Marine fish mitochondrion 12S rRNA (ribosomal ribonucleic acid) gene amplification primer and design and amplification method thereof

Abstract

The invention belongs to the field of marine fish mitochondrial genome research, and particularly relates to a marine fish mitochondrion 12S rRNA (ribosomal ribonucleic acid) gene amplification primer. The primer is composed of two single-chain oligonucleotide chains, wherein a light chain primer is a nucleotide sequence shown as SEQ ID NO.1, and a heavy chain primer is a nucleotide sequence shown as SEQ ID NO.2. The invention also provides a design method of the amplification primer and a method for amplifying a marine fish DNA (deoxyribonucleic acid) solution by using the amplification primer. The invention can efficiently and specifically amplify multiple marine fish mitochondrion 12S rRNA genes and can be used for the analytical study on the system evolution of different taxonomic categories of fishes, thereby providing a powerful tool for fish species identification, germplasm resource survey and system evolution research.

Description

technical field [0001] The invention belongs to the research field of mitochondrial genomes of marine fishes, and in particular relates to a primer for efficiently amplifying mitochondrial 12S rRNA genes of various marine fishes and a design and amplification method thereof. Background technique [0002] Fish mitochondrial DNA (Mitochondrial DNA, mtDNA) is a covalently closed circular structure, including a light chain and a heavy chain, and is a relatively independent replication unit outside the nucleus. Compared with nuclear DNA, fish mitochondrial DNA has the characteristics of large copy number, simple molecular structure, high coding efficiency, fast evolution rate, maternal inheritance and different evolution rates in different regions. Due to these characteristics of fish mitochondrial DNA, it has become an important molecular marker in the research fields of fish molecular population genetics, phylogeny and conservation biology. Similar to other vertebrates, fish m...

AI Technical Summary

Problems solved by technology

However, due to the selection of the design template sequence, the different design methods, and the limitation of the amplification ability of the universal primer itself, the use of the reported universal primers to amplify a variety of marine fishes, mainly gobies and cichlids, exists Therefore, it is necessary to design new universal primers for fish mitochondrial 12S rRNA gene, which are complementary to the reported primers, to effectively obtain the vast majority of fish mitochondrial 12S rRNA gene sequences

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