title: Rhizobium vignae sp. nov., a symbiotic bacterium isolated from multiple legume species.
abstract: A group of rhizobial strains isolated from nodules of multiple legume species grown in different geographical regions of China had identical 16S rRNA genes. Phylogenetic analysis based on the 16S rRNA gene sequences showed that the novel strains formed a subclade in the genus Rhizobium together with Rhizobium galegae, Rhizobium huautlense and Rhizobium alkalisoli, with 99.8  % gene sequence similarity between the strains. The DNA-DNA relatedness values between the representative strain CCBAU 05176(T) and R. galegae ATCC 43677(T), R. huautlense S02(T) and R. alkalisoli CCBAU 01393(T) were 22.6  %, 8.9  % and 15.9  %, respectively. The novel strains were distinguished from recognized species of the genus Rhizobium by using a polyphasic approach, including PCR-based restriction fragment length polymorphism analysis (RFLP) of the 16S-23S intergenic spacer (IGS), phenotypic and physiological tests, sequence comparisons of housekeeping genes and cellular fatty acid profiles. Therefore, it is suggested that this group of strains represents a novel species for which the name Rhizobium vignae sp. nov. is proposed. The type strain is CCBAU 05176(T) (=HAMBI 3039(T)=LMG 25447(T)).
authors.affiliation: State Key Laboratories for Agrobiotechnology/College of Biological Sciences, China Agricultural University, Beijing, 100193, PR China.
authors.forename: Da Wei
authors.initials: DW
authors.lastname: Ren
authors.affiliation: State Key Laboratories for Agrobiotechnology/College of Biological Sciences, China Agricultural University, Beijing, 100193, PR China.
authors.forename: Wen Feng
authors.initials: WF
authors.lastname: Chen
authors.affiliation: State Key Laboratories for Agrobiotechnology/College of Biological Sciences, China Agricultural University, Beijing, 100193, PR China.
authors.forename: Xin Hua
authors.initials: XH
authors.lastname: Sui
authors.affiliation: Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, 11340 México D. F., México.|State Key Laboratories for Agrobiotechnology/College of Biological Sciences, China Agricultural University, Beijing, 100193, PR China.
authors.forename: En Tao
authors.initials: ET
authors.lastname: Wang
authors.affiliation: State Key Laboratories for Agrobiotechnology/College of Biological Sciences, China Agricultural University, Beijing, 100193, PR China.
authors.forename: Wen Xin
authors.initials: WX
authors.lastname: Chen
mesh_terms: D015373:Bacterial Typing Techniques; D002681:China; D016000:Cluster Analysis; D016172:DNA Fingerprinting; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D021903:DNA, Ribosomal Spacer / Q000235:genetics; D007887:Fabaceae / Q000382:microbiology*; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D010802:Phylogeny; D012150:Polymorphism, Restriction Fragment Length; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012231:Rhizobium / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification*; D017422:Sequence Analysis, DNA
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D021903:DNA, Ribosomal Spacer; D012336:RNA, Ribosomal, 16S