Isolation and characterization of receptor-like protein kinase WELP1 in wheat

文献类型： 外文期刊

第一作者： Zheng, Weijun

作者： Zheng, Weijun;Xu, Zhao-Shi;Chen, Ming;Li, Lianchen;Ma, Youzhi;Zheng, Weijun;Chai, Shoucheng

作者机构：

关键词： ERECTA protein;promoter;sub-cellular localization;induced mechanism

期刊名称：AFRICAN JOURNAL OF MICROBIOLOGY RESEARCH （ 影响因子：0.539； 五年影响因子：0.564 ）

ISSN： 1996-0808

年卷期： 2012 年 6 卷 10 期

页码：

收录情况： SCI

摘要： A cDNA clone for a receptor-like protein kinase gene (WELP1) was obtained from wheat. The clone is 3286 bp long with an open reading frame of 2734 bp long encoding a 977 amino acids containing single peptide. This deduced peptide contains four distinctive domains characteristic of receptor kinases: (1) a putative amino terminal signal sequence domain; (2) a domain with eighteen extracellular leucine-rich repeat sequences; (3) a membrane-spanning domain; and (4) a cytoplasmic protein kinase domain that contains 11 sub-domains conserved among protein kinases. WELP1 gene is expressed in glume, rataria, stem and anther. 1.7 kb upstream sequences of WELP1 were isolated and analyzed. Many cis-elements that respond to environment stimuli were found. Correspondingly, expression of WELP1 is rapidly induced by several environmental stresses such as dehydration, high salt and high temperature. A WELP1::hGFP fusion protein was found to be localized in the plasma membrane upon introduction into epidermal onion cells, suggesting that the WELP1 gene encodes a membrane protein that perceives general stress signals. Therefore, WELP1 can be a candidate gene for biotechnology engineer to improve plant abiotic stress tolerance.

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