Expression of an apoplast-localized BURP-domain protein from soybean (GmRD22) enhances tolerance towards abiotic stress
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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.
著者Wang HM, Zhou L, Fu YP, Cheung MY, Wong FL, Phang TH, Sun ZX, Lam HM
期刊名稱Plant, Cell and Environment
出版年份2012
月份11
日期1
卷號35
期次11
出版社WILEY-BLACKWELL PUBLISHING, INC
頁次1932 - 1947
國際標準期刊號0140-7791
電子國際標準期刊號1365-3040
語言英式英語
關鍵詞apoplast; BURP domain; lignin; peroxidase; protein targeting
Web of Science 學科類別Plant Sciences; PLANT SCIENCES

上次更新時間 2020-06-08 於 03:13