The influence of mineral nitrogen on legume-rhizobium symbiosis

This review of the literature synthesizes the data on physiological mechanisms of the influence of high doses of mineral nitrogen (nitrates and ammonium) on the formation and functioning of legume-rhizobium symbiosis. The participation of phytohormonal and phenolic metabolism and active forms of oxygen and nitrogen in the symbiosis is highlighted. A close connection between these metabolic processes in the formation and functioning of legume-rhizobium symbiosis under a redundant supply of plants by mineral nitrogen is underlined.