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Aquaporins and their function in root water transport under salt stress conditions in Eutrema salsugineum

文献类型： 外文期刊

作者： Qin, Shenghao 1 ; Liu, Yiyang 1 ; Han, Yan 1 ; Xu, Guoxin 3 ; Wan, Shubo 1 ; Cui, Feng 1 ; Li, Guowei 1 ;

作者机构： 1.Shandong Acad Agr Sci, Biotechnol Res Ctr, Shandong Prov Key Lab Crop Genet Improvement Ecol, Jinan 250100, Shandong, Peoples R China

2.Shandong Normal Univ, Coll Life Sci, Jinan 250014, Shandong, Peoples R China

3.Shandong Acad Agr Sci, Shandong Rice Res Inst, Jinan 250100, Shandong, Peoples R China

关键词： Aquaporin; E. salsugineum; Salt stress; Root hydraulic conductivity

期刊名称：PLANT SCIENCE （ 影响因子：4.729； 五年影响因子：5.132 ）

ISSN： 0168-9452

年卷期： 2019 年 287 卷

页码：

收录情况： SCI

摘要： Eutrema salsugineum is considered as extremophile model species. To gain insights into the root hydraulic conductivity and the role played by aquaporins in E. salsugineum, we investigated the aquaporin family profiles, plant water status and root hydraulic conductivity under standard (salt-free) and salt stress conditions. We found that there was no variation in the relative electric conductivity of the leaves when the salt concentration was less than 200 mM NaCl, and the transpiration rate dropped to 60.6% at 100 mM NaCl for 14 days compared to that at standard conditions. The pressure chamber techniques indicated that the root hydraulic conductivity of E. salsugineum was repressed by salt stress. However, propionic acid, usually used as an aquaporin inhibitor, unexpectedly enhanced the root hydraulic conductivity of E. salsugineum. The aquaporin family in E. salsugineum was profiled and the PIP aquaporin expression was investigated at the transcriptional and translational levels. Finally, two EsPIPs were identified to play a role in salt stress. The overall study provides evidence on how halophytes maintain their water status and aquaporin regulation pattern under salt stress conditions.

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[1]Aquaporins and their function in root water transport under salt stress conditions in Eutrema salsugineum. Qin, Shenghao,Liu, Yiyang,Han, Yan,Wan, Shubo,Cui, Feng,Li, Guowei,Qin, Shenghao,Liu, Yiyang,Han, Yan,Li, Guowei,Xu, Guoxin. 2019

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