| rhizobium yanglingense sp. nov., isolated from arid and semi-arid regions in china. | a novel rhizobial group, cluster 9, defined in previous research [tan, z. y., wang, e. t., peng, g. x., zhu, m. e., martinez-romero, e. & chen, w. x. (1999). int j syst bacteriol 49, 1457-1469], was further characterized by determination of dna base composition, whole-cell protein sds-page analysis, dna-dna hybridization, 16s rrna gene sequencing and host specificity. these isolates were collected from the wild legumes amphicarpaea trisperma, coronilla varia and gueldenstaedtia multiflora growin ... | 2001 | 11411714 |
| evolutionary genetics and biogeographic structure of rhizobium gallicum sensu lato, a widely distributed bacterial symbiont of diverse legumes. | we used phylogenetic and population genetics approaches to evaluate the importance of the evolutionary forces on shaping the genetic structure of rhizobium gallicum and related species. we analysed 54 strains from several populations distributed in the northern hemisphere, using nucleotide sequences of three 'core' chromosomal genes (rrs, glnii and atpd) and two 'auxiliary' symbiotic genes (nifh and nodb) to elucidate the biogeographic history of the species and symbiotic ecotypes (biovarieties) ... | 2005 | 16262857 |
| genetic diversity and symbiotic evolution of rhizobia from root nodules of coronilla varia. | ninety symbiotic rhizobial isolates from root nodules of coronilla varia growing in the shaanxi province of china were characterized. combined with the results of rflp patterns, six genotypes were defined among the rhizobial strains and they were divided into three genomic genera. these included mesorhizobium sp., m. alhagi, m. amorphae, m. metallidurans/m. gobiense as the dominant group (86.7%), and rhizobium yanglingense and agrobacterium tumefaciens as the minor groups, according to analysis ... | 2013 | 23245852 |
| genetic diversity, community structure and distribution of rhizobia in the root nodules of caragana spp. from arid and semi-arid alkaline deserts, in the north of china. | the genetic diversity of 88 caragana nodule rhizobial isolates, collected from arid and semi-arid alkaline sandy soils in the north of china, was assessed by pcr-rflp of the 16s rrna gene and the 16s-23s igs, as well as the phylogenies of housekeeping genes (atpd, glnii and reca) and symbiotic genes (nodc and nifh). of the 88 strains, 69 were placed in the genus mesorhizobium, 16 in rhizobium and 3 in bradyrhizobium. mesorhizobium amorphae, mesorhizobium septentrionale, mesorhizobium temperatum ... | 2012 | 22463809 |
| rhizobium halotolerans sp. nov., isolated from chloroethylenes contaminated soil. | the strain designated as ab21(t) was isolated from chloroethylenes contaminated soil. cells are gram-negative, aerobic, non-spore-forming, and motile rods. phylogenetic analysis based on 16s rrna gene sequence showed that it belonged to the genus rhizobium, and was closely related to rhizobium sullae is 123(t) (97.4 %), rhizobium yanglingense sh 22623(t) (97.2 %), rhizobium gallicum r 602sp(t) (97.1 %), rhizobium alamii gbv 016(t) (97.0 %), and rhizobium monogolense usda 1844(t) (97.0 %). it sho ... | 2013 | 23377488 |
| rhizobium azibense sp. nov., a nitrogen fixing bacterium isolated from root-nodules of phaseolus vulgaris. | three microbial strains isolated from common beans, 23c2t (tunisia), gr42 (spain) and ie4868 (mexico), which have been identified previously as representing a genomic group closely related to rhizobium gallicum, are further studied here. their 16s rrna genes showed 98.5-99% similarity with rhizobium loessense ccbau 7190bt, r. gallicum r602spt, rhizobium mongolense usda 1844t and rhizobium yanglingense ccbau 71623t. phylogenetic analysis based on reca, atpd, dnak and thrc sequences showed that th ... | 2014 | 24478208 |
| rhizobium flavum sp. nov., a triazophos-degrading bacterium isolated from soil under the long-term application of triazophos. | a gram-stain-negative, non-motile, pale yellow, rod-shaped bacterial strain, yw14(t), was isolated from soil and its taxonomic position was investigated by a polyphasic study. strain yw14(t) did not form nodules on three different legumes, and the nodd and nifh genes were not detected by pcr. strain yw14(t) contained q-10 as the predominant ubiquinone. the major cellular fatty acid was c(18 : 1)ω7c. phylogenetic analyses based on 16s rrna gene sequences and seven housekeeping gene sequences (rec ... | 2014 | 24639241 |
| molecular and culture dependent characterization of endolithic bacteria in two beach sand samples and description of rhizobium endolithicum sp. nov. | endolithic metagenome analysis of two beach samples collected form chilika, odisha, india indicated rich bacterial diversity. while the metagenome analysis of sample one yielded 16s rrna gene sequences which represent six phyla and 16 genera, sample two yielded very rich diversity representing 17 phyla and 286 genera. six species of bacteria were isolated from the endolithic enrichments and most of them have 16s rrna gene sequence similarity of >99 % with known taxa, except for strain jc140(t) h ... | 2013 | 24104485 |