| natural endophytic association between rhizobium etli and maize (zea mays l.). | maize (zea mays) and bean (phaseolus vulgaris) have been traditionally grown in association for thousands of years in mesoamerica. from surface sterilized maize roots, we have isolated over 60 rhizobium strains that correspond to rhizobium etli bv. phaseoli (the main symbiont of bean) on the basis of 16s rrna gene restriction patterns, metabolic enzyme electropherotypes, organization of nif genes, and the ability to nodulate beans. the colonization capacity of some of the isolates was tested wit ... | 2001 | 11566384 |
| 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 |
| rhizobium etli and rhizobium gallicum nodulate common bean (phaseolus vulgaris) in a traditionally managed milpa plot in mexico: population genetics and biogeographic implications. | the stability of the genetic structure of rhizobial populations nodulating phaseolus vulgaris cultivated in a traditionally managed milpa plot in mexico was studied over three consecutive years. the set of molecular markers analyzed (including partial rrs, glnii, nifh, and nodb sequences), along with host range experiments, placed the isolates examined in rhizobium etli bv. phaseoli and rhizobium gallicum bv. gallicum. cluster analysis of multilocus enzyme electrophoresis and plasmid profile dat ... | 2003 | 12571008 |
| different species and symbiotic genotypes of field rhizobia can nodulate phaseolus vulgaris in tunisian soils. | abstract a collection of 160 isolates of rhizobia nodulating phaseolus vulgaris in three geographical regions in tunisia was characterized by restriction fragment length polymorphism analysis of polymerase chain reaction (pcr)-amplified 16s rdna, nifh and nodc genes. nine groups of rhizobia were delineated: rhizobium gallicum biovar (bv.) gallicum, rhizobium leguminosarum bv. phaseoli and bv. viciae, rhizobium etli bv. phaseoli, rhizobium giardinii bv. giardinii, and four groups related to speci ... | 2002 | 19709241 |