Mesh : Ecosystem Fabaceae / genetics Nitrogen Fixation / genetics Plant Physiological Phenomena Plant Roots Rhizobium / genetics Root Nodules, Plant / genetics microbiology physiology Species Specificity Symbiosis / genetics

来  源:   DOI:10.7868/s0555109913030148

Abstract:
The review summarizes the results of studies on the comigration of tubercular bacteria and bean plants to new habitats, which is often accompanied by a decrease in the symbiosis efficiency due to a loss of the diversity of genes responsible for the interaction. This migration may lead to a rise in new symbionts as a result of gene transfers from initial symbionts to local bacteria. It was demonstrated that typically new symbionts lack an ability for N2 fixation but are highly competitive, blocking the inoculation of bean cultures by industrial strains. The design of coadapted systems of recognition and signal interaction of partners is a perspective approach to ensure competitive advantages of efficient rhizobia strains introduced into agrocenoses, together with host plants, over inactive local strains.
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