| a stomatin-like protein encoded by the slp gene of rhizobium etli is required for nodulation competitiveness on the common bean. | rhizobium etli strain tal182 is a competitive strain for effective nodulation of beans. from this strain, a novel gene was isolated, slp, which is 669 bp in size and required for nodulation competition on the common bean. the slp knockout mutant of tal182 is defective in nodulation competition, shows reduced growth in the presence of 200 mm nacl, kcl or licl and is complemented by the cloned slp gene. the deduced amino acid sequence of slp shows 66-72% similarity to stomatin proteins of homo sap ... | 1998 | 9782511 |
| diversity of rhizobia from nodules of the leguminous tree gliricidia sepium, a natural host of rhizobium tropici. | the rhizobium species that nodulate the legume tree gliricidia sepium were analyzed by phenotypic characteristics (including nodule formation in different hosts), pcr-rflp patterns and sequences of 16s rrna genes, multilocus enzyme electrophoresis, and plasmid patterns. strains of rhizobium tropici type a and b, sinorhizobium spp., and rhizobium etli bv. phaseoli were encountered in g. sepium nodules and their presence depended on the site sampled. | 2002 | 12115061 |
| reclassification of rhizobium tropici type a strains as rhizobium leucaenae sp. nov. | rhizobium tropici is a well-studied legume symbiont characterized by high genetic stability of the symbiotic plasmid and tolerance to tropical environmental stresses such as high temperature and low soil ph. however, high phenetic and genetic variabilities among r. tropici strains have been largely reported, with two subgroups, designated type a and b, already defined within the species. a polyphasic study comprising multilocus sequence analysis, phenotypic and genotypic characterizations, inclu ... | 2011 | 21742822 |
| genomic basis of broad host range and environmental adaptability of rhizobium tropici ciat 899 and rhizobium sp. prf 81 which are used in inoculants for common bean (phaseolus vulgaris l.). | rhizobium tropici ciat 899 and rhizobium sp. prf 81 are α-proteobacteria that establish nitrogen-fixing symbioses with a range of legume hosts. these strains are broadly used in commercial inoculants for application to common bean (phaseolus vulgaris) in south america and africa. both strains display intrinsic resistance to several abiotic stressful conditions such as low soil ph and high temperatures, which are common in tropical environments, and to several antimicrobials, including pesticides ... | 2012 | 23270491 |
| genome of rhizobium leucaenae strains cfn 299(t) and cpao 29.8: searching for genes related to a successful symbiotic performance under stressful conditions. | common bean (phaseolus vulgaris l.) is the most important legume cropped worldwide for food production and its agronomic performance can be greatly improved if the benefits from symbiotic nitrogen fixation are maximized. the legume is known for its high promiscuity in nodulating with several rhizobium species, but those belonging to the rhizobium tropici "group" are the most successful and efficient in fixing nitrogen in tropical acid soils. rhizobium leucaenae belongs to this group, which is ab ... | 2016 | 27485828 |
| novel rhizobium lineages isolated from root nodules of the common bean (phaseolus vulgaris l.) in andean and mesoamerican areas. | the taxonomic affiliations of nineteen root-nodule bacteria isolated from the common bean (phaseolus vulgaris l.) in mexico, ecuador and brazil were investigated by analyses of 16s rrna and of four protein-coding housekeeping genes. one strain from mexico could be assigned to rhizobium etli and two from brazil to rhizobium leucaenae, whereas another from mexico corresponded to a recently described bean-nodulating species-level lineage related to r. etli and rhizobium phaseoli. ten strains isolat ... | 2013 | 23764913 |