Synergistic interactions between Glomus mosseae and Bradyrhizobium japonicum in enhancing proton release from nodules and hyphae
文献类型: 外文期刊
第一作者: Ding, Xiaodong
作者: Ding, Xiaodong;Wang, Fang;Gao, Junhua;Zhang, Fusuo;Feng, Gu;Sui, Xinhua;He, Xinhua;He, Xinhua;Yang, Juncheng
作者机构:
关键词: Bradyrhizobium japonicum;Glomus mosseae;Soybean;Proton release;Nodulesphere;Hyphosphere
期刊名称:MYCORRHIZA ( 影响因子:3.387; 五年影响因子:4.031 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: Soybean (Glycine max L. Merr.) seedlings were inoculated with Glomus mosseae (GM) and Bradyrhizobium japonicum (BJ) together or separately to study the effect of interactions on net H(+) effluxes of nodules or extraradical hyphae by in vivo vibrating electrode techniques. GM promoted three-fold the H(+) effluxes of nodules on mycorrhizal lateral roots and BJ increased eight-fold the net H(+) effluxes of hyphae developing in the vicinity of nodules on lateral roots. Increments in plant P content were positively and linearly correlated with the net H(+) efflux of nodules and hyphae. It is concluded that increased H(+) effluxes of nodules resulted from enhanced nitrogenase activities induced by the presence of the AM fungus in lateral roots. The results point to additive effects of interactions between mycorrhizal fungi and rhizobia in increasing the extent of acidification of the "nodulesphere" and the hyposphere.
分类号: Q949.32
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