An aquaporin protein is associated with drought stress tolerance

文献类型： 外文期刊

第一作者： Li, Jun

作者： Li, Jun;Wen, Hongyu;Wang, Zan;Gao, Hongwen;Wang, Xuemin;Li, Jun;Ban, Liping;Dzyubenko, Nikolay;Chapurin, Vladimir

作者机构：

关键词： Aquaporin;Abiotic stress;Galega orientalis L.;GoPIP1;Transgenic Arabidopsis

期刊名称：BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS （ 影响因子：3.575； 五年影响因子：3.381 ）

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收录情况： SCI

摘要： Water channel proteins known as aquaporins (AQPs) regulate the movement of water and other small molecules across plant vacuolar and plasma membranes; they are associated with plant tolerance of biotic and abiotic stresses. In this study, a PIP type AQPs gene, designated as GoPIP1, was cloned from Galega orientalis, a high value leguminous forage crop. The GoPIP1 gene consists of an 870 bp open reading frame encoding a protein of 289 amino acids, and belongs to the PIP1 subgroup of the PIP subfamily. The transcript level of GoPIP1 was higher in the root of G. orientalis than in the leaf and stem. The level of GoPIP1 transcript increased significantly when treated with 200 mM NaCl or 20% polyethylene glycol (PEG) 6000. Transient expression of GoPIP1 in onion epidermal cells revealed that the GoPIP1 protein was localized to the plasma membrane. Over-expression of GoPIP1 increased the rosette/root ratio and increased sensitivity to drought in transgenic Arabidopsis plants. However, GoPIP1 overexpression in Arabidopsis had no significant effect under saline condition. The present data provides a gene resource that contributes to furthering our understanding of water channel protein and their application in plant stress tolerance. (C) 2015 The Authors. Published by Elsevier Inc.

分类号： Q5

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