四川宜宾三种乔木内生真菌的多样性

Diversity of Fungal Endophytes Obstained from Three Kinds of Arbores in Yibin, Sichuan

对四川宜宾同一生境中的油樟[Cinnamomum longepaniculatum(Gamble)N.Chao]、香樟[C.camphora(Linn.)Presl]和白栎(Quercus fabri Hance)三种30棵乔木根、茎、叶中的内生真菌多样性进行了研究。结果显示:三种植物中的内生真菌在属一级分类单位上都存在一定程度的多样性和器官特异性,组丝核菌属(Phacodium Pers.)为3种植物内生真菌共有的优势属;同时,通过对3种植物内生真菌的比较,发现3种植物整体及对应部位中内生真菌的相似性均较低;油樟和香樟间内生真菌的相似程度略高于二者与白栎内生真菌的相似程度,但并不显著,说明植物内生真菌的组成受环境和基因型的共同影响。

Endophytic fungal communities in 30 trees of three kinds of arbores Cinnamomum longepaniculatum （Gamble） N. Chao, C. camphora （Linn.） Presl and Quercus fabri Hance grown in the same condition at a plantation in Yibin, Sichuan province were studied. The results indicated that： there was considerable diversity of endophytic fungi in the three kinds of arbores, and the compositions of endophytic fungi were different in different organs of the same arbor; Phacodium Pers. was the dominant endophytic fungus in all three kinds of plants; the compositions of endophytic fungi exhibited low similarities between different tissues and different kinds of arbores. The endophytic fungi in C. longepaniculatum （Gamble） N. Chao had higher similarity to that of C. camphora （Linn.） Presl than to that of Quercusfabri Hance, but there was not significant difference between them. These indicated the compositions of endophytic fungi were affected by gene-type of host plant and climate factors.