Cell wallβ-1,4-galactan regulated by the BPC1/BPC2-GALS1 module aggravates salt sensitivity in Arabidopsis thaliana

作     者：Jingwei Yan Ya Liu Lan Yang Huan He Yun Huang Lin Fang Henrik Vibe Scheller Mingyi Jiang Aying Zhang Jingwei Yan;Ya Liu;Lan Yang;Huan He;Yun Huang;Lin Fang;Henrik Vibe Scheller;Mingyi Jiang;Aying Zhang

作者机构：College of Life SciencesNanjing Agricultural UniversityNanjingJiangsu 210095China State Key Laboratory of Crop Genetics and Germplasm EnhancementNanjing Agricultural UniversityNanjingJiangsu 210095China Guangdong Provincial Key Laboratory of Applied BotanySouth China Botanical GardenChinese Academy of SciencesGuangzhouGuangdong 510650China Joint Bioenergy Institute and Environmental Genomics and Systems Biology DivisionLawrence Berkeley National LaboratoryBerkeleyCA 94720USA Department of Plant and Microbial BiologyUniversity of CaliforniaBerkeleyCA 94720USA 

出 版 物：《Molecular Plant》 (分子植物（英文版）)

年 卷 期：2021年第14卷第3期

页      面：411-425页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 

基　　金：This study was supported by grants from the National Natural Science Foundation of China(31871534 and 32001445) the Natural Science Foundation of Jiangsu Province(BK20200557) the China Postdoctoral Science Foundation(2019M651846) the Six Talent Peaks Program of Jiangsu Province(2016-NY-079) and the Natural Science Foundation of Guangdong Province(2018A030313686).H.V.S.was supported through the Joint BioEnergy Institute(http://www.jbei.org)by the U.S.Department of Energy,Office of Science,Office of Biological and Environmental Research,through contract DE-AC02-05CH11231 between Lawrence Berkeley National Laboratory and the U.S.Department of Energy 

主　　题：salt stress β-1,4-galactan GALS1 BPC1/BPC2 Arabidopsis thaliana 

摘      要：Salinity severely reduces plant growth and limits agricultural *** changes and rearrangement of the plant cell wall is an important response to salt stress,but relatively little is known about the biological importance of specific cell wall components in the ***,we demonstrate a specific function ofβ-1,4-galactan in salt *** found that salt stress induces the accumulation ofβ-1,4-galactan in root cell walls by up regulating the expression of GALACTAN SYNTHASE 1(GALS1),which encodes aβ-1,4-galactan *** accumulation ofβ-1,4-galactan negatively affects salt *** application of D-galactose(D-Gal)causes an increase inβ-1,4-galactan levels in the wild type and GALS1 mutants,especially in GALS1 overexpressors,which correlated with the aggravated salt ***,we discovered that the BARLEY B RECOMBINANT/BASIC PENTACYSTEINE transcription factors BPC1/BPC2 positively regulate plant salt tolerance by repressing GALS1 expression andβ-1,4-galactan *** analysis suggested that GALS1 is genetically epistatic to BPC1/BPC2 with respect to the control of salt sensitivity as well as accumulation ofβ-1,*** together,our results reveal a new regulatory mechanism by whichβ-1,4-galactan regulated by the BPC1/BPC2-GALS1 module aggravates salt sensitivity in Arabidopsis thaliana.