| case of localized recombination in 23s rrna genes from divergent bradyrhizobium lineages associated with neotropical legumes. | enzyme electrophoresis and rrna sequencing were used to analyze relationships of bradyrhizobium sp. nodule bacteria from four papilionoid legumes (clitoria javitensis, erythrina costaricensis, rhynchosia pyramidalis, and desmodium axillare) growing on barro colorado island (bci), panama. bacteria with identical multilocus allele profiles were commonly found in association with two or more legume genera. among the 16 multilocus genotypes (electrophoretic types [ets]) detected, six ets formed a cl ... | 2001 | 11319084 |
| phylogeny and taxonomy of a diverse collection of bradyrhizobium strains based on multilocus sequence analysis of the 16s rrna gene, its region and glnii, reca, atpd and dnak genes. | the genus bradyrhizobium encompasses a variety of bacteria that can live in symbiotic and endophytic associations with legumes and non-legumes, and are characterized by physiological and symbiotic versatility and broad geographical distribution. however, despite indications of great genetic variability within the genus, only eight species have been described, mainly because of the highly conserved nature of the 16s rrna gene. in this study, 169 strains isolated from 43 different legumes were ana ... | 2009 | 19628593 |
| changes in population occupancy of bradyrhizobia under different temperature regimes. | to elucidate how temperature affects bradyrhizobial ecology, long-term incubations of bradyrhizobium japonicum usda 6(t), 38, and 123 and of bradyrhizobium elkanii usda 76(t) were conducted under various temperature conditions. proliferative traits in liquid culture and population occupancies in soil microcosms were compared. the occupancies of usda 76(t) and usda 123 in soil microcosms during long-term incubation changed with the temperature conditions. these results suggest that temperature is ... | 2010 | 21576887 |
| bradyrhizobium lablabi sp. nov., isolated from effective nodules of lablab purpureus and arachis hypogaea grown in southern china. | five strains isolated from root nodules of lablab purpureus and arachis hypogaea grown in anhui and sichuan provinces of china were classified within the genus bradyrhizobium. these strains had identical 16s rrna nucleotide sequences which shared 99.22% and 99.48% similarities with the most related strains of bradyrhizobium jicamae pac 68(t), bradyrhizobium pachyrhizi pac 48(t) and bradyrhizobium elkanii usda 76(t). polyphasic approaches including 16s rrna gene rflp, igs-rflp, box-pcr, comparati ... | 2010 | 21112989 |
| the structure of a novel neutral lipid a from the lipopolysaccharide of bradyrhizobium elkanii containing three mannose units in the backbone. | the chemical structure of the lipid a of the lipopolysaccharide (lps) from bradyrhizobium elkanii usda 76 (a member of the group of slow-growing rhizobia) has been established. it differed considerably from lipids a of other gram-negative bacteria, in that it completely lacks negatively charged groups (phosphate or uronic acid residues); the glucosamine (glcpn) disaccharide backbone is replaced by one consisting of 2,3-dideoxy-2,3-diamino-d-glucopyranose (glcpn3n) and it contains two long-chain ... | 2010 | 20087912 |