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A kind of multiple PCR primer and its application in turbot culture

A multiple and specific technology, applied in microorganism-based methods, microbial determination/inspection, microorganisms, etc., can solve the problems of economic loss of farmers, restrict the healthy development of turbot breeding industry, etc., and achieve simple detection and high sensitivity. , strong specific effect

Active Publication Date: 2020-03-03
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the rapid outbreak of bacterial diseases in the turbot breeding process has seriously affected and restricted the healthy development of the turbot farming industry in my country, and brought huge economic losses to the farmers.

Method used

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  • A kind of multiple PCR primer and its application in turbot culture
  • A kind of multiple PCR primer and its application in turbot culture
  • A kind of multiple PCR primer and its application in turbot culture

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Embodiment 1 A kind of multiplex PCR primer

[0061] (1) Design of multiplex PCR primers

[0062] This embodiment aims at the dnaJ gene of strain Aeromonas hydrophila Aeromonas hydrophila, Aeromonas sobria Aeromonas sobria and Aeromonas schubertii Aeromonas schubertii, utilizes MEGA6 software, designs the anti-Aeromonas hydrophila Aeromonas Hydrophila, Aeromonas sobria Aeromonas sobria and Aeromonas schubertii Aeromonas schubertii have three pairs of specific primers with strong specificity and high sensitivity The specific information of the multiple specific primers is shown in Table 1.

[0063] Table 1

[0064]

[0065] (2) Exploration of optimal PCR reaction conditions for multiplex PCR primers

[0066] 1. DNA extraction of strains to be tested

[0067] The DNA of Aeromonas hydrophila (Aeromonas hydrophila), Aeromonas sobria (Aeromonas sobria) and Aeromonas schubertii (Aeromonas schubertii) were extracted using Ezup column's genomic DNA extraction kit (bacter...

Embodiment 2

[0095] Example 2 A multiplex PCR detection method for pathogenic bacteria in turbot breeding process

[0096] Model: A turbot model infected with Aeromonas hydrophila was made.

[0097] Methods as below:

[0098] 1. Extract the total DNA of bacteria in the lesion site of turbot;

[0099] The tissue at the lesion was washed repeatedly with 1ml sterile water, at least three times, then the liquid was collected, and the Ezup column's genomic DNA extraction kit (bacteria) was used to extract the total DNA of the bacteria at the lesion of turbot. The specific steps were as in the above example Step 1 of (2) in 1.

[0100] 2. Using the extracted DNA as a template, the multiple PCR primers described in Example 1 were used to amplify by PCR method to obtain

[0101] to the PCR product;

[0102] The sequence of the upstream primer F1 is: CGACGTGTTTGGCGATATTTTTG

[0103]The sequence of the downstream primer R1 is: GTCTTGGTCTTCTGGTAGCGA

[0104] The sequence of the upstream primer ...

Embodiment 3

[0115] Example 3 A multiplex PCR detection method for pathogenic bacteria in the process of turbot culture

[0116] Model: Making a turbot model infected with Aeromonas temperatus.

[0117] Method is with embodiment 2.

[0118] Results: For the detection of 26 turbots infected with Aeromonas temperii, the agarose gel only showed a 486bp band.

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Abstract

The invention relates to a multiplex-PCR primer and an application thereof in the cultivation process of turbots. The multiplex-PCR primer consists of an aeromonas hydrophila specific primer H, an aeromonas sobria specific primer S and an aeromonas schubetii specific primer Ss. A method for rapidly identifying pathogenic bacteria in the cultivation process of turbots comprises the following steps: extracting total DNA of bacteria of a focus of turbots; by taking the extracted DNA as a template, performing PCR amplification by using the multiplex-PCR primer; and judging according to a sepharose gel imaging result of a PCR amplification primer. Through one time of PCR reaction, three common pathogenic bacteria in the cultivation process of turbots can be detected simultaneously, and very good specificity and sensitivity can be achieved. In the cultivation process of turbots, once the risk that the turbots are infected by the three aeromonas exists, the etiology can be rapidly identified, and cultivation households can be prevented from heavy loss.

Description

technical field [0001] The invention belongs to the field of detection of pathogenic microorganisms, and in particular relates to three common pathogenic bacteria in the breeding process of turbot: Aeromonas hydrophila (Aeromonas hydrophila), Aeromonas sobria (Aeromonas sobria) and Schubert Multiplex PCR detection method for Aeromonas schubertii. Background technique [0002] Turbot, known as the "Turbofish", has been introduced to my country for 10 years. With its excellent seedlings, advanced innovative models and the trend of industrialized farming, it has gradually become an important fish farming industry that attracts the attention of the country. industry. The development of this brand-new industry has played a great role in stimulating my country's aquatic economy, and has laid a solid theoretical and practical foundation for the vertical development of industrialized fish farming in coastal cities in northern my country. However, with the rapid growth of the breedi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12Q1/689C12Q1/686C12Q1/04C12N15/11C12R1/01
CPCC12Q1/686C12Q1/689C12Q2600/16C12Q2537/143C12Q2565/125
Inventor 刘宏生顾颖张新刚张力赵健
Owner LIAONING UNIVERSITY
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