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  • 1
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    Mesorhizobium qingshengii sp. nov., isolated from effective nodules of Astragalus sinicus
    Microbiology Society ; 2013
    In:  International Journal of Systematic and Evolutionary Microbiology Vol. 63, No. Pt_6 ( 2013-06-01), p. 2002-2007
    Details
    In: International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 63, No. Pt_6 ( 2013-06-01), p. 2002-2007
    Abstract: In a study on the diversity of rhizobia isolated from root nodules of Astragalus sinicus , five strains showed identical 16S rRNA gene sequences. They were related most closely to the type strains of Mesorhizobium loti , Mesorhizobium shangrilense , Mesorhizobium ciceri and Mesorhizobium australicum , with sequence similarities of 99.6–99.8 %. A polyphasic approach, including 16S–23S intergenic spacer (IGS) RFLP, comparative sequence analysis of 16S rRNA, atpD , glnII and recA genes, DNA–DNA hybridization and phenotypic tests, clustered the five isolates into a coherent group distinct from all recognized Mesorhizobium species. Except for strain CCBAU 33446, from which no symbiotic gene was detected, the four remaining strains shared identical nifH and nodC gene sequences and nodulated with Astragalus sinicus. In addition, these five strains showed similar but different fingerprints in IGS-RFLP and BOX-repeat-based PCR, indicating that they were not clones of the same strain. They were also distinguished from recognized Mesorhizobium species by several phenotypic features and fatty acid profiles. Based upon all the results, we suggest that the five strains represent a novel species for which the name Mesorhizobium qingshengii sp. nov. is proposed. The type strain is CCBAU 33460 T ( = CGMCC 1.12097 T  = LMG 26793 T  = HAMBI 3277 T ). The DNA G+C content of the type strain is 59.52 mol% ( T m ).
    Type of Medium: Online Resource
    ISSN: 1466-5026 , 1466-5034
    URL: Article
    DOI: 10.1099/ijs.0.044362-0
    Language: English
    Publisher: Microbiology Society
    Publication Date: 2013
    detail.hit.zdb_id: 215062-1
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  • 2
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    Rhizobium anhuiense sp. nov., isolated from effective nodules of Vicia faba and Pisum sativum
    Microbiology Society ; 2015
    In:  International Journal of Systematic and Evolutionary Microbiology Vol. 65, No. Pt_9 ( 2015-09-01), p. 2960-2967
    Details
    In: International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 65, No. Pt_9 ( 2015-09-01), p. 2960-2967
    Abstract: Four rhizobia-like strains, isolated from root nodules of Pisum sativum and Vicia faba grown in Anhui and Jiangxi Provinces of China, were grouped into the genus Rhizobium but were distinct from all recognized species of the genus Rhizobium by phylogenetic analysis of 16S rRNA and housekeeping genes. The combined sequences of the housekeeping genes atpD , recA and glnII for strain CCBAU 23252 T showed 86.9 to 95 % similarity to those of known species of the genus Rhizobium . All four strains had nodC and nifH genes and could form effective nodules with Pisum sativum and Vicia faba, and ineffective nodules with Phaseolus vulgaris , but did not nodulate Glycine max, Arachis hypogaea, Medicago sativa, Trifolium repens or Lablab purpureus in cross-nodulation tests. Fatty acid composition, DNA–DNA relatedness and a series of phenotypic tests also separated these strains from members of closely related species. Based on all the evidence, we propose a novel species, Rhizobium anhuiense sp. nov., and designate CCBAU 23252 T ( = CGMCC 1.12621 T  = LMG 27729 T ) as the type strain. This strain was isolated from a root nodule of Vicia faba and has a DNA G+C content of 61.1 mol% ( T m ).
    Type of Medium: Online Resource
    ISSN: 1466-5026 , 1466-5034
    URL: Article
    DOI: 10.1099/ijs.0.000365
    Language: English
    Publisher: Microbiology Society
    Publication Date: 2015
    detail.hit.zdb_id: 215062-1
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  • 3
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    Bradyrhizobium guangdongense sp. nov. and Bradyrhizobium guangxiense sp. nov., isolated from effective nodules of peanut
    Microbiology Society ; 2015
    In:  International Journal of Systematic and Evolutionary Microbiology Vol. 65, No. Pt_12 ( 2015-12-01), p. 4655-4661
    Details
    In: International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 65, No. Pt_12 ( 2015-12-01), p. 4655-4661
    Abstract: Seven slow-growing rhizobia isolated from effective nodules of Arachis hypogaea were assigned to the genus Bradyrhizobium based on sharing 96.3–99.9 % 16S rRNA gene sequence similarity with the type strains of recognized Bradyrhizobium species. Multilocus sequence analysis of glnII , recA , gyrB and dnaK genes indicated that the seven strains belonged to two novel species represented by CCBAU 51649 T and CCBAU 53363 T . Strain CCBAU 51649 T shared 94, 93.4, 92.3 and 94.9 % and CCBAU 53363 T shared 91.4, 94.5, 94.6 and 97.7 % sequence similarity for the glnII , recA, gyrB and dnaK genes, respectively, with respect to the closest related species Bradyrhizobium manausense BR 3351 T and Bradyrhizobium yuanmingense CCBAU 10071 T . Summed feature 8 and C 16 : 0 were the predominant fatty acid components for strains CCBAU 51649 T and CCBAU 53363 T . DNA–DNA hybridization and analysis of phenotypic characteristics also distinguished these strains from the closest related Bradyrhizobium species. The strains formed effective nodules on Arachis hypogaea , Lablab purpureus and Aeschynomene indica , and they had identical nodA genes to Bradyrhizobium sp. PI237 but were phylogenetically divergent from other available nodA genes at less than 66 % similarity. Based in these results, strains CCBAU 51649 T ( = CGMCC 1.15034 T  = LMG 28620 T ) and CCBAU 53363 T ( = CGMCC 1.15035 T  = LMG 28621 T ) are designated the type strains of two novel species, for which the names Bradyrhizobium guangdongense sp. nov. and Bradyrhizobium guangxiense sp. nov. are proposed, respectively.
    Type of Medium: Online Resource
    ISSN: 1466-5026 , 1466-5034
    URL: Article
    DOI: 10.1099/ijsem.0.000629
    Language: English
    Publisher: Microbiology Society
    Publication Date: 2015
    detail.hit.zdb_id: 215062-1
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  • 4
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    Bradyrhizobium lablabi sp. nov., isolated from effective nodules of Lablab purpureus and Arachis hypogaea
    Microbiology Society ; 2011
    In:  International Journal of Systematic and Evolutionary Microbiology Vol. 61, No. 10 ( 2011-10-01), p. 2496-2502
    Details
    In: International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 61, No. 10 ( 2011-10-01), p. 2496-2502
    Abstract: Five strains isolated from root nodules of Lablab purpureus and Arachis hypogaea grown in the Anhui and Sichuan provinces of China were classified as members of the genus Bradyrhizobium . These strains had identical 16S rRNA gene sequences which shared 99.48 %, 99.48 % and 99.22 % similarity with the most closely related strains of Bradyrhizobium jicamae PAC68 T , Bradyrhizobium pachyrhizi PAC48 T and Bradyrhizobium elkanii USDA 76 T , respectively. A study using a polyphasic approach, including 16S rRNA gene RFLP, IGS-RFLP, BOX-PCR, comparative sequence analysis of the 16S–23S rRNA intergenic spacer (IGS) and the recA , atpD and glnII genes, DNA–DNA hybridization and phenotypic tests, showed that the five strains clustered into a coherent group that differentiated them from all recognized species of the genus Bradyrhizobium . Sequencing of nifH and nodC genes and cross-nodulation tests showed that the representative strains CCBAU 23086 T , CCBAU 23160 and CCBAU 61434, isolated from different plants, had identical nifH and nodC gene sequences and were all able to nodulate Lablab purpureus , Arachis hypogaea and Vigna unguiculata . Based upon these results, the name Bradyrhizobium lablabi sp. nov. is proposed for this novel species and strain CCBAU 23086 T ( = LMG 25572 T  = HAMBI 3052 T ) is designated as the type strain. The DNA G + C mol% is 60.14 ( T m ).
    Type of Medium: Online Resource
    ISSN: 1466-5026 , 1466-5034
    URL: Article
    DOI: 10.1099/ijs.0.027110-0
    Language: English
    Publisher: Microbiology Society
    Publication Date: 2011
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  • 5
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    Rhizobium herbae sp. nov. and Rhizobium giardinii-related bacteria, minor microsymbionts of various wild legumes in China
    Microbiology Society ; 2011
    In:  International Journal of Systematic and Evolutionary Microbiology Vol. 61, No. 8 ( 2011-08-01), p. 1912-1920
    Details
    In: International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 61, No. 8 ( 2011-08-01), p. 1912-1920
    Abstract: Seven Rhizobium strains associated with various legume species grown in different geographical regions of China were defined into four genomic groups related to Rhizobium giardinii , based upon ribosomal intergenic spacer RFLP, phylogenies of 16S rRNA and housekeeping ( atpD , recA and glnII ) genes, and DNA relatedness. Three strains in group I were classified as R. giardinii , as they showed high gene sequence similarities ( 〉 97 %) and DNA relatedness (64.3–67.5 %) to R . giardinii H152 T . Groups II, III and IV differed from all defined Rhizobium species based upon the consensus of all analyses. As group II contained two strains that originated from two distinct populations, we propose this group as a novel species, Rhizobium herbae sp. nov., with strain CCBAU 83011 T ( = LMG 25718 T  = HAMBI 3117 T ) as the type strain.
    Type of Medium: Online Resource
    ISSN: 1466-5026 , 1466-5034
    URL: Article
    DOI: 10.1099/ijs.0.024943-0
    Language: English
    Publisher: Microbiology Society
    Publication Date: 2011
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  • 6
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    Rhizobium vallis sp. nov., isolated from nodules of three leguminous species
    Microbiology Society ; 2011
    In:  International Journal of Systematic and Evolutionary Microbiology Vol. 61, No. 11 ( 2011-11-01), p. 2582-2588
    Details
    In: International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 61, No. 11 ( 2011-11-01), p. 2582-2588
    Abstract: Four bacterial strains isolated from root nodules of Phaseolus vulgaris , Mimosa pudica and Indigofera spicata plants grown in the Yunnan province of China were identified as a lineage within the genus Rhizobium according to the analysis of 16S rRNA gene sequences, sharing most similarity with Rhizobium lusitanum P1-7 T (99.1 % sequence similarity) and Rhizobium rhizogenes IAM 13570 T (99.0 %). These strains also formed a distinctive group from the reference strains for defined species of the genus Rhizobium in a polyphasic approach, including the phylogenetic analyses of the 16S rRNA gene and housekeeping genes ( recA, atpD, glnII ), DNA–DNA hybridization, BOX-PCR fingerprinting, phenotypic characterization, SDS-PAGE of whole-cell proteins, and cellular fatty acid profiles. All the data obtained in this study suggested that these strains represent a novel species of the genus Rhizobium , for which the name Rhizobium vallis sp. nov. is proposed. The DNA G+C content (mol%) of this species varied between 60.9 and 61.2 ( T m ). The type strain of R. vallis sp. nov. is CCBAU 65647 T ( = LMG 25295 T  = HAMBI 3073 T ), which has a DNA G+C content of 60.9 mol% and forms effective nodules on Phaseolus vulgaris .
    Type of Medium: Online Resource
    ISSN: 1466-5026 , 1466-5034
    URL: Article
    DOI: 10.1099/ijs.0.026484-0
    Language: English
    Publisher: Microbiology Society
    Publication Date: 2011
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  • 7
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    Bradyrhizobium huanghuaihaiense sp. nov., an effective symbiotic bacterium isolated from soybean (Glycine max L.) nodules
    Microbiology Society ; 2012
    In:  International Journal of Systematic and Evolutionary Microbiology Vol. 62, No. Pt_8 ( 2012-08-01), p. 1951-1957
    Details
    In: International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 62, No. Pt_8 ( 2012-08-01), p. 1951-1957
    Abstract: In a survey of the biodiversity and biogeography of rhizobia associated with soybean ( Glycine max L.) in different sites of the Northern (Huang-Huai-Hai) Plain of China, ten strains were defined as representing a novel genomic species in the genus of Bradyrhizobium . They were distinguished from defined species in restriction fragment length polymorphism (RFLP) analysis of the 16S rRNA gene and the 16S–23S rRNA gene intergenic spacer (IGS). In BOX-PCR, these strains presented two patterns that shared 94 % similarity, demonstrating that they were a homogenous group with limited diversity. In phylogenetic analyses of the 16S rRNA gene, IGS and housekeeping gene sequences, four representative strains formed a distant lineage within the genus Bradyrhizobium , which was consistent with the results of DNA–DNA hybridization. The strains of this novel group formed effective nodules with G. max , Glycine soja and Vigna unguiculata in cross-nodulation tests and harboured symbiotic genes ( nodC and nifH ) identical to those of reference strains of Bradyrhizobium japonicum , Bradyrhizobium liaoningense and ‘ Bradyrhizobium daqingense ’ originating from soybean, implying that the novel group may have obtained these symbiotic genes by lateral gene transfer. In analyses of cellular fatty acids and phenotypic features, some differences were found between the novel group and related Bradyrhizobium species, demonstrating that the novel group is distinct phenotypically from other Bradyrhizobium species. Based upon the data obtained, these strains are proposed to represent a novel species, Bradyrhizobium huanghuaihaiense sp. nov., with CCBAU 23303 T ( = LMG 26136 T  = CGMCC 1.10948 T  = HAMBI 3180 T ) as the type strain. The DNA G+C content of strain CCBAU 23303 T is 61.5 mol% ( T m ).
    Type of Medium: Online Resource
    ISSN: 1466-5026 , 1466-5034
    URL: Article
    DOI: 10.1099/ijs.0.034546-0
    Language: English
    Publisher: Microbiology Society
    Publication Date: 2012
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  • 8
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    Mesorhizobium silamurunense sp. nov., isolated from root nodules of Astragalus species
    Microbiology Society ; 2012
    In:  International Journal of Systematic and Evolutionary Microbiology Vol. 62, No. Pt_9 ( 2012-09-01), p. 2180-2186
    Details
    In: International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 62, No. Pt_9 ( 2012-09-01), p. 2180-2186
    Abstract: Four rhizobial strains representing a previously defined novel group in the genus Mesorhizobium and isolated from Astragalus species in China were further characterized using a polyphasic approach. Phylogenetic analysis of 16S rRNA gene sequences showed that these Gram-negative bacteria belonged to the genus Mesorhizobium , with Mesorhizobium plurifarium LMG 11892 T as the closest neighbour sharing a sequence similarity of 99.8 %. Comparative sequence analysis of the atpD , recA , glnII , rpoB , nodC and nifH genes, SDS-PAGE of whole-cell soluble proteins, DNA–DNA hybridization, fatty acid profiles and a series of phenotypic and physiological tests differentitated the novel group from all recognized species of the genus Mesorhizobium . Based on the data obtained in the present and previous studies, this group represents a novel species within the genus Mesorhizobium , for which the name Mesorhizobium silamurunense sp. nov. is proposed. The type strain is CCBAU 01550 T ( = HAMBI 3029 T  = LMG 24822 T ), and could form effective nodules on Astragalus membranaceus , Astragalus adsurgens and Caragana intermedia , and ineffective nodules on Phaseolus vulgaris in cross-nodulation tests.
    Type of Medium: Online Resource
    ISSN: 1466-5026 , 1466-5034
    URL: Article
    DOI: 10.1099/ijs.0.031229-0
    Language: English
    Publisher: Microbiology Society
    Publication Date: 2012
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  • 9
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    Rhizobium sophorae sp. nov. and Rhizobium sophoriradicis sp. nov., nitrogen-fixing rhizobial symbionts of the medicinal legume Sophora flavescens
    Microbiology Society ; 2015
    In:  International Journal of Systematic and Evolutionary Microbiology Vol. 65, No. Pt_2 ( 2015-02-01), p. 497-503
    Details
    In: International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 65, No. Pt_2 ( 2015-02-01), p. 497-503
    Abstract: Five bacterial strains representing 45 isolates originated from root nodules of the medicinal legume Sophora flavescens were defined as two novel groups in the genus Rhizobium based on their phylogenetic relationships estimated from 16S rRNA genes and the housekeeping genes recA , glnII and atpD . These groups were distantly related to Rhizobium leguminosarum USDA 2370 T (95.6 % similarity for group I) and Rhizobium phaseoli ATCC 14482 T (93.4 % similarity for group II) in multilocus sequence analysis. In DNA–DNA hybridization experiments, the reference strains CCBAU 03386 T (group I) and CCBAU 03470 T (group II) showed levels of relatedness of 17.9–57.8 and 11.0–42.9 %, respectively, with the type strains of related species. Both strains CCBAU 03386 T and CCBAU 03470 T contained ubiquinone 10 (Q-10) as the major respiratory quinone and possessed 16 : 0, 18 : 0, 19 : 0 cyclo ω8 c , summed feature 8 and summed feature 2 as major fatty acids, but did not contain 20 : 3 ω6,8,12 c . Phenotypic features distinguishing both groups from all closely related species of the genus Rhizobium were found. Therefore, two novel species, Rhizobium sophorae sp. nov. for group I (type strain CCBAU 03386 T  = E5 T  = LMG 27901 T  = HAMBI 3615 T ) and Rhizobium sophoriradicis sp. nov. for group II (type strain CCBAU 03470 T  = C-5-1 T  = LMG 27898 T  = HAMBI 3510 T ), are proposed. Both groups were able to nodulate Phaseolus vulgaris and their hosts of origin ( Sophora flavescens ) effectively and their nodulation gene nodC was phylogenetically located in the symbiovar phaseoli .
    Type of Medium: Online Resource
    ISSN: 1466-5026 , 1466-5034
    URL: Article
    DOI: 10.1099/ijs.0.068916-0
    Language: English
    Publisher: Microbiology Society
    Publication Date: 2015
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  • 10
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    Mesorhizobium albiziae sp. nov., a novel bacterium that nodulates Albizia kalkora in a subtropical region of China
    Microbiology Society ; 2007
    In:  International Journal of Systematic and Evolutionary Microbiology Vol. 57, No. 6 ( 2007-06-01), p. 1192-1199
    Details
    In: International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 57, No. 6 ( 2007-06-01), p. 1192-1199
    Type of Medium: Online Resource
    ISSN: 1466-5026 , 1466-5034
    URL: Article
    DOI: 10.1099/ijs.0.64363-0
    Language: English
    Publisher: Microbiology Society
    Publication Date: 2007
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