Cytopathological changes in Schefflera actinophylla Harms. Naturally infected with impatiens necrotic spot virus(INSV)

摘要

Plants of Schefflera actinophylla Harms. With stunted growth, chlorotic and necrotic spots and patterns, leaf epinasty and distortion are infected with impatiens necrotic spot virus classified as a member of genus Tospovirus. Studies with electron microscope revealed that in cells of S. actinophylla leaves there were no virus particle inclusions typical for tospovirus in- fection, but only single particles were present. The isolate of INSV was defective and the amount of INSV particles was strongly reduced in Schefflera plants.