Xylan O-Acetylation Impacts Xylem Development and Enzymatic Recalcitrance as Indicated by the Arabidopsis Mutant tb129

作     者：Guangyan Xiong Kun Cheng Markus Pauly 

作者机构：Energy Biosciences Institute University of California Berkeley CA 94720 USA Department of Plant and Microbial Biology University of California Berkeley CA 94720 USA 

出 版 物：《Molecular Plant》 (分子植物（英文版）)

年 卷 期：2013年第6卷第4期

页      面：1373-1375页

核心收录：

学科分类：0710[理学-生物学] 081702[工学-化学工艺] 07[理学] 08[工学] 0817[工学-化学工程与技术] 071007[理学-遗传学] 

基　　金：funded by the Energy Bioscience Institute 

主　　题：O-Acetylation Enzymatic Recalcitrance Arabidopsis 

摘      要：Dear Editor, Plant cell walls consist of a complex composite of the poly- saccharides cellulose, various hemicelluloses, pectic polysaccharides, and the polyphenol lignin. Most cell wall polysaccharides are O-acetylated to varying extents, depending on plant spe- cies and tissue type （Gille and Pauly, 2012）. However, the function of this substituent in planta remains enigmatic. Recently, several proteins have been identified that mediate polysac- charide O-acetylation in the plant model species Arabidopsis thaliana （Gille and Pauly, 2012）. One protein, a member of the ＇trichome birefringence-like＇ （TBL） protein family, AXY4/ TBL27, was proven to be required for the specific O-acetylation of the hemicellulose xyloglucan representing a potential xylo- glucan O-acetyltransferase （Gille et al., 2011）. Other TBL mem- bers （there are a total of 46 members in Arabidopsis; Bischoff et al., 2010） might thus be involved in contributing to the O-acetylation of the other wall polymers （Gille et al., 2011）.