title: Phylogenetic diversity on housekeeping and symbiotic genes of rhizobial from Sphaerophysa in China.
abstract: This study explored the diversity and phylogeny of rhizobia collected from nodules of Sphaerophysa salsula in different geographical regions of Northwest China. The 16S rRNA gene sequences divided the strains into the following distinct groups: Mesorhizobium, Rhizobium and Shinella. The phylogenies of recA and atpD genes showed low correlation with nifH and nodA gene in most species, which indicated that, the gene recombination between species and genera might have been exist. To our knowledge, this is the first study using the multilocus sequencing analysis Sphaerophysa rhizobia in order to understand the relation between genetic diversity and ecology.
authors.affiliation: Institute of Agricultural and Biological Technology, Hexi University, Zhangye, 734000, Gansu, China, xulinsjfnubi@163.com.
authors.forename: Lin
authors.initials: L
authors.lastname: Xu
authors.forename: Osama Abdalla
authors.initials: OA
authors.lastname: Mohamad
authors.forename: Yin Shan
authors.initials: YS
authors.lastname: Ma
authors.forename: Yu Mei
authors.initials: YM
authors.lastname: Zhang
authors.forename: Zhao Yu
authors.initials: ZY
authors.lastname: Kong
mesh_terms: D002681:China; D004269:DNA, Bacterial; D004275:DNA, Ribosomal / Q000032:analysis; D019143:Evolution, Molecular; D007887:Fabaceae / Q000382:microbiology*; D005798:Genes, Bacterial; D020043:Genes, Essential; D014644:Genetic Variation; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000032:analysis; D011995:Recombination, Genetic; D012231:Rhizobium / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification*; D017422:Sequence Analysis, DNA; D013559:Symbiosis
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S