Overview of the Structure-Function Relations Underlying the Functionality of ALMT and MATE-Type Transporters Involved in the Organic Acid Release Al-Tolerance Response
Many plants overcome the phytotoxic effects of soluble aluminum (Al3+ ) found in acid soils by releasing aluminum-chelating molecules such as low molecular weight organic acids from the root system, consequently immobilizing Al3+ at the root surface, and preventing it from entering the root cells. This well documented physiological response ( see Table I in Kochian et al. , 2004) has been the basis for a number of interdisciplinary studies involving genetic, electrophysiological, and molecular approaches aimed at identifying membrane protein candidates ( and the genes encoding them ) mediating these Al-activated transport process. Given the thermodynamic nature of organic acid efflux, anion channels were identified as plausible candidates to mediate the transport (i. e. efflux) of these organic anions down their electrochemical gradient.
Miguel Pineros Leon V Kochian
Robert W.Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
国际会议
The 7th International Symposium on Plant-Soil Interactions at Low pH(第七届低pH条件下植物-土壤交互作用国际研讨会)
广州
英文
55-56
2009-05-17（万方平台首次上网日期，不代表论文的发表时间）