Membranes of host mesophyll cells had marked pathological changes, organelles disintegrated, cytoplasm condensed, plasmalemma invaginated, and eventually the whole cell disintegrated and necrotized.

• 寄主叶肉细胞的膜系统明显病变，细胞器解体，细胞质凝聚，质膜内陷，最终整个细胞坏死解体。