食品科学

• 生物工程 • 上一篇    下一篇

河豚鱼16S rRNA基因部分DNA序列分析及应用

陈文炳1,翁国柱2,陈融斌3,缪婷玉1,邵碧英1,江树勋1,彭 娟1   

  1. 1.福建出入境检验检疫局技术中心,福建 福州 350001;
    2.莆田出入境检验检疫局,福建 莆田 351100;3.集美大学水产学院,福建 厦门 361021
  • 出版日期:2015-11-15 发布日期:2015-12-03

Partial DNA Sequence Analysis of 16S rRNA Gene in Puffer Fish

CHEN Wenbing1, WENG Guozhu2, CHEN Rongbin3, MIAO Tingyu1, SHAO Biying1, JIANG Shuxun1, PENG Juan1   

  1. 1. Inspection and Quarantine Technology Center, Fujian Entry-Exit Inspection and Quarantine Bureau, Fuzhou 350001, China;
    2. Putian Entry-Exit Inspection and Quarantine Bureau, Putian 351100, China;
    3. Fisheries College, Jimei University, Xiamen 361021, China
  • Online:2015-11-15 Published:2015-12-03

摘要:

应用16S rRNA基因聚合酶链式反应(polymerase chain reaction,PCR)扩增通用引物,对3 属13 种福建省搜集的河豚鱼样品与9 个未知物种的河豚鱼样品的16S rRNA基因序列中的部分片段进行PCR扩增与脱氧核糖核酸(deoxyribonucleic acid,DNA)碱基序列测定,各物种序列长度在611~614 bp之间。应用DNAMAN V6软件进行样品间DNA序列同源性比对分析,建立样品间系统关系同源树。供试13 个样品被划分为4 个类群组,群间的同源率为87%,群内同源率为94%~100%。根据序列同源性分析结果,9 个未知种名的样品被归类到3 个类群组中,推测9 个未知种名的样品为东方鲀属或腹刺鲀属。探讨了16S rRNA基因部分DNA序列测试及同源性分析技术在河豚鱼种属鉴别中应用的可能性。

关键词: 河豚鱼, 聚合酶链式反应, 16S rRNA基因, DNA测序, 物种鉴定

Abstract:

Partial fragments of the 16S rRNA gene of puffer fish from 13 species belonging to 3 genus collected from Fujian
province and 9 samples from unknown species were amplified by polymerase chain reaction (PCR) using the universal
16S rRNA gene primers. The PCR products were sequenced, and the length of the obtained DNA fragments were 611–614
bp in all samples. The homology of DNA sequences among samples was analyzed with the DNAMAN V6 software, and
the phylogenetic tree among samples was established. Thirteen samples were divided into 4 groups, with a homology of
87% among groups and 94%–100% between any two samples within the same group. Nine samples of unknown puffer fish
species were classed into 3 groups which belonged to the Gastrophysus or Takifugu genus. The results obtained in this study
can provide references for the application of 16S rRNA gene sequencing and homological analysis to identify puffer fish at
genus and species levels.

Key words: puffer fish, polymerase chain reaction, 16S rRNA gene, DNA sequencing, species identification

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