浙江农业学报 ›› 2020, Vol. 32 ›› Issue (5): 810-815.DOI: 10.3969/j.issn.1004-1524.2020.05.08

• 园艺科学 • 上一篇    下一篇

苗药小花清风藤叶绿体基因psbA-trnH序列特征及遗传多样性分析

严福林, 王波, 温迪, 徐文芬, 孙庆文*, 魏升华   

  1. 贵州中医药大学 药学院,贵州 贵阳 550025
  • 收稿日期:2019-11-14 出版日期:2020-05-25 发布日期:2020-05-29
  • 通讯作者: *,孙庆文,E-mail:1016923718@qq.com
  • 作者简介:严福林(1986—),男,贵州安龙人,硕士,讲师,主要从事中药与民族药资源研究。E-mail:flyan00@qq.com
  • 基金资助:
    国家自然科学基金(81560707); 贵州省国内一流学科建设项目(GNYL〔2017〕008); 贵州省普通高等学校工程研究中心项目(黔教合KY字〔2017〕018); 贵州省优秀青年科技人才项目(黔科合平台人才〔2019〕5658); 国家中医药管理局资助项目(国中医药科技中药2014-117号)

Genetic diversity analysis of Sabia parviflora based on chloroplast gene psbA-trnH sequence

YAN Fulin, WANG Bo, WEN Di, XU Wenfen, SUN Qingwen*, WEI Shenghua   

  1. Department of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
  • Received:2019-11-14 Online:2020-05-25 Published:2020-05-29

摘要: 基于psbA-trnH序列分析,探讨黔产小花清风藤种质资源遗传多样性、系统进化与分子鉴定方法,对贵州苗药小花清风藤4个县区产地13个居群样品进行psbA-trnH序列PCR扩增。应用Codon Code Aligner 8.0.2软件进行校对拼接,分析居群遗传距离、单倍型数量与多样性,构建系统进化树。结果表明:13条小花清风藤叶绿体基因psbA-trnH 序列长度为469~488 bp,多态性位点数共37个,简约信息位点14个,自裔位点23个,插入/缺失片段3个;居群间的遗传距离变化范围为0~0.085 9,平均遗传距离为0.025 3,具有4个单倍型,单倍型(基因)多样性(Hd)为0.679;Fu and Li's D*检验、Fu and Li's F*检验、Tajima's D检验中P值均大于0.10,无统计学意义,说明黔产小花清风藤进化速率不一致,遗传多样性分化较丰富。本研究丰富了小花清风藤及其同属植物的研究数据,为小花清风藤的分类鉴定、系统演化和分子标记开发等研究提供了一定参考。

关键词: 小花清风藤, psbA-trnH, 贵州, 遗传多样性

Abstract: System evolution relationship, genetic diversity and molecular identification method of the germplasm resources of Sabia parviflora from different regions of Guizhou were analyzed based on the sequence of psbA-trnH chloroplast gene. The psbA-trnH sequences of 13 Sabia parviflora samples from 4 counties and districts in Guizhou were amplified and sequenced by PCR. Codon Code Aligner 8.0.2 software was applied for collation and splicing, and population genetic distance, haplotype number and diversity were analyzed to construct phylogenetic tree. The length of psbA-trnH sequence of 13 chloroplast genes of Sabia parviflora was 469-488 bp, with 37 polymorphism sites, 14 reduced information sites, 23 indigenous sites, and 3 inserted/deleted fragments. The variation range of genetic distance between different populations was 0-0.085 9, and the average genetic distance was 0.025 3, with 4 haplotypes, haplotype (gene) diversity (Hd) of 0.679. In Fu and Li's D* test, Fu and Li's F* test, and Tajima's D test, P values were all greater than 0.10, without statistical significance. In conclusion, the evolution rate of Sabia parviflora was not consistent, and the genetic diversity was rich. This study enriched the research data of Sabia parviflora and its genera, and provided a certain reference for the classification, identification, systematic evolution and molecular marker development of Sabia parviflora.

Key words: Sabia parviflora, psbA-trnH sequence, Guizhou, genetic diversity

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