%0 Journal Article
%T Diversity of siderophore-producing endophytic bacteria of Cymbidium goeringii roots<br>可产生铁载体的春兰根内生细菌多样性
%A Lei Sun
%A Hong Shao
%A Lin Liu
%A Ruiying Zhang
%A Lihua Zhao
%A Lubin Li
%A Na Yao
%A <br>孙磊
%A 邵红
%A 刘琳
%A 张瑞英
%A 赵立华
%A 李潞滨
%A 姚娜
%J 微生物学报
%D 2011
%I 
%X Abstract: Objective] In order to obtain the effective plant growth-promoting bacteria, we studied the diversity of siderophore-producing endophytic bacteria in the roots of Cymbidium goeringii. Methods] We screened for siderophore-producing bacteria from 189 root endophytic strains of Cymbidium goeringii by using chrome azurol S (CAS) agar plate assay. The diversity of siderophore-producing endophytic bacteria was investigated by 16S rRNA gene sequence analysis. Results] We obtained 47 siderophore-producing strains (24.9% of the total strains). Sequence analysis revealed that 47 strains were members of 31 species of 17 genera in four phylogenetic groups (Alphaproteobacteria, Betaproteobacteria, Firmicutes, Actinobacteria). The dominant group was Actinobacteria (42.6%), and the dominant genera were Bacillus and Variovorax. The strains of Variovorax produced relatively high levels of siderophore. In addition, there may be two novel taxonomic units. Conclusion] The results show that there are abundant species diversity of siderophore-producing endophytic bacteria in the roots of Cymbidium goeringii.
%K Keywords: endophytic bacteria
%K Cymbidium goeringii
%K siderophore
%K 16S rRNA gene<br>关键词：内生细菌，春兰，铁载体，16S
%K rRNA基因
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=A3C6BA55AB623B90FA9104CFFC826F3C&aid=45505C0E1652244EEB078A6ACDCC4B86&yid=9377ED8094509821&vid=987EDA49D8A7A635&iid=0B39A22176CE99FB&sid=3A0155B37D8FF829&eid=64963996248CBF47&journal_id=0001-6209&journal_name=微生物学报&referenced_num=0&reference_num=18