Roles of Arabidopsis TBL34 and TBL35 in xylan acetylation and plant growth

Plant Science : an International Journal of Experimental Plant Biology
Youxi YuanZheng-Hua Ye

Abstract

Xylan is one of the major polymers in lignocellulosic biomass and about 60% of its xylosyl residues are acetylated at O-2 and/or O-3. Because acetylation of cell wall polymers contributes to biomass recalcitrance for biofuel production, it is important to investigate the biochemical mechanism underlying xylan acetylation, the knowledge of which could be applied to custom-design biomass composition tailored for biofuel production. In this report, we investigated the functions of Arabidopsis TRICHOME BIREFRINGENCE-LIKE 34 (TBL34) and TBL35, two DUF231-containing proteins, in xylan acetylation. The TBL34 gene was found to be specifically expressed in xylem cells in stems and root-hypocotyls, and both TBL34 and TBL35 were shown to be localized in the Golgi, where xylan biosynthesis occurs. Chemical analysis revealed that simultaneous mutations of TBL34 and TBL35 caused a mild decrease in xylan acetyl content and a specific reduction in xylan 3-O-monoacetylation and 2,3-di-O-acetylation. Furthermore, simultaneous mutations of TBL34, TBL35 and ESKIMO1 (ESK1) resulted in severely collapsed xylem vessels with altered secondary wall structure, and an extremely retarded plant growth. These findings indicate that TBL34 and TBL35 are putat...Continue Reading

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Citations

Jul 28, 2016·Plant Science : an International Journal of Experimental Plant Biology·Veronique BruléTamara L Western
May 31, 2017·Plant Biotechnology Journal·Rakesh BhatiaMaurice Bosch
Aug 18, 2018·The Plant Journal : for Cell and Molecular Biology·Maria StranneYumiko Sakuragi
Oct 13, 2018·The New Phytologist·Ruiqin ZhongZheng-Hua Ye
Jul 13, 2018·Angewandte Chemie·Alessia VignoliClaudio Luchinat
Apr 12, 2020·Journal of Experimental Botany·Yiping WangRuibo Hu
Mar 4, 2017·The New Phytologist·Prashant Mohan-Anupama PawarEwa J Mellerowicz
May 22, 2019·The Plant Journal : for Cell and Molecular Biology·Vikash KumarEwa J Mellerowicz
Jun 27, 2019·Planta·Sonali MohapatraHrudayanath Thatoi
Mar 24, 2018·Planta·Ruiqin ZhongZheng-Hua Ye
Sep 7, 2018·Frontiers in Plant Science·Markus Pauly, Vicente Ramírez
Nov 17, 2020·Frontiers in Plant Science·Jiaotong YangTao Zhou

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