, dNTPs and MgCl2; genome total DNA of Vibrio alginolyticus; sterile double distilled water; TBE electrophoretic buffer containing Tris-boric acid and EDTA; and agarose containing ethidium bromide. The present invention has primer sequence with optimized PCR condition and system, and the PCR detecting method for detecting Vibrio alginolyticus and the detecting reagent kit are simple, fast, sensitive and specific.
Description
Technical field
The present invention relates to the dna sequence dna in the biotechnology, the test kit that uses this sequence that a kind of bacterium is detected particularly relates to a kind of primer sequence and detection kit that is used to detect vibrio alginolyticus.
Background technology
Vibrio alginolyticus is the important pathogen of coastland food poisoning and being dispersed in property diarrhoea, also be the pathogenic bacterium of multiple hydrocoles simultaneously, all can be caused a disease as Penaeus vannamei, Epinephelus coioide, salmon point cabrilla, shellfish, large yellow croaker, yellowfin porgy, Young Crab etc., and produce different illnesss by the vibrio alginolyticus infection.Particularly infect caused seawater industrialized culture turbot and brown lefteye flounder ascites disease by vibrio alginolyticus in recent years, and caused enormous economic loss for seawater industrialized culture enterprise.Simultaneously, vibrio alginolyticus can infect human by sea-food, causes acute intestinal disorders.
Treatment to bacteriosis at present depends on microbiotic mostly, and antibiotic abuse not only makes pathogenic bacteria produce resistance, and the health to the people has also caused certain pressure simultaneously.Setting up method accurate, the rapid detection pathogenic bacteria, make up effective forecasting and warning mechanism, is very necessary and urgent present.
Evaluation to vibrio alginolyticus now mainly depends on conventional Physiology and biochemistry method, consuming time, the effort of this method, and the vibrios kind is many, and physiological and biochemical property is similar, causes the biochemical reaction result to be difficult to judge, thereby has influenced the accuracy rate of Bacteria Identification.
Polymerase chain reaction (Polymerase chain reaction is called for short PCR) technology for detection is highly sensitive, high specificity, and round of visits is short, operates easy relatively.But still useless this kind method is to the report of vibrio alginolyticus quick diagnosis and detection at present.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of primer sequence that is used to detect vibrio alginolyticus is provided.
Second purpose of the present invention provides a kind of to the vibrio alginolyticus tracking monitor in seawater industrialized culture aquatic economic animal and the aquaculture water, and has vibrio alginolyticus detection kit easy, sensitive, special, quick characteristics
Technical scheme of the present invention is summarized as follows:
A kind of primer sequence that is used to detect vibrio alginolyticus, it is made up of upstream primer and downstream primer, described upstream primer has the described nucleotide sequence of SEQ ID No1 in the sequence table, and described downstream primer has the described nucleotide sequence of SEQ ID No2 in the sequence table.
A kind of vibrio alginolyticus detection kit, form by following reagent:
Reagent A:, make through the 0.1-0.5Kpa autoclaving with the old sea water mixing of common nutrient broth of 0.5-2.0g and 50mL;
Reagent B: PCR reaction buffer 1.5-5.0 μ L, Taq archaeal dna polymerase 1-3U, the sterilization distilled water 17-19 μ L of 10 times of concentration are mixed and made into;
Reagent C: with the described nucleotide sequence 0.2-0.8 of 10 μ M SEQ ID No1 μ L, the described nucleotide sequence 0.2-0.8 of 10 μ M SEQ ID No2 μ L, 10mM dNTPs 0.2-0.8 μ L, 25mM MgCl
21.0-4.0 μ L is mixed and made into;
The genome DNA of the vibrio alginolyticus of reagent D: 20-100ng/mL;
Reagent E: sterilization distilled water;
Reagent F: get 20 times of TBE electrophoretic buffers of 50mL, make and wherein contain 0.09mol hydroxymethyl aminomethane-boric acid, 2mmol ethylenediamine tetraacetic acid (EDTA) (EDTA) is made;
Reagent G:0.3-0.6g agarose makes wherein to contain ethidium bromide 15-30 μ g.
Preferably: described reagent A is: with the old sea water mixing of common nutrient broth of 1.25g and 50mL, make through the 0.1-0.5Kpa autoclaving; Described reagent B is: PCR reaction buffer 2.5 μ L, Taq archaeal dna polymerase 1.25U, the sterilization distilled water 17.25 μ L of 10 times of concentration are mixed and made into; Described reagent C is: with the described nucleotide sequence 0.5 μ L of 10 μ M SEQ ID No1, and the described nucleotide sequence 0.5 μ L of 10 μ M SEQ ID No2,10mM dNTPs 0.5 μ L, 25mM MgCl
21.5 μ L is mixed and made into; Described reagent D is: the genome DNA of the vibrio alginolyticus of 40-60ng/mL; Described reagent G is: the 0.3g agarose makes wherein to contain ethidium bromide 20 μ g.
The genome DNA of described vibrio alginolyticus is extracted with following method: be taken at the vibrio alginolyticus of cultivating 18-24h on the 2216E flat board, distilled water with sterilization is made bacteria suspension, adopts bacterial genomes DNA extraction test kit to extract the genome DNA of vibrio alginolyticus.Advantage of the present invention:
Utilize the gene conserved sequence of vibrio alginolyticus to design a pair of primer, optimize PCR reaction conditions and reaction system, set up the PCR detection method that detects vibrio alginolyticus, assemble out easy, quick, sensitive, special a kind of vibrio alginolyticus detection kit on this basis, this test kit can be used for the tracking monitor to the bacterium in seawater industrialized culture aquatic economic animal and the aquaculture water, also can be used for simultaneously clinical detection, have very high practical value sea-food and human diarrhoea.
Description of drawings
Fig. 1 is for detecting vibrio alginolyticus electrophoresis result figure.
Embodiment
The present invention is further illustrated below in conjunction with specific embodiment.
Embodiment 1
A kind of primer sequence that is used to detect vibrio alginolyticus, it is made up of upstream primer and downstream primer, described upstream primer has the described nucleotide sequence of SEQ ID No1 in the sequence table, and described downstream primer has the described nucleotide sequence of SEQ ID No2 in the sequence table.
Sequence table
SEQ?ID?No1：
5’--AAGAGGGTTACTTTCATCAG-3
SEQ?ID?No2：
5’--CGTGTTTCCACCAGCAT-3’
Embodiment 2
A kind of vibrio alginolyticus detection kit, form by following reagent:
Reagent A:, make through the 0.3Kpa autoclaving with the old sea water mixing of common nutrient broth of 1.25g and 50mL;
Reagent B: PCR reaction buffer 2.5 μ L, Taq archaeal dna polymerase 1.25U, the sterilization distilled water 17.25 μ L of 10 times of concentration are mixed and made into;
Reagent C: with the described nucleotide sequence 0.5 μ L of 10 μ M SEQ ID No1, the described nucleotide sequence 0.5 μ L of 10 μ M SEQ ID No2,10mM dNTPs 0.5 μ L, 25mM MgCl
21.5 μ L is mixed and made into;
The genome DNA of the vibrio alginolyticus of reagent D: 60ng/mL;
Reagent E: sterilization distilled water;
Reagent F: get 20 times of TBE electrophoretic buffers of 50mL, make and wherein contain 0.09mol hydroxymethyl aminomethane-boric acid (Tris-boric acid), 2mmol ethylenediamine tetraacetic acid (EDTA) (EDTA) is made;
Reagent G:0.3g agarose makes wherein to contain ethidium bromide 20 μ g;
Sterilization toothpick one bag.
Cardinal principle of the present invention is:
Reagent A is cultivated in advance to the vibrio alginolyticus in the sample, pass through centrifugal then, resuspended, step such as boil and discharge the vibrio alginolyticus genome DNA, reagent B and reagent C contain polymerase chain reaction reagent, reagent B and reagent C are mixed in proportion, by adding the vibrio alginolyticus genome DNA, a certain gene of vibrio alginolyticus are carried out specific amplification.Because our designed this is peculiar by vibrio alginolyticus to primer, if contain vibrio alginolyticus in the sample, after increasing through polymerase chain reaction, nucleic acid concentration can reach 10
8More than the mol, behind agarose gel electrophoresis and ethidium bromide staining, in uv analyzer, can detect the purpose band of certain molecular weight.If there is not vibrio alginolyticus, the purpose band of the same molecular weight that then can not increase.
Embodiment 3
A kind of vibrio alginolyticus detection kit, form by following reagent:
Reagent A:, make through the 0.1Kpa autoclaving with the old sea water mixing of common nutrient broth of 0.5g and 50mL;
Reagent B: PCR reaction buffer 1.5 μ L, Taq archaeal dna polymerase 1U, the sterilization distilled water 17 μ L of 10 times of concentration are mixed and made into;
Reagent C: with the described nucleotide sequence 0.2 μ L of 10 μ M SEQ ID No1, the described nucleotide sequence 0.2 μ L of 10 μ M SEQ ID No2,10mM dNTPs 0.2 μ L, 25mM MgCl
21.0 μ L is mixed and made into;
The genome DNA of the vibrio alginolyticus of reagent D: 20ng/mL;
Reagent E: sterilization distilled water (redistilled water);
Reagent F: get 20 times of TBE electrophoretic buffers of 50mL, make and wherein contain 0.09mol hydroxymethyl aminomethane-boric acid, 2mmol EDTA makes;
Reagent G:0.3g agarose makes wherein to contain ethidium bromide 15 μ g;
Sterilization toothpick one bag.
Embodiment 4
A kind of vibrio alginolyticus detection kit, form by following reagent:
Reagent A:, make through the 0.5Kpa autoclaving with the old sea water mixing of common nutrient broth of 2.0g and 50mL;
Reagent B: PCR reaction buffer 5.0 μ L, Taq archaeal dna polymerase 3U, the sterilization distilled water 19 μ L of 10 times of concentration are mixed and made into;
Reagent C: with the described nucleotide sequence 0.8 μ L of 10 μ M SEQ ID No1, the described nucleotide sequence 0.8 μ L of 10 μ M SEQ ID No2,10mM dNTPs 0.8 μ L, 25mM MgCl
24.0 μ L is mixed and made into;
The genome DNA of the vibrio alginolyticus of reagent D: 100ng/mL;
Reagent E: sterilization distilled water;
Reagent F: get 20 times of TBE electrophoretic buffers of 50mL, make and wherein contain 0.09mol hydroxymethyl aminomethane-boric acid, 2mmol EDTA makes;
Reagent G:0.6g agarose makes wherein to contain ethidium bromide 30 μ g;
Sterilization toothpick one bag.
Embodiment 5
A kind of vibrio alginolyticus detection kit, form by following reagent:
Reagent A:, make through the 0.2Kpa autoclaving with the old sea water mixing of common nutrient broth of 1.5g and 50mL;
Reagent B: PCR reaction buffer 2.5 μ L, Taq archaeal dna polymerase 2U, the sterilization distilled water 18 μ L of 10 times of concentration are mixed and made into;
Reagent C: with the described nucleotide sequence 0.5 μ L of 10 μ M SEQ ID No1, the described nucleotide sequence 0.5 μ L of 10 μ M SEQ ID No2,10mM dNTPs 0.5 μ L, 25mM MgCl
23.0 μ L is mixed and made into;
The genome DNA of the vibrio alginolyticus of reagent D: 40ng/mL;
Reagent E: sterilization distilled water;
Reagent F: get 20 times of TBE electrophoretic buffers of 50mL, make and wherein contain 0.09mol hydroxymethyl aminomethane-boric acid, 2mmol EDTA makes;
Reagent G:0.4g agarose makes wherein to contain ethidium bromide 20 μ g;
Sterilization toothpick one bag.
Embodiment 6
The genome DNA of described vibrio alginolyticus is extracted with following method: be taken at the vibrio alginolyticus of cultivating 18 hours (also can be to cultivate 20 hours or 24 hours) on the 2216E flat board, distilled water with sterilization is made bacteria suspension, adopt bacterial genomes DNA extraction test kit (Bacterial Genomic DNA Mini-prep Kit) to extract the genome DNA of vibrio alginolyticus, as positive control.Bacterial genomes DNA extraction test kit (Bacterial Genomic DNA Mini-prep Kit) is that the sky is Time Inc.'s product.Vibrio alginolyticus is purchased the institute of microbiology in the Chinese Academy of Sciences.
Embodiment 7
As follows with a kind of vibrio alginolyticus detection kit detection method of the present invention:
1, sample preparation: get 0.1-0.3g or 100-300 μ L sample, add 800 μ L reagent A, fully smash sample tissue to pieces, 37 ℃ of 8-12h, the centrifugal 1min of 3000rpm/min with the toothpick of sterilization;
2, get 600 μ L supernatants, the centrifugal 5min of 13000rpm/min abandons supernatant;
3, add 20 μ L reagent E, stir precipitation gently with application of sample rifle head it is fully suspended;
4, handle 15min for 95 ℃, centrifugal slightly, supernatant is as the extracting solution of DNA of bacteria;
5, pcr amplification: get 18.1 μ L reagent B and mix with 4.9 μ L reagent C, add 2 μ L DNA of bacteria extracting solutions, get 2 μ L reagent D and reagent E simultaneously respectively and add respectively in two other 18.1 μ L reagent B and the 4.9 μ L reagent C blended PCR reaction tubess, respectively as positive control and blank, on the PCR instrument, increase, reaction conditions is: 94 ℃ of pre-sex change of 2min, 94 ℃ of 40sec, 58 ℃ of 45sec, 72 ℃ of 1min, 29 circulations, 72 ℃ of 10min, 4 ℃ of preservations;
6, after reaction finishes, get reagent F and do 40 times of dilutions, reagent G is poured in the triangular flask of 100mL, add the reagent F after diluting with distilled water, heating, limpid until solution, the glue groove is poured in cooling into slightly;
7, get 5-10 μ L PCR reaction product and add 2 μ L sample-loading buffers, behind 1% agarose gel electrophoresis 30-35min, on ultraviolet device, observe, if the reaction band occurs at the 485bp place, it then is the vibrio alginolyticus positive, if no band is negative, the reaction band should appear at the 485bp place in the sun mark, and blank should reactionless band.
Among Fig. 1 M be DL2000 Marker (molecular weight is followed successively by 2000bp from top to bottom, 1000bp, 750bp, 500bp, 250bp, 100bp); 1 is blank; 2 positive samples; 3 positive contrasts.
Claims (4)
1. primer sequence that is used to detect vibrio alginolyticus, it is characterized in that it is made up of upstream primer and downstream primer, described upstream primer has the described nucleotide sequence of SEQ ID No1 in the sequence table, and described downstream primer has the described nucleotide sequence of SEQ ID No2.
2. vibrio alginolyticus detection kit is characterized in that being made up of following reagent:
Reagent A:, make through the 0.1-0.5Kpa autoclaving with the old sea water mixing of common nutrient broth of 0.5-2.0g and 50mL;
Reagent B: PCR reaction buffer 1.5-5.0 μ L, Taq archaeal dna polymerase 1-3U, the sterilization distilled water 17-19 μ L of 10 times of concentration are mixed and made into;
Reagent C: with the described nucleotide sequence 0.2-0.8 of 10 μ M SEQ ID No1 μ L, the described nucleotide sequence 0.2-0.8 of 10 μ M SEQ ID No2 μ L, 10mM dNTPs 0.2-0.8 μ L, 25mM MgCl
21.0-4.0 μ L is mixed and made into;
The genome DNA of the vibrio alginolyticus of reagent D: 20-100ng/mL;
Reagent E: sterilization distilled water;
Reagent F: get 20 times of TBE electrophoretic buffers of 50mL, make and wherein contain 0.09mol hydroxymethyl aminomethane-boric acid, the 2mmol ethylenediamine tetraacetic acid (EDTA) is made;
Reagent G:0.3-0.6g agarose makes wherein to contain ethidium bromide 15-30 μ g.
3. a kind of vibrio alginolyticus detection kit according to claim 2 is characterized in that described reagent A is:, make through the 0.1-0.5Kpa autoclaving the old sea water mixing of common nutrient broth of 1.25g and 50mL; Described reagent B is: PCR reaction buffer 2.5 μ L, Taq archaeal dna polymerase 1.25U, the sterilization distilled water 17.25 μ L of 10 times of concentration are mixed and made into; Described reagent C is: with the described nucleotide sequence 0.5 μ L of 10 μ M SEQ ID No1, and the described nucleotide sequence 0.5 μ L of 10 μ M SEQ ID No2,10mM dNTPs 0.5 μ L, 25mM MgCl
21.5 μ L is mixed and made into; Described reagent D is: the genome DNA of the vibrio alginolyticus of 40-60ng/mL; Described reagent G is: the 0.3g agarose makes wherein to contain ethidium bromide 20 μ g.
4. according to claim 2 or 3 described a kind of vibrio alginolyticus detection kit, the genome DNA that it is characterized in that described vibrio alginolyticus is extracted with following method: be taken at the vibrio alginolyticus of cultivating 18-24h on the 2216E flat board, distilled water with sterilization is made bacteria suspension, adopts bacterial genomes DNA extraction test kit to extract the genome DNA of vibrio alginolyticus.
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| CNB2006100161704A CN100419087C (en) | 2006-10-19 | 2006-10-19 | Primer sequence and detecting reagent kit for detecting vibrio alginolyticus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928769B (en) * | 2009-09-29 | 2012-07-04 | 大连水产学院 | PCR specific amplification primer for quick detection of vibrio alginnolyficus based on SCAR molecular marker and detection kit |
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| CN1142291C (en) * | 2001-12-27 | 2004-03-17 | 中国科学院南海海洋研究所 | Reagent kit and method for quickly detecting alga-dissolving vibrio |
| CN1232655C (en) * | 2004-02-26 | 2005-12-21 | 中山大学 | Marine animal and human pathogenic bacteria-bacteriolysis vibrion gene diagnostic reagent kit and detecting method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101928769B (en) * | 2009-09-29 | 2012-07-04 | 大连水产学院 | PCR specific amplification primer for quick detection of vibrio alginnolyficus based on SCAR molecular marker and detection kit |
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