title: [Beta-Proteorhizobia and nonrhizobial species--a review].
abstract: The terms alpha- and beta-rhizobia were proposed to distinguish the rhizobial alpha- and beta-Proteorhizobia respectively. In this review we present recently development of rhizobial taxonomy about beta-rhizobia in the genus Burkholeria, Cupriavidus isolated from Mimosa and alpha-Proteorhizobia belonging to Methylobacterium, Devosia, Ochrobactrum, Phyllobacterium and Blastobacter lineage. Furthermore, we also introduced the evolution of symbiosis related genes such as nodA and nifH, and posed some questions in detecting rhizobia. Finally, we discuss the prospects of research on rhizoiba in future.
authors.affiliation: College of Life Sciences, Hebei University, Baoding 100072, China. liuxiaoyunly@126.com
authors.forename: Xiaoyun
authors.initials: X
authors.lastname: Liu
authors.forename: Wenxin
authors.initials: W
authors.lastname: Chen
authors.forename: Bin
authors.initials: B
authors.lastname: Zhang
mesh_terms: D031298:Mimosa / Q000382:microbiology* / Q000502:physiology; D010088:Oxidoreductases / Q000235:genetics / Q000378:metabolism; D010802:Phylogeny; D020560:Proteobacteria / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification / Q000502:physiology; D012988:Soil Microbiology; D013559:Symbiosis
chemical_list: D010088:Oxidoreductases; C029130:nitrogenase reductase