Abstract：
Plasma membrane H+-ATPases (PMAs) pump H+ out of the cytoplasm by consuming ATP to generate a membrane potential and proton motive force for the transmembrane transport of nutrients into and out of plant cells. PMAs are involved in nutrient acquisition by regulating root growth, nutrient uptake, and translocation, as well as the establishment of symbiosis with arbuscular mycorrhizas. Under nutrient stresses, PMAs are activated to pump more H+ and promote organic anion excretion, thus improving nutrient availability in the rhizosphere. Herein we review recent progress in the physiological functions and the underlying molecular mechanisms of PMAs in the efficient acquisition and utilization of various nutrients in plants. We also discuss perspectives for the application of PMAs in improving crop production and quality.
摘要：
质膜H-ATPases（PMAs）通过消耗ATP将H泵出细胞质，以产生膜电位和质子动力，从而使营养物质跨膜转运进出植物细胞。PMA通过调节根系生长参与养分获取，营养吸收，和易位，以及与丛枝菌根共生的建立。在营养压力下，PMA被激活以泵送更多的H并促进有机阴离子排泄，从而提高根际的养分利用率。本文综述了PMAs在植物有效获取和利用各种养分方面的生理功能和潜在分子机制的最新进展。我们还讨论了PMA在提高作物产量和质量方面的应用前景。
