Endophytic colonisation of Bacillus subtilis in the roots of Robinia pseudoacacia L.

作者：Biao Huang, Chengqun Lv, Peng‐Yu Zhuang, Haodong Zhang, Lanlan Fan · 发表于：Plant Biology · 年份：2011 · DOI：10.1111/j.1438-8677.2011.00456.x · 被引用次数：30 · 研究领域：Legume Nitrogen Fixing Symbiosis、Plant-Microbe Interactions and Immunity、Plant Parasitism and Resistance

The endophytic colonisation of Bacillus subtilis strain GXJM08, isolated from roots of Podocarpus imbricatus B1. Enum. P1. Jav., in roots of the leguminous plant Robinia pseudoacacia L. was investigated. Ultrastructure observations showed that B. subtilis caused morphological changes in the root hair and colonised the plant through infected root hairs. The structure of the infection thread was similar to that of rhizobia, but the structure of infected cells was different. B. subtilis is also different from rhizobia and plant pathogens in terms of the formation of a peribacteroid membrane and the mode of penetration through the host cell wall. Our results provide a basis for studying development of the mutualistic symbiotic relationship between B. subtilis and plants, and a basis for studying the mechanism of the B. subtilis-plant interaction.