数字农科院2.0

Expression of an apoplast-localized BURP-domain protein from soybean (GmRD22) enhances tolerance towards abiotic stress

文献类型： 外文期刊

作者： HONGMEI WANG ; LIANG ZHOU ; YAPING FU ; MING-YAN CHEUNG ; FUK-LING WONG ; TSUI-HUNG PHANG ; ZONGXIU SUN ; HON-MING LAM *

作者机构：

关键词： BURP domain;protein targeting;apoplast;peroxidase;lignin

期刊名称： Plant Cell and Environment

ISSN： 0140-7791

年卷期： 2012 年 35 卷 11 期

页码：

收录情况： JCR（2021版）

摘要： The BURP-domain fro protein family comprises a diverse group of plant-specific proteins that share a conserved BURP domain at the C terminus. However, there have been only limited studies on the functions and subcellular localization of these proteins. Members of the RD22-like subfamily are postulated to associate with stress responses due to the stress-inducible nature of some RD22-like genes. In this report, we used different transgenic systems (cells and in planta) to show that the expression of a stress-inducible RD22-like proteinm soybean (GmRD22) can alleviate salinity and osmotic stress. We also performed detailed microscopic studies using both fusion proteins and immuno-electron microscopic techniques to demonstrate the apoplast localization of GmRD22, for which the BURP domain is a critical determinant of the subcellular localization. The apoplastic GmRD22 interacts with a cell wall peroxidase and the ectopic expression of GmRD22 in both transgenic Arabidopsis thaliana and transgenic rice resulted in increased lignin production when subjected to salinity stress. It is possible that GmRD22 regulates cell wall peroxidases and hence strengthens cell wall integrity under such stress conditions.

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