Department of Biomedical Science & Engineering, Konkuk University, Seoul 05029, Korea.
Department of Agriculture, University of Naples Federico II, Via Universita 100, I-80055 Portici, Italy.
Int J Mol Sci. 2019 Mar 1;20(5):1059. doi: 10.3390/ijms20051059.
Abiotic stresses generally cause a series of morphological, biochemical and molecular changes that unfavorably affect plant growth and productivity. Among these stresses, soil salinity is a major threat that can seriously impair crop yield. To cope with the effects of high salinity on plants, it is important to understand the mechanisms that plants use to deal with it, including those activated in response to disturbed Na⁺ and K⁺ homeostasis at cellular and molecular levels. HKT1-type transporters are key determinants of Na⁺ and K⁺ homeostasis under salt stress and they contribute to reduce Na⁺-specific toxicity in plants. In this review, we provide a brief overview of the function of HKT1-type transporters and their importance in different plant species under salt stress. Comparison between HKT1 homologs in different plant species will shed light on different approaches plants may use to cope with salinity.
非生物胁迫通常会引起一系列不利于植物生长和生产力的形态、生化和分子变化。在这些胁迫中，土壤盐度是一个主要威胁，它会严重损害作物产量。为了应对高盐度对植物的影响，了解植物用来应对盐度的机制非常重要，包括在细胞和分子水平上对扰乱的 Na⁺和 K⁺ 动态平衡的响应机制。HKT1 型转运蛋白是盐胁迫下 Na⁺和 K⁺ 动态平衡的关键决定因素，它们有助于减少植物中 Na⁺ 的特异性毒性。在这篇综述中，我们简要概述了 HKT1 型转运蛋白的功能及其在盐胁迫下不同植物物种中的重要性。不同植物物种中 HKT1 同源物的比较将揭示植物可能用来应对盐度的不同方法。
