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首页> 外文期刊>African Journal of Biotechnology >Role of sodium and hydrogen (Na+/H+) antiporters in salt tolerance of plants: Present and future challenges
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Role of sodium and hydrogen (Na+/H+) antiporters in salt tolerance of plants: Present and future challenges

机译：钠和氢（Na + / H +）反转运蛋白在植物耐盐性中的作用：当前和未来的挑战

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摘要

Salt tolerant plants have been characterized by their ability to cope with osmotic and ionic stresses caused by elevated sodium chloride (NaCl) concentrations. For homeostatic control of Na+, plants have evolved a system of membrane channels and antiporters that facilitate the influx and efflux of sodium (Na+) ions at the roots and establish a steady state rate of entry of Na+?into the plant, compartmentation of Na+?into the cell vacuoles and transfer to various plant tissues. To enhance the salt tolerance of salt sensitive plants, genetic engineering with sodium and hydrogen (Na+/H+) antiporters is one of the preferred methods in recent years. The aim of this study is to highlight and discuss the recent progress in understanding Na+?transport in plants, and genetic engineering of plants with Na+/H+?antiporters to increase their salt stress tolerance. The present status of salt stress tolerance in transgenic plants was examined and possibilities were recommended that may further enhance salt tolerance if given proper research attention. Moreover, future challenges including environmental risk assessment confronting transgenic plants transformed with Na+/H+?antiporters were also discussed.
机译：耐盐植物的特征在于它们具有应对因氯化钠（NaCl）浓度升高而引起的渗透和离子胁迫的能力。为了对Na +进行稳态控制，植物进化了一种膜通道和反转运蛋白系统，该系统促进了根（Na +）离子在根部的流入和流出，并建立了Na +？进入植物的稳态速率，即Na +？的分隔。进入细胞液泡并转移到各种植物组织。为了提高盐敏感植物的耐盐性，近年来使用钠和氢（Na + / H +）反转运蛋白进行基因工程是首选方法之一。这项研究的目的是强调和讨论在理解植物中Na +转运以及利用Na + / H +反向转运蛋白提高其耐盐性的植物的基因工程方面的最新进展。检查了转基因植物中盐胁迫耐受性的现状，并建议了可能的方法，如果给予适当的研究关注，则可以进一步提高盐耐受性。此外，还讨论了未来的挑战，包括面临Na + / H +？反向转运体转化的转基因植物面临的环境风险评估。

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