Salt tolerance conferred by overexpression of a vacuolar Na+/H+ antiport in Arabidopsis
Salt tolerance conferred by overexpression of a vacuolar Na+/H+ antiport in Arabidopsis
复制标题
DOI：
10.1126/science.285.5431.1256
复制
发表时间：
1999-08-20
期刊：
影响因子：
56.9
通讯作者：
Blumwald, E
中科院分区：
文献类型：
--
作者：
Apse, MP;Aharon, GS;Blumwald, E
土壤盐分严重影响农业生产力，植物在盐胁迫下存活的一个可能机制是将钠离子从细胞质中分离出来。拟南芥液泡Na+/H+反向转运蛋白在拟南芥植物中的过表达促进了在含有200毫摩尔氯化钠的土壤中的持续生长和发育。这种耐盐性与高于正常水平的AtNHX 1转录本、蛋白质和液泡Na+/H+（钠/质子）逆向转运活性相关。这些结果证明了植物耐盐性工程的可行性。
Agricultural productivity is severely affected by soil salinity, One possible mechanism by which plants could survive salt stress is to compartmentalize sodium ions away from the cytosol. Overexpression of a vacuolar Na+/H+ antiport from Arabidopsis thaliana in Arabidopsis plants promotes sustained growth and development in soil watered with up to 200 millimolar sodium chloride. This salinity tolerance was correlated with higher-than-normal levels of AtNHX1 transcripts, protein, and vacuolar Na+/H+ (sodium/proton) antiport activity, These results demonstrate the feasibility of engineering salt tolerance in plants.