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Wang R.-L.,South China Agricultural University | Wang R.-L.,Key Laboratory of Tropical Agro Environment | Wang R.-L.,Guangdong Regular Higher Education Institutions | Chen Y.,South China Agricultural University | And 20 more authors.
Chinese Journal of Ecology | Year: 2013

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.

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