Effects ofMikania micrantha wilt virusinfection on photosynthesis and the activities of four enzymes inMikania micranthaH.B.K.

Abstract

Mikania micrantha (Compositae) is one of the world忆s most aggressive weeds and is responsible for substantial damage caused to natural ecosystems and biodiversity in South china. A new virus infecting Mikania micrantha, designated Mikania micrantha wilt virus (MMWV) , belongs to a third subgroup of the genus Fabavirus and represents a distinct new isolate of Gentian mosaic virus (GeMV). Although MMWV is not lethal to M. micrantha, MMWV efficiently inhibits the