Zhang Jiarong, Wei Jian, Li Dongxu, Kong Xiangying, Rengel Zed, Chen Limei, Yang Ye, Cui Xiuming, Chen Qi
Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China.
Faculty of Architecture and City Planning, Kunming University of Science and Technology, Kunming, China.
Front Plant Sci. 2017 Oct 17;8:1757. doi: 10.3389/fpls.2017.01757. eCollection 2017.
Aluminum (Al) toxicity is a key factor limiting plant growth and crop production on acid soils. Increasing the plant Al-detoxification capacity and/or breeding Al-resistant cultivars are a cost-effective strategy to support crop growth on acidic soils. The plasma membrane H-ATPase plays a central role in all plant physiological processes. Changes in the activity of the plasma membrane H-ATPase through regulating the expression and phosphorylation of this enzyme are also involved in many plant responses to Al toxicity. The plasma membrane H-ATPase mediated H influx may be associated with the maintenance of cytosolic pH and the plasma membrane gradients as well as Al-induced citrate efflux mediated by a H-ATPase-coupled MATE co-transport system. In particular, modulating the activity of plasma membrane H-ATPase through application of its activators (e.g., magnesium or IAA) or using transgenics has effectively enhanced plant resistance to Al stress in several species. In this review, we critically assess the available knowledge on the role of the plasma membrane H-ATPase in plant responses to Al stress, incorporating physiological and molecular aspects.
铝（Al）毒性是限制酸性土壤上植物生长和作物产量的关键因素。提高植物的铝解毒能力和/或培育耐铝品种是支持酸性土壤上作物生长的一种经济有效的策略。质膜H-ATP酶在所有植物生理过程中起着核心作用。通过调节该酶的表达和磷酸化来改变质膜H-ATP酶的活性也参与了许多植物对铝毒性的反应。质膜H-ATP酶介导的H内流可能与细胞质pH值和质膜梯度的维持以及由H-ATP酶偶联的MATE共转运系统介导的铝诱导的柠檬酸外流有关。特别是，通过应用其激活剂（如镁或吲哚乙酸）或使用转基因技术调节质膜H-ATP酶的活性，已在多个物种中有效增强了植物对铝胁迫的抗性。在这篇综述中，我们批判性地评估了关于质膜H-ATP酶在植物对铝胁迫反应中的作用的现有知识，涵盖了生理和分子方面。
