摘要
[目的]探讨兰科植物菌根的形态解剖特征,了解内生真菌与兰科植物共生的方式。【方法】野生建兰采自粤北山区,样品采用ＴｒｙｐａｎＢｌｕｅ染色法、在光学显微镜下观察菌根的内部结构,并计算兰根中的细胞感染率。[结果]菌根真菌由根被和外皮层侵入到皮层薄壁组织,在皮层薄壁细胞内形成菌丝团,并扩展成一定的感染区域。部分皮层细胞内的菌丝团已被消解吸收,菌丝体呈团块状。[结论]野生建兰具有典型的兰科菌根构造。菌根真菌只感染皮层薄壁细胞,而不侵染到表皮细胞内部和中部的维管柱。兰科植物通过消解胞内菌丝团而摄取养分。
The microstructure of mycorrhiza of wild Cymbidium ensifolium, collected from the mountains of north Guangdong was studied. The results showed that this species possesses the typical mycorrhizal structure of orchid plant. Mycorrhizal fungi invaded the cortex parenchyma by velamen and exodermis, and then, form pelotons and expanded part of area of cortex. The intracellular mycelium was digested and absorbed with clumps of digested material in some cells.
出处
《广州中医药大学学报》
CAS
2002年第1期60-62,共3页
Journal of Guangzhou University of Traditional Chinese Medicine
基金
广东省"九五"重点科技攻关项目(编号:049711961101)
