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• 研究报告 • 上一篇    下一篇

薇甘菊萎蔫病毒寄主范围、传播媒介和危害特点

王瑞龙1,2,3,陈颖1,2,3,张晖1,2,3,王子叶1,2,3,宫骁1,2,3**   

  1. (1华南农业大学亚热带农业生物资源保护与利用国家重点实验室, 广州 510642; 2农业部华南热带农业环境重点实验室,  广州 510642; 3广东省普通高等学校农业生态与农村环境重点实验室, 广州 510642)
  • 出版日期:2013-01-10 发布日期:2013-01-10

Host range, transmitting vector, and damage characteristics of Mikania micrantha wilt virus.

WANG Rui-long1,2,3, CHEN Ying1,2,3, ZHANG Hui1,2,3, GUAN Ao-mei1,2,3, WANG Zi-ye1,2,3, GONG Xiao1,2,3, YIN Yi1,2,3, ZENG Ren-sen1,2,3**   

  1. (1State Key Laboratory for Conservation and Utilization of Subtropical Agrobioresources, South China Agricultural University, Guangzhou 510642, China; 2Key Laboratory of Tropical Agroenvironment, Ministry of Agriculture, Guangzhou 510642, China; 3Key Laboratory of Agroecology and Rural Environment of Guangdong Regular Higher Education Institutions, Guangzhou 510642, China)
  • Online:2013-01-10 Published:2013-01-10

摘要: 薇甘菊(Mikania micrantha H.B.K.)是华南地区重要的外来入侵植物。本文从田间薇甘菊萎蔫病株中分离获得薇甘菊萎蔫病毒(Mikania micrantha wilt virus,MMWV)。在温室中通过人工摩擦将该病毒接种到9科27种植物上,发现MMWV能侵染其中的6科12种植物。利用透射电子显微镜观察该病毒颗粒呈球状,直径约30 nm。MMWV可由桃蚜(Myzus persicae)以非持久性方式传毒。薇甘菊植株接种MMWV毒30 d后,其茎的长度、叶、茎和根的鲜重分别比健康对照植株减少了75.3%、91.6%、79.5%和75.6%,被侵染的薇甘菊出现萎蔫、皱缩、叶畸形等症状。实验室和野外条件均观察到MMWV可以严重抑制薇甘菊的生长,利用MMWV控制薇甘菊的生物入侵有待进一步深入研究。

Abstract: Mikania micrantha H.B.K. is an important invasive alien plant in South China. In this study, a virus named Mikania micrantha wilt virus (MMWV) was isolated from the invasive plant in the field, and a greenhouse experiment was conducted to inoculate the virus on 27 plant species of 9 families. A total of 12 plant species belonging to 6 families were infected. The electron microscopy observation revealed that the MMWV particle was spherical, with a diameter of about 30 nm. The MMWV could be transmitted by Myzus persicae in a non-persistent manner. Thirty days after infection by MMWV, the shoot height and the fresh weights of leaves, stems, and roots of M. micrantha were reduced significantly by 75.3%, 91.6%, 79.5%, and 75.6%, respectively, as compared to the control. The infected M. micrantha plants showed wilt, crimpled, and malformed symptoms under field conditions. Under both laboratory and field conditions, the MMWV inhibited the growth of M. micrantha efficiently. The feasibility of using the MMWV to control the invasion of M. micrantha would be worthy to be explored further.