高盐是限制作物生长、发育和产量的最严重的非生物胁迫之一.长期以来,改善作物的耐盐性一直是一个伟大的目标.然而,由于耐盐反应是一个极为复杂的过程,过去,通过传统的育种和遗传工程取得的成功有限.近十年来,由于分子生物学的发展,发现了一些与耐盐相关的新基因,对于这些基因的表达方式及其在耐盐反应中的作用已逐步得到了解,这为转基因工程提供了新的材料.通过控制耐盐相关基因在植物体内的表达,已获得了一些提高耐盐性的转基因植物,展示了诱人的前景,但该领域研究仍然存在许多困难和问题,文章重点讨论耐盐转基因植物的进展.%High salinity is one of the major abiotic stresses which constraints crop plant growth, development and productivity in many places in the world. To improve the tolerance of plants to high salinity has been an important goal for a long time. Past efforts through traditional breeding and genetic engineering have had limited success owing to the genetic complexity of stress responses. In the last ten years the discovery of salt resistance-related novel genes, determination of their expression patterns in response to salinity, and improved understanding of their roles in salt stress adaptations, have paved the way for new transgenic strategies. By manipulating salt tolerance-related genes in plants, many transgenic plants with enhanced salt tolerant have been obtained. All these have unfolded an attractive prospect, but there are still lots of difficulties and problems. This paper will highlight and discuss the progress in the study of transgenic salt-tolerance plants.
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