ANALYSIS OF ALLEAL DIVERSITY OF THE NODX GENE IN BACTERIA OF THE SPECIES RHIZOBIUM LEGUMINOSARUM, BEAN SYMBIONTS TRIFOLIUM AND VAVILOVIA

Abstract

Rhizobium leguminosarumspecies is divided into two biovars according to the host plant which they have the ability to nodulate: viciaewith legumes from the tribe Fabeae, trifoliiwith legumes of the genus Trifolium. However, a separate group of symbionts of the relict plant Vavilovia formosaseparates from biovar viciae, demonstrating ancestral features of genomes. In this study, we compare the selection of the Vaviloviaand Trifoliumsymbionts in order to identify common patterns in the structure of symbiotic genes. The results show that, both these rhizobia groups share several ancestral features. The data obtained suggest that the symbionts Vaviloviaand Trifoliumcan also show some resemblance to the common ancestor of the species R. leguminosarum, which existed before the division of the species into viciaeand trifoliibiovars