Microbial Mechanisms of Se(VI) Reduction and Organic Selenium Formation in Paddy Soils Stimulated by Citric Acid
This study investigated microbial selenium (Se) transformation mediated by citric acid in paddy soils, demonstrating that citric acid promotes microbial Se(VI) reduction and the accumulation of selenocysteine and selenomethionine, clarifying the underlying microbial communities, metabolic pathways and functional gene mechanisms, and providing a theoretical basis for developing efficient and safe Se biofortification strategies for rice.