整株水平上Na^+转运体与植物的抗盐性

Na^+ Transport and Plant Salt Resistance at the Whole Plant Level

植物可以利用不同的机制来维持Na+稳态,从而增强植物的抗盐性。这些机制包括:限制Na+的内流;增大Na+的外排;减少Na+向地上部分的运输;把进入地上部分的Na+分散到特殊部分(如老叶)或通过泌盐结构排出体外或通过韧皮部的再循环回到根部。本文简要介绍整株水平上Na+转运体与植物抗盐性的研究进展。

Plants can maintain Na^＋ homeostasis to increase salt resistance by several mechanisms, which include limiting Na^＋ influx, strengthening Na^＋ efflux, lessening Na^＋ transport to the shoot, distributing Na^＋ of shoots to particular parts （e.g., old leaves）, secreting Na^＋ outside the leaves by a salt-secreting structure or transporting Na^＋ to the root by phloem recirculation. This paper introduces advances in research into the roles of Na^＋ transportation in salt resistance of plants at the whole plant level.