Influence of yeast spot disease caused by Eremothecium coryli and E. ashby on soybean seed development

The influence of yeast spot disease caused by Eremothecium coryli and E. ashbyi on the development of soybean seed was investigated. Soybean seeds were inoculated with one of the yeasts via sucking by Riptortus pedestris, allowed to feed on the seeds for 24 hours at room temperature. As a result, the seed coats of inoculated seeds developed necrotic areas, and seed filling of the seeds was inhibited. The symptoms and degree of inhibition of the infected seeds differed significantly from those on soybean seeds that had been sucked by yeast-free R. pedestris.