Gene polymorphic marker of C-type lectin of portunus trituberculatus and genetic typing method of SNP (Single Nucleotide Polymorphism) molecular markers

A technology of portunus trituberculatus and gene polymorphism, applied in the direction of biochemical equipment and methods, DNA preparation, recombinant DNA technology, etc., to achieve the effect of low cost and short cycle

Active Publication Date: 2013-11-13
ZHEJIANG INST OF FRESH WATER FISHERIES
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Problems solved by technology

[0007] Because HRM technology has many advantages, it is widely used in medical molecular typing diagnosis and methylation research. In recent years, it has al

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  • Gene polymorphic marker of C-type lectin of portunus trituberculatus and genetic typing method of SNP (Single Nucleotide Polymorphism) molecular markers
  • Gene polymorphic marker of C-type lectin of portunus trituberculatus and genetic typing method of SNP (Single Nucleotide Polymorphism) molecular markers
  • Gene polymorphic marker of C-type lectin of portunus trituberculatus and genetic typing method of SNP (Single Nucleotide Polymorphism) molecular markers

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[0038] The following methods were used to obtain C-type lectin genomic DNA and molecular markers related to disease resistance of Portunus trituratus:

[0039] (1) Cloning of the full-length gene of C-lectin DNA: According to the known mRNA sequence of the C-type lectin gene of Portunus trituratus (SEQ ID NO: EU477491.1), primers were designed using Primer5.0 software, F1: 5'TCCTGTTCTGACAACCACCAA3' , R1: 5'CTGTGCCCGAGTCAGAAGTA3', using T IANampGenomic DNA purification kit to extract the total genomic DNA in the blood samples of Portunus trituratus, using this as a template, using long fragment PCR to amplify the genomic DNA to obtain the sequence, cloned into the T vector and sequenced, The full-length C-type lectin genome of 1473bp is obtained, including four exons and three introns, the DNA sequence of which is as described in SEQ ID NO: 1 in the sequence table, and the exon part is as shown in figure 1 shown in the box line;

[0040] (2) Preparation of disease-resistant po...

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Abstract

The invention discloses a gene polymorphic marker of C-type lectin of portunus trituberculatus. The gene polymorphic marker comprises four SNP (Single Nucleotide Polymorphism) sites of a gene sequence of the C-type lectin of portunus trituberculatus and deficiency of a triplet-base. SNP at 205bp of a fourth exon is associated with susceptibility/resistance of vibrio alginolyticus of portunus trituberculatus, and is named as T/C E4-205. The invention correspondingly discloses a method for obtaining a molecular marker of the C-type lectin associated with anti-vibrio alginolyticus of portunus trituberculatus and a method for association analysis. According to the invention, the molecular markers associated with diseases are obtained through modern molecular biological techniques and a method for quickly identifying SNP is established. The method has the advantages of high throughput, low cost, sensitivity and high specificity, truly realizes closed tube operation, can be used for selecting advantageous genotype individuals as parents by marker assisted selection (MAS), and lays an important foundation for culturing disease-resistant strains of portunus trituberculatus.

Description

technical field [0001] The invention relates to the preparation of the C-type lectin genome of Portunus trituberculatus and its SNP molecular markers related to resistance to Vibrio alginolyticus, and a method for rapidly performing SNP genotyping, and belongs to the technical field of molecular marker breeding in aquatic biology technology. Background technique [0002] Swimming crab (Portunus trituberculatus) is the leading product of mariculture in the coastal provinces of the mainland, especially in Zhejiang. Two-thirds of the portunus cultured in my country are in Zhejiang. In the "Twelfth Five-Year Plan", portunus trituberculatus is listed as one of the three leading products of aquaculture in Ningbo. However, in recent years, due to the continuous expansion of the breeding scale and the pollution of the breeding environment, the immune defense system of Portunus trituberculatus has been damaged, resulting in a decrease in its own disease resistance, an increase in sus...

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Application Information

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IPC IPC(8): C12N15/11C12N15/10C12Q1/68
CPCY02A50/30
Inventor 郝贵杰王春琳沈锦玉母昌考潘晓艺林锋李荣华盛鹏程姚嘉赟徐洋
Owner ZHEJIANG INST OF FRESH WATER FISHERIES
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