湖北农业科学 ›› 2020, Vol. 59 ›› Issue (13): 154-157.doi: 10.14088/j.cnki.issn0439-8114.2020.13.035

• 生物工程 • 上一篇    下一篇

滇重楼辣椒轻斑驳病毒分离物的鉴定及全基因组序列分析

杨林毅a, 陈潞a, 陈泽历b, 飞进强b, 王喆a, 徐绍忠b, 赵明富a, 文国松b   

  1. 云南农业大学,a.农业生物多样性与病害控制教育部重点实验室; b.农业与生物技术学院,昆明 650201
  • 收稿日期:2019-10-29 出版日期:2020-07-10 发布日期:2020-09-03
  • 通讯作者: 赵明富(1975-),男,云南宣威人,副教授,博士,主要从事植物病理学研究,(电话)13987134765(电子信箱)zhaomingfu@163.com;文国松(1968-),男,云南曲靖人,研究员,博士,主要从事中药学研究,(电话)13987192067(电子信箱)wengs@163.com。
  • 作者简介:杨林毅(1992-),男,河南安阳人 ,硕士,研究方向为植物病理学,(电话)13503804902(电子信箱)13503804902@163.com。并列第一作者,陈 潞(1997-),女,云南昭通人,在读硕士研究生,研究方向为植物病理学,(电话)18313927962(电子信箱)958614573@qq.com。
  • 基金资助:
    国家自然科学基金项目(81860774)

Identification and genome sequence analysis of pepper mild mottle virus isolate from Paris polyphylla var. yunnanensis

YANG Lin-yia, CHEN Lua, CHEN Ze-lib, FEI Jin-qiangb, WANG Zhea, XU Shao-zhongb, ZHAO Ming-fua, WEN Guo-songb   

  1. a. Key Laboratory of Agrobiodiversity and Pest Management,Ministry of Education; b. College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming 650201, China
  • Received:2019-10-29 Online:2020-07-10 Published:2020-09-03

摘要: 滇重楼(Paris polyphylla var. yunnanensis)是多年生草本植物,其药用部位为地下根茎,是一种重要的中药材。为明确侵染滇重楼的病毒病原,对采自云南省曲靖市的滇重楼进行透射电镜观察、DAS-ELISA和RT-PCR技术检测。在透射电镜下观察到杆状病毒粒子,大小为(200~300) nm×(20~36) nm。对采集到的7份病样进行DAS-ELISA检测,结果表明,其中5份病样呈阳性。通过RT-PCR技术扩增、克隆获得1个全长为6 357 bp的曲靖分离物PMMoV-QJ的全基因组序列。将PMMoV-QJ的全基因组序列与国内外已经报道的10个PMMoV分离物进行同源性分析比对,其同源性为99.42%~99.81%。基于全基因序列的系统发育分析表明,PMMoV-QJ与韩国分离物亲缘关系密切。本研究明确了该分离物的亲缘关系,从分子水平鉴定该分离物,为后续滇重楼病毒病的预防提供理论依据。

关键词: 滇重楼(Paris polyphylla var. yunnanensis), 辣椒轻斑驳病毒(PMMoV), 鉴定, 序列分析

Abstract: Paris polyphylla var. yunnanensis is a perennial herb, and its medicinal part is underground rhizomes. It is an important chinese medicinal material. In order to clarify the viral pathogens infecting the Paris polyphylla, the transmission electron microscopy, DAS-ELISA and RT-PCR techniques were performed on the Paris polyphylla collected from Qujing, Yunnan province. Baculovirus particles were observed under transmission electron microscopy and were(200~300)nm ×(20~36)nm in size. The results of DAS-ELISA on 7 samples collected showed that 5 of them were positive. A whole genome sequence of a 6 357 bp Qujing isolate (PMMoV-QJ, accession number MK784568) was cloned by RT-PCR amplification. The homologous sequence of PMMoV-QJ were analyzed by homology with 10 PMMoV isolates reported at home and abroad, and the homology was between 99.42% and 99.81%. Phylogenetic analysis based on the whole gene sequence showed that PMMoV-QJ was closely related to Korean isolates. This study clarifies the genetic relationship of the isolate, and identifies the isolate from the molecular level, which provides a theoretical basis for the prevention of the subsequent viral disease.

Key words: Paris polyphylla var. yunnanensis, pepper mild mottle virus(PMMoV), identification, sequence analysis

中图分类号: