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A novel mitochondrial protein is required for cell wall integrity,auxin accumulation and root elongation in Arabidopsis under salt stress

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Stress Biology 2022年第1期2卷 530-544页

作者： Zheping Yu Yuying Ren Jianwei Liu Jian-Kang Zhu Chunzhao Zhao Institute of Horticulture Zhejiang Academy of Agricultural SciencesHangzhou 310021China Shanghai Center for plant Stress Biology CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghai 200032China

Maintenance of root elongation is beneficial for the growth and survival of plants under salt stress,but currently the cellular components involved in the regulation of root growth under high salinity are not fully *** this study,we identified an Arabidopsis mutant,rres1,which exhibited reduced root elongation under treatment of a variety of salts,including NaCl,NaNO3,KCl,and ***1 encodes a novel mitochondrial protein and its molecular function is still *** salt stress,the root meristem length was shorter in the rres1 mutant compared to the wild type,which was correlated with a reduced auxin accumulation in the *** oxygen species(ROS),as important signals that regulate root elongation,were accumulated to higher levels in the rres1 mutant than the wild type after salt *** of monosaccharides in the cell wall showed that arabinose and xylose contents were decreased in the rres1 mutant under salt stress,and application of boric acid,which is required for the crosslinking of pectic polysaccharide rhamnogalacturonan-II(RG-II),largely rescued the root growth arrest of the rres1 mutant,suggesting that RRES1 participates in the maintenance of cell wall integrity under salt *** staining assay indicated that the RRES1 gene was expressed in leaves and weakly in root tip under normal conditions,but its expression was dramatically increased in leaves and roots after salt ***,our study reveals a novel mitochondrial protein that regulates root elongation under salt stress via the modulation of cell wall integrity,auxin accumulation,and ROS homeostasis.

关键词： Salt stress Auxin Reactive oxygen species plant cell wall Arabidopsis

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SWO1 modulates cell wall integrity under salt stress by interacting with importinɑin Arabidopsis

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Stress Biology 2021年第1期1卷 98-119页

作者： Zhidan Wang Mugui Wang Changhong Yang Lun Zhao Guochen Qin Li Peng Qijie Zheng Wenfeng Nie Chun-Peng Song Huazhong Shi Jian-Kang Zhu Chunzhao Zhao Shanghai Center for plant Stress Biology CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghai 200032China University of Chinese Academy of Sciences Beijing 100049China National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhan 430070China Department of Horticulture College of Horticulture and Plant ProtectionYangzhou UniversityYangzhou 225009China Key Laboratory of plant Stress Biology School of Life SciencesHenan UniversityKaifeng 475001China Department of Chemistry and Biochemistry Texas Tech UniversityLubbockTX 79409USA

Maintenance of cell wall integrity is of great importance not only for plant growth and development,but also for the adaptation of plants to adverse ***,how the cell wall integrity is modulated under salt stress is still poorly ***,we report that a nuclear-localized Agenet domain-containing protein SWO1(SWOLLEN 1)is required for the maintenance of cell wall integrity in Arabidopsis under salt *** in SWO1 gene results in swollen root tips,disordered root cell morphology,and root elongation inhibition under salt *** swo1 mutant accumulates less cellulose and pectin but more lignin under high ***-seq and ChIP-seq assays reveal that SWO1 binds to the promoter of several cell wall-related genes and regulates their expression under saline *** study indicates that SWO1 interacts with importinɑIMPA1 and IMPA2,which are required for the import of nuclear-localized *** impa1 impa2 double mutant also exhibits root growth inhibition under salt stress and mutations of these two genes aggravate the salt-hypersensitive phenotype of the swo1 *** together,our data suggest that SWO1 functions together with importinɑto regulate the expression of cell wall-related genes,which enables plants to maintain cell wall integrity under high salinity.

关键词： Agenet domain Salt stress Importins plant cell wall Arabidopsis

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cellulose synthesis in land plants

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Molecular plant 2023年第7期16卷 206-231页

作者： Gustav B.Pedersen Leonard Blaschek Kristian E.H.Frandsen Lise C.Noack Staffan Persson Copenhagen plant Science Center(CPSC) Department of Plant&Environmental SciencesUniversity of CopenhagenThorvaldsensvej 401871Frederiksberg CDenmark Joint International Research Laboratory of Metabolic&Developmental Sciences State Key Laboratory of Hybrid RiceSJTU-University of Adelaide Joint Centre for Agriculture and HealthSchool of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghaiChina

All plant cells are surrounded by a cell wall that provides cohesion,protection,and a means of directional growth to *** microfibrils contribute the main biomechanical scaffold for most of these *** biosynthesis of cellulose,which typically is the most prominent constituent of the cell wall and therefore Earth’s most abundant biopolymer,is finely attuned to developmental and environmental *** understanding of the machinery that catalyzes and regulates cellulose biosynthesis has substantially improved due to recent technological advances in,for example,structural biology and ***,we provide a comprehensive overview of the structure,function,and regulation of the cellulose synthesis machinery and its regulatory *** aim to highlight important knowledge gaps in the field,and outline emerging approaches that promise a means to close those gaps.

关键词： plant cell wall cellulose microfibrils cellulose synthases membrane proteins cytoskeleton protein interaction

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Ionic Liquid Efficiency on Wood Dissolution and Polysaccharide Identification

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Advances in Biological Chemistry 2022年第6期12卷 254-273页

作者： Idelette Plazanet Christelle Gady Sabine Lhernould Rachida Zerrouki Daniel Montplaisir Guy Costa Faculté des Sciences et Techniques Université de Limoges LABCiS (UR 22722) Limoges Cedex France Université du Québec à Trois-Rivières 3351 boulevard des Forges Québec Canada

The wood polysaccharide composition, a new analytical method, based on ionic liquid dissolution of low amount of biomass coupled with an ELISA essay of polysaccharides. In the present work, we synthesized and tested several imidazolium and 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) based ILs for their ability to solubilize Douglas-fir wood while preserving the wall polymer integrity. The couple times-temperatures have been essayed for wood dissolution. Then their efficiency for wood biomass dissolution was compared to the impact of IL on storing and/or destroy polysaccharides. Thanks to the ELISA technique with a set of mAbs against epitopes of the main hemicellulose, pectin, and protein families of cell wall components. Wood destructuration at 80˚C with the 1-ethyl-3-methylimidazolium bromide represents a good compromise of wood dissolution efficiency and low polysaccharide destruction.

关键词： plant cell wall Antibody Immunolabeling Imidazolium Based IL DBU Based IL

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Genome-scale identification of cell-wall related genes in Arabidopsis based on co-expression network analysis

Genome-scale identification of cell-wall related genes in Ar...

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从植物科学到农业发展——2012全国植物生物学大会

作者： Shan Wang~(1,3,4,#),Yanbin Yin~(1,2,#),Qin Ma~(1,2),Xiaojia Tang~1,Dongyun Hao~(3,4*) and YingXu~(1,2,5*) 1 Computational Systems Biology Laboratory,Department of Biochemistry and Molecular Biology,and Institute of Bioinformatics 2 BESC BioEerngy Science Center,University of Georgia,Athens,GA,USA 3Key Lab for Molecular Enzymology and Engineering of the Ministry of Education,Jilin University, Changchun,China 4 Biotechnology Research Centre,Jilin Academy of Agricultural Sciences(JAAS),Changchun,China 5 College of Computer Science and Technology,Jilin University,Changchun,China

Identification of the novel genes relevant to plant cell-wall(PCW) synthesis represents a highly important and challenging *** substantial efforts have been invested into studying this problem,the vast majority of the PCW related genes remain unknown. Here we present a computational study identified the novel PCW related genes in Arabidopsis based on the co-expression analyses of transcriptomic data in 351 conditions, using a bi-clustering *** analysis identified 217 highly co-expressed modules under some experimental conditions,each containing at least one gene related PCW synthesis according to Purdue cell wall Gene Families *** modules cover 349 known PCW related genes and 2,438 new *** each candidate gene,we predicted the detailed function and its involved PCW synthesis *** the co-expressed genes in each module,we predicted their motifs in the promoters using ourselves developed pipeline,providing strong evidence that the genes in each co-expression module are transcriptionally *** all modules,we inferred 108 modules related to four major PCW synthesis components,using three complementary *** believe our approach and data presented here will be useful for further identification and characterization of PCW related genes,which are available at a web-based database.

关键词： plant cell wall Arabidopsis Co-expression network analyses Bi-clustering Cis regulatory motifs

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