SOME ASPECTS ON THE BIOTROPHY OF VAM FUNGI

被引：0

作者：

BECARD, G

PICHE, Y

FORTIN, JA

机构：

[1] Centre de Recherche en Biologie Forestière, Faculté de Foresterie et de Géodésie, Université Laval

来源：

AGRICULTURE ECOSYSTEMS & ENVIRONMENT | 1990年 / 29卷 / 1-4期

关键词：

D O I：

10.1016/0167-8809(90)90249-D

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

Hyphal growth from germinating spores of Gigaspora margarita was monitored under several conditions: with or without roots, root colonization, or removal of the spore. The results indicate that roots stimulate fungal growth by different mechanisms. Before colonization, roots provide inductive factors which promote fungal growth when the nutrients in spores are available. When colonization is completed, the roots also provide nutrients. The inductive action of roots probably involves root exudates and particularly gas balance, in which CO2 appears to play key role. Any attempts to cultivate VAM fungi in pure culture should consider the nutritional and inductive role of roots. © 1990.

引用

页码：29 / 33

页数：5