The research progress of organic acids metabolism in leguminousplant under phosphorus deficiency

Abstract: Under phosphorus deficiency, large amounts of organic acids were secreted by leguminous plants to promote phosphorus efficiency in the soil. This paper summarized the time course, levels and types of the organic acid in the secretion process. The efficiency of different organic acid in phosphorus activation was also compared. It is pointed out that organic acid secretion induced, but was not the only inducer, rhizosphere acidification. The organic acids were mainly synthesized in root system, and their synthesis had a tight relationship with carbon metabolism. Finally, the research direction of organic metabolism in future was discussed.