Genetic Variation in Host-Specific Competitiveness of the Symbiont <i>Rhizobium leguminosarum</i> Symbiovar <i>viciae</i>.

ABSTRACT: Legumes of the Fabeae tribe form nitrogen-fixing root nodules resulting from symbiotic interaction with the soil bacteria Rhizobium leguminosarum symbiovar viciae (Rlv). These bacteria are all potential symbionts of the Fabeae hosts but display variable partner choice when co-inoculated in mixture. Because partner choice and symbiotic nitrogen fixation mostly behave as genetically independent traits, the efficiency of symbiosis is often suboptimal when Fabeae legumes are exposed to natural Rlv populations present in soil. A core collection of 32 Rlv bacteria was constituted based on the genomic comparison of a collection of 121 genome sequences, representative of known worldwide diversity of Rlv. A variable part of the nodD gene sequence was

SUBMITTER: Boivin S 

PROVIDER: S-EPMC8457355 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature