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Updated: Feb 27, 2026

Collection of Alfalfa Root Exudates to Study the Impact of Di2-ethylhexyl Phthalate on Metabolite Production
Published on: June 2, 2023
Role of root exudates in metal acquisition and tolerance
Yi-Tze Chen1, Ying Wang1, Kuo-Chen Yeh1
1Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan.
Abstract:
Plants acquire mineral nutrients mostly through the rhizosphere; they secrete a large number of metabolites into the rhizosphere to regulate nutrient availability and to detoxify undesirable metal pollutants in soils. The secreted metabolites are inorganic ions, gaseous molecules, and mainly carbon-based compounds. This review focuses on the mechanisms and regulation of low-molecular-weight organic-compound exudation in terms of metal acquisition. We summarize findings on riboflavin/phenolic-facilitated and phytosiderophore-facilitated iron acquisition and discuss recent studies of the functions and secretion mechanisms of low-molecular-weight organic acids in heavy-metal detoxification.
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