CN1995372A - Reagent kit and detection method for quickly detecting shark vibrio - Google Patents
Reagent kit and detection method for quickly detecting shark vibrio Download PDFInfo
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- CN1995372A CN1995372A CN 200610123591 CN200610123591A CN1995372A CN 1995372 A CN1995372 A CN 1995372A CN 200610123591 CN200610123591 CN 200610123591 CN 200610123591 A CN200610123591 A CN 200610123591A CN 1995372 A CN1995372 A CN 1995372A
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- vibrio
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- shark vibrio
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Abstract
The invention discloses an agent box and detecting method of shark vibrio, which comprises the following parts: enriched medium as agent A, polyase chain reaction with preblended agent B and agent C, electrophoretic and color agent with agent D, agent E and agent F. The primer doesn't augument signal for detected sample without shark vibrio, which possesses excellent atopy to monitor pathogenic agent in the breeding water.
Description
Technical field
The present invention relates to a kind of test kit of rapid detection shark vibrio, and the method for using this test kit rapid detection shark vibrio.
Background technology
Vibrios is the main pathogen of marine cultured animal, and it has been established that, and shark vibrio is one of cause of disease that causes the Crassostrea rivularis mass mortality, also can cause the marine fish disease, and this bacterium also is present in the natural sea-water.Shark vibrio in monitoring cultivated animals and the seawater is to prevent and treat it to cause the important measures of disease.The technology of identifying vibrios at present has: 1, Jing Dian Physiology and biochemistry authentication method, and this method is loaded down with trivial details, consuming time and require operator that good professional attainment is arranged; 2, the fast automatic identification systems of bacterium, this method need expensive plant and instrument and the operator that are skilled in technique; 3, based on the detection technique of nucleic acid, comprise dna probe and round pcr (polymerase chain reaction technology), above-mentioned relatively detection technique has characteristics such as quick, simple and direct, sensitivity, but yet there are no round pcr and the detection kit patent that detects shark vibrio.
Summary of the invention
In order to solve the deficiencies in the prior art part, primary and foremost purpose of the present invention is to provide a kind of test kit of rapid detection shark vibrio, a pair of shark vibrio Auele Specific Primer VcS and VcA particularly are provided, but use in this test kit rapid detection several samples whether have shark vibrio, thereby provide scientific basis for healthy aquaculture.The present invention has set up rapid sensitive and has accurately detected the PCR detection technique of shark vibrio and developed detection kit, with easy in satisfy producing, needs fast and accurately.
Another object of the present invention is to provide above-mentioned detection kit to detect the method for shark vibrio.
The objective of the invention is to be realized by following technical proposals: a kind of test kit of rapid detection shark vibrio comprises enrichment medium, polymerase chain reaction reagent, electrophoresis and colouring reagents:
(a) reagent A is an enrichment medium: contain tryptone, and extractum carnis, yeast extract and agar powder, its weight ratio is 5: 3: 1: 18.
(b) polymerase chain reaction reagent: comprise reaction premix reagent B and reagent C.
Reagent B contains 10 times of polymerase chain reaction damping fluids and (contains MgCl
215mM), special primer is to VcS and VcA, dNTP (mixtures of four kinds of deoxynucleotides), bovin serum albumin and sterilization distilled water, content is respectively 2.5~5.0 μ l, 0.5~1.0 μ l (10 μ M), 0.5~1.0 μ l (10 μ M), 0.5~1.0 μ l (10 μ Meach), 0.5~1.0 μ l (5mg/ml) and 19.375~38.75 μ l.
Reagent C: Taq enzyme, 0.125~0.25 μ l (5 unit/μ l).
(c) electrophoresis and colouring reagents comprise reagent D, reagent E and reagent F.
Reagent D: be 50 times of TAE (electrophoretic buffer), contain trihydroxy methyl aminomethane-acetate and ethylenediamine tetraacetic acid (EDTA), concentration is respectively 0.04M and 0.001M;
Reagent E: be gel loading buffer, contain w/v and be 40% sucrose and 0.25% tetrabromophenol sulfonphthalein and the blue or green FF of dimethylbenzene;
Reagent F:0.8~2% (W/V) agarose+0.5~1 μ g/ml ethidium bromide.
In order to realize the present invention better, described special primer is as follows to VcS and VcA:
Special primer VcS refers to 5 ' ATCCGGCAATGCAGTGTTC 3 ';
Special primer VcA refers to 5 ' ACCTACCCGCCTCCTTACGC 3 '.
The preferred group of described polymerase chain reaction reagent becomes: reagent B:5.0 μ l10 * PCR Buffer, 1.0 μ l VcS, 1.0 μ l VcA, 1.0 μ l dNTP (10mM each), 1.0 μ l BSA, 38.75 μ l ddH
2O; Reagent C: 0.25 μ l Taq enzyme.
Use the method for the test kit detection shark vibrio of rapid detection shark vibrio, comprise the steps:
(a) increase bacterium: get the 2.7g reagent A and add filtering sea to 100ml, transferring pH value is to make the microbial culture flat board according to a conventional method behind 7.2~7.4,121 ℃ of sterilization 15~20min.
0.1~0.5 gram sample (aquatic animal tissue to be checked or water sample etc. will be avoided polluting) is got in aseptic technique, and homogenate is coated after (when needing) with the made flat board of reagent A enrichment medium, cultivates 12~18 hours for 30 ℃.
(b) pcr amplification: various lawns are got the template of 1~2 μ l as pcr amplification on the picking flat board behind the resuspended mixing in 100 μ l sterile purified waters; Getting 23.875~47.75 μ l reagent B mixes with 0.125~0.25 μ l reagent C; On thermal cycler by 95 ℃ of cracking bacteriums and unwind 5 minutes; Use 94 ℃ of sex change 30~60 seconds then, in 55~58 ℃ of 30~60 seconds of renaturation, 72 ℃ were extended for 30~90 seconds, so circulated 25~35 times, at last 72 ℃ of insulations 8~12 minutes, the specific fragment of shark vibrio were increased to 10
8More than the mol.
(c) electrophoresis and color developing detection: get the sample after 5~10 μ l increase, mix with 1~2 μ l reagent F (gel loading buffer), W/V is 0.8~1.2% agarose electrophoresis and colour developing, under UV-light, detect the band whether one 470 nucleotide pair is arranged, if the band of a 470bp is arranged, contain shark vibrio in the interpret sample, otherwise then do not have shark vibrio.
Cardinal principle of the present invention is: reagent B and C are polymerase chain reaction reagent, by the compositions such as hot polymerization synthase in contained shark vibrio dna fragmentation special primer and the reagent C among the reagent B, the DNA that sample is discharged carries out specific amplification, because the designed primer of the present invention is the shark vibrio Auele Specific Primer, therefore, if contain shark vibrio in the sample, its DNA specific fragment is after the process amplification so, and concentration will reach 10
8More than the mol (mol), like this, behind electrophoresis and ethidium bromide staining, UV-light detects the purpose band that just can detect certain molecular weight.If there is not shark vibrio to have the purpose band of the same molecular weight that then can not increase.
The present invention compares with other vibrios cause of disease detection technique, has following advantage and beneficial effect:
(1) the inventive method is easy to detect, has saved the step that will extract DNA of bacteria in the usual method;
(2) the inventive method detection sensitivity is high, detects lower limit and is low to moderate 10~10
2Individual bacterium;
(3) primer provided by the invention does not have amplified signal for the detection sample standard deviation that does not contain shark vibrio, illustrates that it has good specificity;
(4) the present invention can be applied to the detection of several samples, can detect cultivated animals and be subjected to the shark vibrio infection conditions, also can monitor shark vibrio in the aquaculture water environment.
Description of drawings
Fig. 1 is a shark vibrio quick detection kit characteristic primer specificity check experimental result picture.
Fig. 2 is shark vibrio quick detection kit sensitivity experiment figure as a result.
Embodiment
To explanation of the present invention, but embodiments of the present invention are not limited thereto following embodiment to further.
Embodiment 1 makes the test kit of rapid detection vibrio alginolyticus by following prescription:
(a) reagent A (enrichment medium): contain tryptone, extractum carnis, yeast extract and agar powder, its weight ratio is 5: 3: 1: 18.
(b) polymerase chain reaction (25 μ l system) reagent: comprise reaction premix reagent B and reagent C,
Reagent B contains 10 times of polymerase chain reaction damping fluids and (contains MgCl
215mM), special primer is to VcS and VcA, dNTP (mixtures of four kinds of deoxynucleotides), bovin serum albumin and sterilization distilled water, content is respectively 2.5 μ l, 0.5 μ l (10 μ M), 0.5 μ l (10 μ M), 0.5 μ l (10 μ M each), 0.5 μ l (5mg/ml) and 19.375 μ l.
Reagent C: Taq enzyme, 0.125 μ l (5 unit/μ l).
(c) electrophoresis and colouring reagents comprise reagent D, reagent E and reagent F.
Reagent D: be 50 times of TAE (electrophoretic buffer), contain trihydroxy methyl aminomethane-acetate and ethylenediamine tetraacetic acid (EDTA), concentration is respectively 0.04M and 0.001M;
Reagent E: be gel loading buffer, contain w/v and be 40% sucrose and 0.25% tetrabromophenol sulfonphthalein and the blue or green FF of dimethylbenzene;
Reagent F:1% (W/V) agarose+0.5 μ g/ml ethidium bromide.
Method according to following program rapid detection shark vibrio:
(a) sample increases the bacterium processing: get the 2.7g reagent A and add filtering sea to 100ml, transferring pH value is to make the microbial culture flat board according to a conventional method behind 7.2~7.4,121 ℃ of sterilization 20min.
Aseptic technique is got Crassostrea rivularis digestion coecum and is organized about 0.1 gram, coats made flat board after the homogenate, cultivates 16 hours for 30 ℃;
(b) pcr amplification: get 23.875 μ l reagent B and mix with 0.125 μ l reagent C; With various lawns resuspended mixing in 100 μ l sterile purified waters on the sterilization toothpick picking flat board, get 1 μ l and add in the above-mentioned mixed solution as pcr template; On thermal cycler,, by 95 ℃ of cracking bacteriums and unwind 5 minutes, use 94 ℃ of sex change 20 seconds then to increasing, 57 ℃ of renaturation 40 seconds, 72 ℃ were extended for 45 seconds, so circulated 30 times, at last 72 ℃ of insulations 10 minutes.
(c) electrophoresis and color developing detection: get the sample after 5 μ l increase, mix with 1 μ l reagent F (gel loading buffer), 1% agarose electrophoresis and colour developing, under UV-light, detect the band whether one 470 nucleotide pair is arranged, if the band of a 470bp is arranged, contain shark vibrio in the interpret sample, otherwise then do not have.
Embodiment 2 makes the test kit of rapid detection vibrio alginolyticus by following prescription:
(a) reagent A (enrichment medium): contain tryptone, extractum carnis, yeast extract and agar powder, its weight ratio is 5: 3: 1: 18.
(b) polymerase chain reaction (50 μ l system) reagent: comprise reaction premix reagent B and reagent C.
Reagent B contains 10 times of polymerase chain reaction damping fluids and (contains MgCl
215mM), special primer is to VcS and VcA, dNTP (mixtures of four kinds of deoxynucleotides), bovin serum albumin and sterilization distilled water, content is respectively 5.0 μ l, 1.0 μ l (10 μ M), 1.0 μ l (10 μ M), 1.0 μ l (10 μ M each), 1.0 μ l (5mg/ml) and 38.75 μ l.
Reagent C: Taq enzyme, 0.25 μ l (5 unit/μ l).
(c) electrophoresis and colouring reagents comprise reagent D, reagent E and reagent F.
Reagent D: be 50 times of TAE (electrophoretic buffer), contain trihydroxy methyl aminomethane-acetate and ethylenediamine tetraacetic acid (EDTA), concentration is respectively 0.04M and 0.001M;
Reagent E: be gel loading buffer, contain w/v and be 40% sucrose and 0.25% tetrabromophenol sulfonphthalein and the blue or green FF of dimethylbenzene;
Reagent F:1% (W/V) agarose+0.5 μ g/ml ethidium bromide.
Method according to following program rapid detection shark vibrio:
(a) sample increases the bacterium processing: get the 2.7g reagent A and add filtering sea to 1L, transferring pH value is to make the microbial culture flat board according to a conventional method behind 7.2~7.4,121 ℃ of sterilization 20min.
About 0.1 gram of oyster blood is got in aseptic technique, coats made flat board, cultivates 16 hours for 30 ℃.
(b) pcr amplification: get 47.75 μ l reagent B and mix with 0.25 μ l reagent C; With various lawns resuspended mixing in 100 μ l sterile purified waters on the sterilization toothpick picking flat board, get 2 μ l and add in the above-mentioned mixed solution as pcr template; On thermal cycler by 95 ℃ of cracking bacteriums and unwind 5 minutes; Use 94 ℃ of sex change 30 seconds then, 57 ℃ of renaturation 45 seconds, 72 ℃ were extended for 60 seconds, so circulated 30 times, at last 72 ℃ of insulations 10 minutes.
(c) electrophoresis and color developing detection: get the sample after 8 μ l increase, with 2 μ l reagent F (gel loading buffer), 1% agarose electrophoresis and colour developing, under UV-light, detect the band whether one 470 nucleotide pair is arranged, if the band of a 470bp is arranged, contain shark vibrio in the interpret sample, otherwise then do not have.
As shown in Figure 1, be shark vibrio quick detection kit characteristic primer specificity check experimental result, M:DNA marker wherein, 1: Vibrio parahaemolyticus, 2: Vibrio harveyi, 3,4, the vibrio alginolyticus of 5: three strain different sourcess, 6: shark vibrio, 7: vibrio proteolyticus, 8: need the sodium vibrios, 9: Vibrio campbellii, 10: Vibrio splindidus, 11: vibrio fluvialis, 12: Vibrio vulnificus, Fig. 1 shows that shark vibrio quick detection kit characteristic primer can only go out the purpose fragment to the shark vibrio pcr amplification, and its specificity is very high.
As shown in Figure 2, be shark vibrio quick detection kit sensitivity experiment result, M:DNAmarker wherein, 1~8:25 μ l system PCR result, every pipe adds template amount (shark vibrio number/pipe, colony counting method); 1:5 * 10
7, 2:5 * 10
6, 3:5 * 10
5, 4:5 * 10
4, 5:5 * 10
3, 6:5 * 10
2, 7:5 * 10
1, 8:5 * 10
0, Fig. 2 shows that the shark vibrio quick detection kit is 10
1Level the time just can detect the result, as long as contain several shark vibrios as the bacterium step 1 in getting test sample and just can detect in conjunction with increasing.
SEQUENCE?LISTING
<110〉Ji'nan University
<120〉test kit of rapid detection shark vibrio and detection method thereof
<130>20
<160>2
<170>PatentIn?version?3.2
<210>1
<211>19
<212>DNA
<213>Artficial?sequence
<220>
<223〉shark vibrio special primer VcS
<400>1
atccggcaat?gcagtgttc 19
<210>2
<211>20
<212>DNA
<213>Artificial?sequence
<220>
<223〉shark vibrio special primer VcA
<400>2
acctacccgc?ctccttacgc 20
Claims (4)
1, a kind of test kit of rapid detection shark vibrio is characterized in that comprising enrichment medium, polymerase chain reaction reagent, electrophoresis and colouring reagents:
(a) enrichment medium is a reagent A: contain tryptone, and extractum carnis, yeast extract and agar powder, its weight ratio is 5: 3: 1: 18;
(b) polymerase chain reaction reagent: comprise reaction premix reagent B and reagent C;
Reagent B contains 10 times of polymerase chain reaction damping fluids, special primer to VcS and VcA, dNTP, bovin serum albumin and sterilization distilled water, and content is respectively 2.5~5.0 μ l, 0.5~1.0 μ l, 0.5~1.0 μ l, 0.5~1.0 μ l, 0.5~1.0 μ l and 19.375~38.75 μ l;
Reagent C: Taq enzyme, 0.125~0.25 μ l;
(c) electrophoresis and colouring reagents comprise reagent D, reagent E and reagent F;
Reagent D: be 50 times of TAE, contain trihydroxy methyl aminomethane-acetate and ethylenediamine tetraacetic acid (EDTA), concentration is respectively 0.04M and 0.001M;
Reagent E: be gel loading buffer, contain w/v and be 40% sucrose and 0.25% tetrabromophenol sulfonphthalein and the blue or green FF of dimethylbenzene;
Reagent F:0.8~2% agarose+0.5~1 μ g/ml ethidium bromide.
2, the test kit of a kind of rapid detection shark vibrio according to claim 1 is characterized in that: described special primer is as follows to VcS and VcA:
Special primer VcS refers to 5 ' ATCCGGCAATGCAGTGTTC 3 ';
Special primer VcA refers to 5 ' ACCTACCCGCCTCCTTACGC 3 '.
3, the test kit of a kind of rapid detection shark vibrio according to claim 1, it is characterized in that: the consisting of of described polymerase chain reaction reagent: reagent B:5.0 μ l 10 * PCR Buffer, 1.0 μ l VcS, 1.0 μ l VcA, 1.0 μ l dNTP, 1.0 μ l BSA, 38.75 μ l ddH
2O; Reagent C: 0.25 μ l Taq enzyme.
4, a kind of method of using the test kit detection shark vibrio of rapid detection shark vibrio is characterized in that comprising the steps:
(a) increase bacterium: get the 2.7g reagent A and add filtering sea to 100ml, transferring pH value is to make the microbial culture flat board according to a conventional method behind 7.2~7.4,121 ℃ of sterilization 15~20min; 0.1~0.5 gram sample is got in aseptic technique, and coating with reagent A after the homogenate is the made flat board of enrichment medium, cultivates 12~18 hours for 30 ℃;
(b) pcr amplification: various lawns are got the template of 1~2 μ l as pcr amplification on the picking flat board behind the resuspended mixing in 100 μ l sterile purified waters; Getting 23.875~47.75 μ l reagent B mixes with 0.125~0.25 μ l reagent C; On thermal cycler by 95 ℃ of cracking bacteriums and unwind 5 minutes; Use 94 ℃ of sex change 30~60 seconds then, in 55~58 ℃ of 30~60 seconds of renaturation, 72 ℃ were extended for 30~90 seconds, so circulated 25~35 times, at last 72 ℃ of insulations 8~12 minutes, the specific fragment of shark vibrio were increased to 10
8More than the mol;
(c) electrophoresis and color developing detection: get the sample after 5~10 μ l increase, mix with 1~2 μ l reagent F, W/V is 0.8~1.2% agarose electrophoresis and colour developing, under UV-light, detect the band whether one 470 nucleotide pair is arranged, if the band of a 470bp is arranged, contain shark vibrio in the interpret sample, otherwise then do not have shark angle vibrios.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101974523A (en) * | 2010-11-23 | 2011-02-16 | 中国检验检疫科学研究院 | Primer, probe, kit and method for real-time fluorescence PCR identification of shark's fin |
CN101984076A (en) * | 2010-11-25 | 2011-03-09 | 中国检验检疫科学研究院 | Primer, kit and method for differentiating fins of different spieces of sharks by polymerase chain reaction and restriction fragment length polymorphism analysis (PCR-RFLP) |
-
2006
- 2006-11-16 CN CNB2006101235917A patent/CN100487134C/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101974523A (en) * | 2010-11-23 | 2011-02-16 | 中国检验检疫科学研究院 | Primer, probe, kit and method for real-time fluorescence PCR identification of shark's fin |
CN101974523B (en) * | 2010-11-23 | 2012-03-21 | 中国检验检疫科学研究院 | Primer, probe, kit and method for real-time fluorescence PCR identification of shark's fin |
CN101984076A (en) * | 2010-11-25 | 2011-03-09 | 中国检验检疫科学研究院 | Primer, kit and method for differentiating fins of different spieces of sharks by polymerase chain reaction and restriction fragment length polymorphism analysis (PCR-RFLP) |
CN101984076B (en) * | 2010-11-25 | 2012-03-21 | 中国检验检疫科学研究院 | Primer, kit and method for differentiating fins of different spieces of sharks by polymerase chain reaction and restriction fragment length polymorphism analysis (PCR-RFLP) |
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