应用透射电镜对云芝(Coriolus versicolor NFU008)腐朽杨木的过程和试材的超微形态变化以及云芝降解木材的方式进行了研究和探讨。实验结果表明,C.versicolor NFU008对木质素不仅具有很强的降解能力,而且选择性也较强,它在腐朽早期优先降解纤维胞间层的木质素,并能使纤维达到解离。结果还显示,菌丝在其周围产生的粘液在木材腐朽过程中起到了十分重要的作用,它们参与了细胞壁物质的降解和代谢。此外,胶质木纤维中的胶质层对云芝具有很强的抵抗力,在整个腐朽过程中,它们基本上未受到腐朽破坏。 Transmission electron microscopy (TEM) was used to study the ultrastructure of decay poplar (Coriolus versicolor NFU008) and its ultrastructure and the way of degrading wood. The experimental results show that C. versicolor NFU008 not only has strong degradation ability to lignin but also has high selectivity. It preferentially degrades the lignin in the intercellular layer during decay and enables the fiber to dissociate. The results also showed that the myxoid mucus produced around it played a very important role in the wood decay process, they are involved in cell wall material degradation and metabolism. In addition, the gummy layers of the gummy fibers are very resistant to the causal agents of Coriolus versicolor, and they are essentially not damaged by decay throughout the decay process.