湖北农业科学 ›› 2021, Vol. 60 ›› Issue (6): 76-80.doi: 10.14088/j.cnki.issn0439-8114.2021.06.015

• 园艺·特产 • 上一篇    下一篇

国外引进辣椒DNA表观遗传多样性分析

徐小万1, 夏碧波2, 吴智明2, 田永红1   

  1. 1.广东省农业科学院蔬菜研究所/广东省蔬菜新技术研究重点实验室,广州 510640;
    2.仲恺农业工程学院园艺园林学院,广州 510225
  • 收稿日期:2020-12-07 出版日期:2021-03-25 发布日期:2021-04-07
  • 通讯作者: 田永红(1970-),男,高级农艺师,主要从事蔬菜种质资源收集及新品种示范推广,(电子信箱)13661718@qq.com。
  • 作者简介:徐小万(1975-),男,湖南郴州人,研究员,博士,主要从事茄果类蔬菜遗传育种,(电话)13145759735(电子信箱)xxw7505@163.com。
  • 基金资助:
    广东省自然科学基金资助项目(2018A030313020); 广东省科技专项资金(“大专项+任务清单”)资助项目(2019N007); 广东省科技创新平台类项目(2020A1414050033); 广州市农村科技特派员资助项目(GZKTP201914); 广东省农业科学院院长基金资助项目(201811)

Surveying DNA epigenetic diversity in the foreign hot pepper germplasms

XU Xiao-wan1, XIA Bi-bo2, WU Zhi-ming2, TIAN Yong-hong1   

  1. 1. Vegetable Research Institute/ Guangdong Key Laboratory for New Technology Research of Vegetables, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;
    2. College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
  • Received:2020-12-07 Online:2021-03-25 Published:2021-04-07

摘要: 从63对MSAP引物中筛选出9对重复性较好和条带清晰的引物,对30份国外引进的辣椒(Capsicum spp.)资源基因组DNA进行MSAP扩增。DNA甲基化模式分析表明,30份辣椒材料甲基化模式主要以全甲基化为主;但是MSP(Methylation-sensitive polymorphisms)聚类和MISP(Methylation-insensitive polymorphisms)聚类均比较离散,相关材料主坐标分析与其聚类分析结果基本一致,DNA甲基化研究并没有将一年生辣椒聚为1个类群。辣椒表观遗传变异相对于基因组遗传变异更为丰富。

关键词: 辣椒(Capsicum spp.), 国外种质资源, 表观遗传多样性

Abstract: Nine pairs of primers with good repeatability and clear bands were screened from 63 pairs of MSAP primers, and 30 hot pepper (Capsicum spp.) germplasms introduced from abroad were amplified by MSAP. The analysis of DNA methylation pattern showed that fully methylation was major methylation type in 30 hot peppers. However,MSP(Methylation-sensitive polymorphisms) clustering and MISP(Methylation-insensitive polymorphisms) clustering were all relatively discrete, and the related principal coordinate analysis was basically consistent with the clustering analysis results. The DNA methylation study did not gather Capsicum spp. into the same group. It is shown that the epigenetic variation of hot pepper is more abundant than the genetic variation of the genome.

Key words: hot pepper(Capsicum spp.), foreign germplasms, epigenetic diversity

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