The role of monovalent cation transporters in plant responses to salinity
The role of monovalent cation transporters in plant responses to salinity
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DOI：
10.1093/jxb/erj001
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发表时间：
2006-03-01
影响因子：
6.9
通讯作者：
Maathuis, FJM
中科院分区：
文献类型：
--
作者：
Maathuis, FJM
暴露在高水平的NaCl环境中会影响植物的水分关系，并以细胞积累Cl-，特别是Na+离子的形式产生离子胁迫。然而，盐胁迫也严重影响其他离子如Ca2+、K+和NO3-的稳态，因此需要深入了解这些营养物质在盐胁迫下是如何改变运输和分区的。基因组学方法可以极大地帮助鉴定基因，因此潜在的基因产物，涉及植物盐度。文献和公共数据库都包含许多基因组学研究的结果，在本报告中，这些数据在阳离子膜运输和盐度的背景下进行了整理。由于存在较大的内在变异性，并且排除了主要受转录后调控的基因产物，因此孤立的基因组学方法的有效性较低。然而，结合互补的方法，转录组学可以帮助识别重要的转录本和生理过程之间的相关关联。该分析确定了(i)维管K+循环，（ii）根梢Ca2+转运，以及（iii）过渡金属稳态是植物对盐胁迫反应的潜在重要方面。
Exposure to high ambient levels of NaCl affects plant water relations and creates ionic stress in the form of the cellular accumulation of Cl- and, in particular, Na+ ions. However, salt stress also impacts heavily on the homeostasis of other ions such as Ca2+, K+, and NO3- and therefore requires insights into how transport and compartmentation of these nutrients is altered during salinity stress. A genomics approach can greatly help with the identification of genes, and therefore potentially gene products, that are involved in plant salinity. Both the literature and public databases contain the results of many genomics studies and, in this report, those data are collated in the context of cation membrane transport and salinity. The efficacy of genomics approaches in isolation is low due to large inherent variability and the exclusion of gene products that are predominantly regulated post-transcriptionally. In conjunction with complementary approaches, however, transcriptomics can help identify important transcripts and relevant associations between physiological processes. This analysis identified (i) vascular K+ circulation, (ii) root shoot translocation of Ca2+, and (iii) transition metal homeostasis as potentially important aspects of the plant response to salt stress.