杉苗叶片受炭疽病菌(Colletotrichum gloeosporioides(Penz)Sace)侵染后,在受害程度不同的寄主细胞中,叶绿体、线粒体、细胞壁、细胞质.高尔基小泡和质膜的结构、大小及内含物有不同程度的变化。在相对没有损害的细胞中,观察到细胞壁膨胀、细胞质变浓、凝聚和出现质膜体。这一现象是细胞对病原侵入的反应,其细胞壁成份,厚度和胞质中化学成分的改变.与抵抗病原侵入有关. The structure, size and content of chloroplast, mitochondria, cell wall, cytoplasm, Golgi vesicle and plasma membrane in the seedlings of Cunninghamia lanceolata seedlings infected by Colletotrichum gloeosporioides (Penz) Sace Different degrees of change. In relatively undamaged cells, swelling of the cell wall, thickening of the cytoplasm, aggregation and the appearance of the plasma membrane body were observed. This phenomenon is the reaction of cells to pathogen invasion, changes in the composition of cell wall, the thickness and the chemical composition in the cytoplasm, and resistance to pathogen invasion.