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Cosgrove DJ. Structure and growth of plant cell walls. Nat Rev Mol Cell Biol 2024; 25:340-358. [PMID: 38102449 DOI: 10.1038/s41580-023-00691-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/15/2023] [Indexed: 12/17/2023]
Abstract
Plant cells build nanofibrillar walls that are central to plant growth, morphogenesis and mechanics. Starting from simple sugars, three groups of polysaccharides, namely, cellulose, hemicelluloses and pectins, with very different physical properties are assembled by the cell to make a strong yet extensible wall. This Review describes the physics of wall growth and its regulation by cellular processes such as cellulose production by cellulose synthase, modulation of wall pH by plasma membrane H+-ATPase, wall loosening by expansin and signalling by plant hormones such as auxin and brassinosteroid. In addition, this Review discusses the nuanced roles, properties and interactions of cellulose, matrix polysaccharides and cell wall proteins and describes how wall stress and wall loosening cooperatively result in cell wall growth.
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Affiliation(s)
- Daniel J Cosgrove
- Department of Biology, Pennsylvania State University, University Park, Pennsylvania, USA.
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2
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Purushotham P, Ho R, Zimmer J. In vitro function, assembly, and interaction of primary cell wall cellulose synthase homotrimers. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.13.580128. [PMID: 38405885 PMCID: PMC10888898 DOI: 10.1101/2024.02.13.580128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Plant cell walls contain a meshwork of cellulose fibers embedded into a matrix of other carbohydrate and non-carbohydrate-based biopolymers. This composite material exhibits extraordinary properties, from stretchable and pliable cell boundaries to solid protective shells. Cellulose, a linear glucose polymer, is synthesized and secreted across the plasma membrane by cellulose synthase (CesA). Plants express several CesA isoforms, with different subsets necessary for primary and secondary cell wall biogenesis. The produced cellulose chains can be organized into fibrillar structures and fibrillogenesis likely requires the supramolecular organization of CesAs into pseudo sixfold symmetric complexes (CSCs). Here, we structurally and functionally characterize a set of soybean (Gm) CesA isoforms implicated in primary cell wall biogenesis. Cryogenic electron microscopy analyses of catalytically active GmCesA1, GmCesA3, and GmCesA6 reveal their assembly into homotrimeric complexes, stabilized by a cytosolic plant conserved region. Contrasting secondary cell wall CesAs, a peripheral position of the C-terminal transmembrane helix creates a large, lipid-exposed lateral opening of the enzymes' cellulose-conducting transmembrane channels. Co-purification experiments reveal that homotrimers of different CesA isoforms interact in vitro and that this interaction is independent of the enzymes' N-terminal cytosolic domains. Our data suggest that cross-isoform interactions are mediated by the class-specific region, which forms a hook-shaped protrusion of the catalytic domain at the cytosolic water-lipid interface. Further, inter-isoform interactions lead to synergistic catalytic activity, suggesting increased cellulose biosynthesis upon homotrimer interaction. Combined, our structural and biochemical data favor a model by which homotrimers of different CesA isoforms assemble into a microfibril-producing CSC.
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Affiliation(s)
- Pallinti Purushotham
- Department of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, VA 22903. Howard Hughes Medical Institute
| | - Ruoya Ho
- Department of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, VA 22903. Howard Hughes Medical Institute
| | - Jochen Zimmer
- Department of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, VA 22903. Howard Hughes Medical Institute
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3
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DeAngelis PL, Zimmer J. Hyaluronan synthases; mechanisms, myths, & mysteries of three types of unique bifunctional glycosyltransferases. Glycobiology 2023; 33:1117-1127. [PMID: 37769351 PMCID: PMC10939387 DOI: 10.1093/glycob/cwad075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 09/15/2023] [Accepted: 09/25/2023] [Indexed: 09/30/2023] Open
Abstract
Hyaluronan (HA), the essential [-3-GlcNAc-1-β-4-GlcA-1-β-]n matrix polysaccharide in vertebrates and molecular camouflage coating in select pathogens, is polymerized by "HA synthase" (HAS) enzymes. The first HAS identified three decades ago opened the window for new insights and biotechnological tools. This review discusses current understanding of HA biosynthesis, its biotechnological utility, and addresses some misconceptions in the literature. HASs are fascinating enzymes that polymerize two different UDP-activated sugars via different glycosidic linkages. Therefore, these catalysts were the first examples to break the "one enzyme/one sugar transferred" dogma. Three distinct types of these bifunctional glycosyltransferases (GTs) with disparate architectures and reaction modes are known. Based on biochemical and structural work, we present an updated classification system. Class I membrane-integrated HASs employ a processive chain elongation mechanism and secrete HA across the plasma membrane. This complex operation is accomplished by functionally integrating a cytosolic catalytic domain with a channel-forming transmembrane region. Class I enzymes, containing a single GT family-2 (GT-2) module that adds both monosaccharide units to the nascent chain, are further subdivided into two groups that construct the polymer with opposite molecular directionalities: Class I-R and I-NR elongate the HA polysaccharide at either the reducing or the non-reducing end, respectively. In contrast, Class II HASs are membrane-associated peripheral synthases with a non-processive, non-reducing end elongation mechanism using two independent GT-2 modules (one for each type of monosaccharide) and require a separate secretion system for HA export. We discuss recent mechanistic insights into HA biosynthesis that promise biotechnological benefits and exciting engineering approaches.
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Affiliation(s)
- Paul L DeAngelis
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd., Oklahoma, OK 73104, United States
| | - Jochen Zimmer
- Department of Molecular Physiology and Biological Physics, Howard Hughes Medical Institute, University of Virginia, 480 Ray C. Hunt Dr, Charlottesville, VA 22908, United States
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Shamshoum M, Natalio F. Conserved Active Site Architecture Between Bacterial Cellulose and Chitin Synthases. Chembiochem 2023; 24:e202300388. [PMID: 37253095 DOI: 10.1002/cbic.202300388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 05/30/2023] [Indexed: 06/01/2023]
Abstract
Glycosyltransferases (GTs) are a large and diverse group of enzymes responsible for catalyzing the formation of a glycosidic bond between a donor molecule, usually a monosaccharide, and a wide range of acceptor molecules, thus, playing critical roles in various essential biological processes. Chitin and cellulose synthases are two inverting processive integral membrane GTs, belonging to the type-2 family involved in the biosynthesis of chitin and cellulose, respectively. Herein, we report that bacterial cellulose and chitin synthases share an E-D-D-ED-QRW-TK active site common motif that is spatially co-localized. This motif is conserved among distant bacterial evolutionary species despite their low amino acid sequence and structural similarities between them. This theoretical framework offers a new perspective to the current view that bacterial cellulose and chitin synthases are substrate specific and that chitin and cellulose are organism specific. It lays the ground for future in vivo and in silico experimental assessment of cellulose synthase catalytic promiscuity against uridine diphosphate N-acetylglucosamine and chitin synthase against uridine diphosphate glucose, respectively.
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Affiliation(s)
- Melina Shamshoum
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, 234 Herzl St., Rehovot, 7610001, Israel
| | - Filipe Natalio
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, 234 Herzl St., Rehovot, 7610001, Israel
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Xing L, Wang M, He Q, Zhang H, Liang H, Zhou Q, Liu Y, Liu Z, Wang Y, Du C, Xiao Y, Liu J, Li W, Liu G, Du H. Differential subgenome expression underlies biomass accumulation in allotetraploid Pennisetum giganteum. BMC Biol 2023; 21:161. [PMID: 37480118 PMCID: PMC10362693 DOI: 10.1186/s12915-023-01643-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 06/06/2023] [Indexed: 07/23/2023] Open
Abstract
BACKGROUND Pennisetum giganteum (AABB, 2n = 4x = 28) is a C4 plant in the genus Pennisetum with origin in Africa but currently also grown in Asia and America. It is a crucial forage and potential energy grass with significant advantages in yield, stress resistance, and environmental adaptation. However, the mechanisms underlying these advantageous traits remain largely unexplored. Here, we present a high-quality genome assembly of the allotetraploid P. giganteum aiming at providing insights into biomass accumulation. RESULTS Our assembly has a genome size 2.03 Gb and contig N50 of 88.47 Mb that was further divided into A and B subgenomes. Genome evolution analysis revealed the evolutionary relationships across the Panicoideae subfamily lineages and identified numerous genome rearrangements that had occurred in P. giganteum. Comparative genomic analysis showed functional differentiation between the subgenomes. Transcriptome analysis found no subgenome dominance at the overall gene expression level; however, differentially expressed homoeologous genes and homoeolog-specific expressed genes between the two subgenomes were identified, suggesting that complementary effects between the A and B subgenomes contributed to biomass accumulation of P. giganteum. Besides, C4 photosynthesis-related genes were significantly expanded in P. giganteum and their sequences and expression patterns were highly conserved between the two subgenomes, implying that both subgenomes contributed greatly and almost equally to the highly efficient C4 photosynthesis in P. giganteum. We also identified key candidate genes in the C4 photosynthesis pathway that showed sustained high expression across all developmental stages of P. giganteum. CONCLUSIONS Our study provides important genomic resources for elucidating the genetic basis of advantageous traits in polyploid species, and facilitates further functional genomics research and genetic improvement of P. giganteum.
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Affiliation(s)
- Longsheng Xing
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071000, China
- Hebei Basic Science Center for Biotic Interaction, Baoding, 071000, China
| | - Meijia Wang
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071000, China
| | - Qiang He
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071000, China
- Hebei Basic Science Center for Biotic Interaction, Baoding, 071000, China
| | - Hongyu Zhang
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071000, China
| | - Hanfei Liang
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071000, China
| | - Qinghong Zhou
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071000, China
| | - Yu Liu
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071000, China
| | - Ze Liu
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071000, China
| | - Yu Wang
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071000, China
| | - Cailian Du
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071000, China
| | - Yao Xiao
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071000, China
| | - Jianan Liu
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071000, China
| | - Wei Li
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071000, China
- Hebei Basic Science Center for Biotic Interaction, Baoding, 071000, China
| | - Guixia Liu
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071000, China.
- Hebei Basic Science Center for Biotic Interaction, Baoding, 071000, China.
| | - Huilong Du
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071000, China.
- Hebei Basic Science Center for Biotic Interaction, Baoding, 071000, China.
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Chabi M, Goulas E, Galinousky D, Blervacq AS, Lucau-Danila A, Neutelings G, Grec S, Day A, Chabbert B, Haag K, Müssig J, Arribat S, Planchon S, Renaut J, Hawkins S. Identification of new potential molecular actors related to fiber quality in flax through Omics. FRONTIERS IN PLANT SCIENCE 2023; 14:1204016. [PMID: 37528984 PMCID: PMC10390313 DOI: 10.3389/fpls.2023.1204016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 06/20/2023] [Indexed: 08/03/2023]
Abstract
One of the biggest challenges for a more widespread utilization of plant fibers is to better understand the different molecular factors underlying the variability in fineness and mechanical properties of both elementary and scutched fibers. Accordingly, we analyzed genome-wide transcription profiling from bast fiber bearing tissues of seven different flax varieties (4 spring, 2 winter fiber varieties and 1 winter linseed) and identified 1041 differentially expressed genes between varieties, of which 97 were related to cell wall metabolism. KEGG analysis highlighted a number of different enriched pathways. Subsequent statistical analysis using Partial Least-Squares Discriminant Analysis showed that 73% of the total variance was explained by the first 3 X-variates corresponding to 56 differentially expressed genes. Calculation of Pearson correlations identified 5 genes showing a strong correlation between expression and morphometric data. Two-dimensional gel proteomic analysis on the two varieties showing the most discriminant and significant differences in morphometrics revealed 1490 protein spots of which 108 showed significant differential abundance. Mass spectrometry analysis successfully identified 46 proteins representing 32 non-redundant proteins. Statistical clusterization based on the expression level of genes corresponding to the 32 proteins showed clear discrimination into three separate clusters, reflecting the variety type (spring-/winter-fiber/oil). Four of the 32 proteins were also highly correlated with morphometric features. Examination of predicted functions for the 9 (5 + 4) identified genes highlighted lipid metabolism and senescence process. Calculation of Pearson correlation coefficients between expression data and retted fiber mechanical measurements (strength and maximum force) identified 3 significantly correlated genes. The genes were predicted to be connected to cell wall dynamics, either directly (Expansin-like protein), or indirectly (NAD(P)-binding Rossmann-fold superfamily protein). Taken together, our results have allowed the identification of molecular actors potentially associated with the determination of both in-planta fiber morphometrics, as well as ex-planta fiber mechanical properties, both of which are key parameters for elementary fiber and scutched fiber quality in flax.
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Affiliation(s)
- Malika Chabi
- Université de Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Estelle Goulas
- Université de Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Dmitry Galinousky
- Université de Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Anne-Sophie Blervacq
- Université de Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Anca Lucau-Danila
- Université de Lille, UMRT 1158 BioEcoAgro, Institut Charles Viollette, Lille, France
| | - Godfrey Neutelings
- Université de Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Sébastien Grec
- Université de Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Arnaud Day
- Université de Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
- Fibres Recherche Développement, Technopole de l’Aube en Champagne – Hôtel de Bureaux 2, 2 rue Gustave Eiffel, CS 90601, Troyes, France
| | - Brigitte Chabbert
- Université de Reims Champagne-Ardenne, INRAE, FARE, UMR A 614, Reims, France
| | - Katharina Haag
- Fraunhofer-Institute for Manufacturing Technology and Advanced Materials IFAM, Bremen, Germany
| | - Jörg Müssig
- The Biological Materials Group, HSB – City University of Applied Sciences, Bremen, Germany
| | - Sandrine Arribat
- Université de Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Sébastien Planchon
- Department of Environmental Research and Innovation, Luxembourg Institute of Science and Technology, Esch-sur-Alzette, Luxembourg
| | - Jenny Renaut
- Department of Environmental Research and Innovation, Luxembourg Institute of Science and Technology, Esch-sur-Alzette, Luxembourg
| | - Simon Hawkins
- Université de Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
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Shen S, Li Y, Chen M, Huang J, Liu F, Xie S, Kong L, Pan Y. Reduced cadmium toxicity in rapeseed via alteration of root properties and accelerated plant growth by a nitrogen-fixing bacterium. JOURNAL OF HAZARDOUS MATERIALS 2023; 449:131040. [PMID: 36821906 DOI: 10.1016/j.jhazmat.2023.131040] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 02/09/2023] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
Cd accumulation in crops has become a global environmental problem because it endangers human health. Screening for microorganisms that can reduce Cd accumulation in crops is a possible measure to address this issue. However, success has been limited, and most previous work did not involve bacteria. In the present study, a strain of N-fixing bacteria (Burkholderia spp.) that exhibits high levels of Cd tolerance was screened. The ability of this bacterium to reduce Cd in rapeseed was then assessed in sterile hydroponic and open soil culture systems. In the hydroponic system, the Burkholderia inoculum promoted Cd fixation in rapeseed roots and thus reduced Cd enrichment in aboveground edible tissues (leaves). The mechanisms were related to increased activity of pectin methylesterase in root cell walls, and the transformation of the chemical form of root Cd from "active" (NaCl-extracted) to "inert" (HCl-extracted and residual Cd) states. Additionally, Burkholderia accelerated plant growth, thus shortening the period in which the plant is available for Cd absorption. In the soil culture system, Burkholderia also reduced Cd enrichment in rapeseed leaves in the presence of other microorganisms. Thus, the bacterial strain shows potential for broad application for reducing the accumulation of Cd in crops.
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Affiliation(s)
- Shili Shen
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming 650091, Yunnan, China; Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments, School of Ecology and Environmental Sciences, Yunnan University, Kunming 650091, Yunnan, China; School of Ecology and Environmental Sciences, Yunnan University, Kunming 650091, Yunnan, China
| | - Yinghan Li
- School of Ecology and Environmental Sciences, Yunnan University, Kunming 650091, Yunnan, China
| | - Mingbiao Chen
- School of Ecology and Environmental Sciences, Yunnan University, Kunming 650091, Yunnan, China; Instititue of International Rivers and Eco-security, Yunnan Key Laboratory of International Rivers and Trans-Boundary Eco-security, Yunnan University, Kunming 650091, China
| | - Juan Huang
- Instititue of International Rivers and Eco-security, Yunnan Key Laboratory of International Rivers and Trans-Boundary Eco-security, Yunnan University, Kunming 650091, China
| | - Feng Liu
- Wuzhou Agricultural Products Quality and Safety Comprehensive Testing Center, Wuzhou 543000, Guangxi, China
| | - Shijie Xie
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments, School of Ecology and Environmental Sciences, Yunnan University, Kunming 650091, Yunnan, China; School of Ecology and Environmental Sciences, Yunnan University, Kunming 650091, Yunnan, China; Instititue of International Rivers and Eco-security, Yunnan Key Laboratory of International Rivers and Trans-Boundary Eco-security, Yunnan University, Kunming 650091, China
| | - Liping Kong
- Instititue of International Rivers and Eco-security, Yunnan Key Laboratory of International Rivers and Trans-Boundary Eco-security, Yunnan University, Kunming 650091, China
| | - Ying Pan
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments, School of Ecology and Environmental Sciences, Yunnan University, Kunming 650091, Yunnan, China; School of Ecology and Environmental Sciences, Yunnan University, Kunming 650091, Yunnan, China.
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8
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Etale A, Onyianta AJ, Turner SR, Eichhorn SJ. Cellulose: A Review of Water Interactions, Applications in Composites, and Water Treatment. Chem Rev 2023; 123:2016-2048. [PMID: 36622272 PMCID: PMC9999429 DOI: 10.1021/acs.chemrev.2c00477] [Citation(s) in RCA: 50] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Cellulose is known to interact well with water, but is insoluble in it. Many polysaccharides such as cellulose are known to have significant hydrogen bond networks joining the molecular chains, and yet they are recalcitrant to aqueous solvents. This review charts the interaction of cellulose with water but with emphasis on the formation of both natural and synthetic fiber composites. Covering studies concerning the interaction of water with wood, the biosynthesis of cellulose in the cell wall, to its dispersion in aqueous suspensions and ultimately in water filtration and fiber-based composite materials this review explores water-cellulose interactions and how they can be exploited for synthetic and natural composites. The suggestion that cellulose is amphiphilic is critically reviewed, with relevance to its processing. Building on this, progress made in using various charged and modified forms of nanocellulose to stabilize oil-water emulsions is addressed. The role of water in the aqueous formation of chiral nematic liquid crystals, and subsequently when dried into composite films is covered. The review will also address the use of cellulose as an aid to water filtration as one area where interactions can be used effectively to prosper human life.
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Affiliation(s)
- Anita Etale
- Bristol Composites Institute, School of Civil, Aerospace and Mechanical Engineering, University of Bristol, University Walk, BristolBS8 1TR, United Kingdom
| | - Amaka J Onyianta
- Bristol Composites Institute, School of Civil, Aerospace and Mechanical Engineering, University of Bristol, University Walk, BristolBS8 1TR, United Kingdom
| | - Simon R Turner
- School of Biological Science, University of Manchester, Oxford Road, ManchesterM13 9PT, U.K
| | - Stephen J Eichhorn
- Bristol Composites Institute, School of Civil, Aerospace and Mechanical Engineering, University of Bristol, University Walk, BristolBS8 1TR, United Kingdom
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9
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Controlled processivity in glycosyltransferases: A way to expand the enzymatic toolbox. Biotechnol Adv 2023; 63:108081. [PMID: 36529206 DOI: 10.1016/j.biotechadv.2022.108081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 11/20/2022] [Accepted: 12/11/2022] [Indexed: 12/23/2022]
Abstract
Glycosyltransferases (GT) catalyse the biosynthesis of complex carbohydrates which are the most abundant group of molecules in nature. They are involved in several key mechanisms such as cell signalling, biofilm formation, host immune system invasion or cell structure and this in both prokaryotic and eukaryotic cells. As a result, research towards complete enzyme mechanisms is valuable to understand and elucidate specific structure-function relationships in this group of molecules. In a next step this knowledge could be used in GT protein engineering, not only for rational drug design but also for multiple biotechnological production processes, such as the biosynthesis of hyaluronan, cellooligosaccharides or chitooligosaccharides. Generation of these poly- and/or oligosaccharides is possible due to a common feature of several of these GTs: processivity. Enzymatic processivity has the ability to hold on to the growing polymer chain and some of these GTs can even control the number of glycosyl transfers. In a first part, recent advances in understanding the mechanism of various processive enzymes are discussed. To this end, an overview is given of possible engineering strategies for the purpose of new industrial and fundamental applications. In the second part of this review, we focused on specific chain length-controlling mechanisms, i.e., key residues or conserved regions, and this for both eukaryotic and prokaryotic enzymes.
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10
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Prabhakar PK, Pereira JH, Taujale R, Shao W, Bharadwaj VS, Chapla D, Yang JY, Bomble YJ, Moremen KW, Kannan N, Hammel M, Adams PD, Scheller HV, Urbanowicz BR. Structural and biochemical insight into a modular β-1,4-galactan synthase in plants. NATURE PLANTS 2023; 9:486-500. [PMID: 36849618 PMCID: PMC10115243 DOI: 10.1038/s41477-023-01358-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 01/25/2023] [Indexed: 05/18/2023]
Abstract
Rhamnogalacturonan I (RGI) is a structurally complex pectic polysaccharide with a backbone of alternating rhamnose and galacturonic acid residues substituted with arabinan and galactan side chains. Galactan synthase 1 (GalS1) transfers galactose and arabinose to either extend or cap the β-1,4-galactan side chains of RGI, respectively. Here we report the structure of GalS1 from Populus trichocarpa, showing a modular protein consisting of an N-terminal domain that represents the founding member of a new family of carbohydrate-binding module, CBM95, and a C-terminal glycosyltransferase family 92 (GT92) catalytic domain that adopts a GT-A fold. GalS1 exists as a dimer in vitro, with stem domains interacting across the chains in a 'handshake' orientation that is essential for maintaining stability and activity. In addition to understanding the enzymatic mechanism of GalS1, we gained insight into the donor and acceptor substrate binding sites using deep evolutionary analysis, molecular simulations and biochemical studies. Combining all the results, a mechanism for GalS1 catalysis and a new model for pectic galactan side-chain addition are proposed.
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Affiliation(s)
- Pradeep Kumar Prabhakar
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, USA
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oakridge, TN, USA
| | - Jose Henrique Pereira
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Joint BioEnergy Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Rahil Taujale
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, USA
| | - Wanchen Shao
- Joint BioEnergy Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Vivek S Bharadwaj
- Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, CO, USA
| | - Digantkumar Chapla
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
| | - Jeong-Yeh Yang
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
| | - Yannick J Bomble
- Biosciences Center, National Renewable Energy Laboratory, Golden, CO, USA
| | - Kelley W Moremen
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, USA
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
| | - Natarajan Kannan
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, USA
| | - Michal Hammel
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Paul D Adams
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Joint BioEnergy Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Bioengineering, University of California, Berkeley, CA, USA
| | - Henrik V Scheller
- Joint BioEnergy Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, USA
| | - Breeanna R Urbanowicz
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, USA.
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA.
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oakridge, TN, USA.
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11
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Pieczywek PM, Chibrikov V, Zdunek A. In silico studies of plant primary cell walls - structure and mechanics. Biol Rev Camb Philos Soc 2023; 98:887-899. [PMID: 36692136 DOI: 10.1111/brv.12935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 12/16/2022] [Accepted: 01/13/2023] [Indexed: 01/25/2023]
Abstract
Primary plant cell wall (PCW) is a highly organized network, its performance is dependent on cellulose, hemicellulose and pectic polysaccharides, their properties, interactions and assemblies. Their mutual relationships and functions in the cell wall can be better understood by means of conceptual models of their higher-order structures. Knowledge unified in the form of a conceptual model allows predictions to be made about the properties and behaviour of the system under study. Ongoing research in this field has resulted in a number of conceptual models of the cell wall. However, due to the currently limited research methods, the community of cell wall researchers have not reached a consensus favouring one model over another. Herein we present yet another research technique - numerical modelling - which is capable of resolving this issue. Even at the current stage of development of numerical techniques, due to their complexity, the in silico reconstruction of PCW remains a challenge for computational simulations. However, some difficulties have been overcome, thereby making it possible to produce advanced approximations of PCW structure and mechanics. This review summarizes the results concerning the simulation of polysaccharide interactions in PCW with regard to network fine structure, supramolecular properties and polysaccharide binding affinity. The in silico mechanical models presented herein incorporate certain physical and biomechanical aspects of cell wall architecture for the purposes of undertaking critical testing to bring about advances in our understanding of the mechanisms controlling cells and limiting cell wall expansion.
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Affiliation(s)
- Piotr Mariusz Pieczywek
- Institute of Agrophysics, Polish Academy of Sciences, ul. Doświadczalna 4, Lublin, 20-290, Poland
| | - Vadym Chibrikov
- Institute of Agrophysics, Polish Academy of Sciences, ul. Doświadczalna 4, Lublin, 20-290, Poland
| | - Artur Zdunek
- Institute of Agrophysics, Polish Academy of Sciences, ul. Doświadczalna 4, Lublin, 20-290, Poland
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12
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Guzha A, McGee R, Scholz P, Hartken D, Lüdke D, Bauer K, Wenig M, Zienkiewicz K, Herrfurth C, Feussner I, Vlot AC, Wiermer M, Haughn G, Ischebeck T. Cell wall-localized BETA-XYLOSIDASE4 contributes to immunity of Arabidopsis against Botrytis cinerea. PLANT PHYSIOLOGY 2022; 189:1794-1813. [PMID: 35485198 PMCID: PMC9237713 DOI: 10.1093/plphys/kiac165] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 03/14/2022] [Indexed: 05/15/2023]
Abstract
Plant cell walls constitute physical barriers that restrict access of microbial pathogens to the contents of plant cells. The primary cell wall of multicellular plants predominantly consists of cellulose, hemicellulose, and pectin, and its composition can change upon stress. BETA-XYLOSIDASE4 (BXL4) belongs to a seven-member gene family in Arabidopsis (Arabidopsis thaliana), one of which encodes a protein (BXL1) involved in cell wall remodeling. We assayed the influence of BXL4 on plant immunity and investigated the subcellular localization and enzymatic activity of BXL4, making use of mutant and overexpression lines. BXL4 localized to the apoplast and was induced upon infection with the necrotrophic fungal pathogen Botrytis cinerea in a jasmonoyl isoleucine-dependent manner. The bxl4 mutants showed a reduced resistance to B. cinerea, while resistance was increased in conditional overexpression lines. Ectopic expression of BXL4 in Arabidopsis seed coat epidermal cells rescued a bxl1 mutant phenotype, suggesting that, like BXL1, BXL4 has both xylosidase and arabinosidase activity. We conclude that BXL4 is a xylosidase/arabinosidase that is secreted to the apoplast and its expression is upregulated under pathogen attack, contributing to immunity against B. cinerea, possibly by removal of arabinose and xylose side-chains of polysaccharides in the primary cell wall.
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Affiliation(s)
| | - Robert McGee
- Department of Botany, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z4
| | - Patricia Scholz
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute for Plant Sciences and Goettingen Center for Molecular Biosciences (GZMB), University of Goettingen, Justus-von-Liebig Weg 11, D-37077 Goettingen, Germany
| | - Denise Hartken
- Molecular Biology of Plant-Microbe Interactions Research Group, Albrecht-von-Haller-Institute for Plant Sciences and Goettingen Center for Molecular Biosciences (GZMB), University of Goettingen, Justus-von-Liebig Weg 11, D-37077 Goettingen Germany
| | | | - Kornelia Bauer
- Helmholtz Zentrum Muenchen, Institute of Biochemical Plant Pathology, Ingolstaedter Landstrasse 1, 85764 Neuherberg, Germany
| | - Marion Wenig
- Helmholtz Zentrum Muenchen, Institute of Biochemical Plant Pathology, Ingolstaedter Landstrasse 1, 85764 Neuherberg, Germany
| | - Krzysztof Zienkiewicz
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute for Plant Sciences and Goettingen Center for Molecular Biosciences (GZMB), University of Goettingen, Justus-von-Liebig Weg 11, D-37077 Goettingen, Germany
- Service Unit for Metabolomics and Lipidomics, Goettingen Center for Molecular Biosciences (GZMB), University of Goettingen, D-37077 Goettingen, Germany
- UMK Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, 87-100 Toruń, Poland
| | - Cornelia Herrfurth
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute for Plant Sciences and Goettingen Center for Molecular Biosciences (GZMB), University of Goettingen, Justus-von-Liebig Weg 11, D-37077 Goettingen, Germany
- Service Unit for Metabolomics and Lipidomics, Goettingen Center for Molecular Biosciences (GZMB), University of Goettingen, D-37077 Goettingen, Germany
| | - Ivo Feussner
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute for Plant Sciences and Goettingen Center for Molecular Biosciences (GZMB), University of Goettingen, Justus-von-Liebig Weg 11, D-37077 Goettingen, Germany
- Service Unit for Metabolomics and Lipidomics, Goettingen Center for Molecular Biosciences (GZMB), University of Goettingen, D-37077 Goettingen, Germany
| | - A Corina Vlot
- Helmholtz Zentrum Muenchen, Institute of Biochemical Plant Pathology, Ingolstaedter Landstrasse 1, 85764 Neuherberg, Germany
| | - Marcel Wiermer
- Molecular Biology of Plant-Microbe Interactions Research Group, Albrecht-von-Haller-Institute for Plant Sciences and Goettingen Center for Molecular Biosciences (GZMB), University of Goettingen, Justus-von-Liebig Weg 11, D-37077 Goettingen Germany
- Freie Universität Berlin, Institute of Biology, Dahlem Centre of Plant Sciences, Biochemistry of Plant-Microbe Interactions, Königin-Luise-Str. 12-16, 14195 Berlin, Germany
| | - George Haughn
- Department of Botany, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z4
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13
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San Clemente H, Kolkas H, Canut H, Jamet E. Plant Cell Wall Proteomes: The Core of Conserved Protein Families and the Case of Non-Canonical Proteins. Int J Mol Sci 2022; 23:ijms23084273. [PMID: 35457091 PMCID: PMC9029284 DOI: 10.3390/ijms23084273] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/06/2022] [Accepted: 04/10/2022] [Indexed: 12/25/2022] Open
Abstract
Plant cell wall proteins (CWPs) play critical roles during plant development and in response to stresses. Proteomics has revealed their great diversity. With nearly 1000 identified CWPs, the Arabidopsis thaliana cell wall proteome is the best described to date and it covers the main plant organs and cell suspension cultures. Other monocot and dicot plants have been studied as well as bryophytes, such as Physcomitrella patens and Marchantia polymorpha. Although these proteomes were obtained using various flowcharts, they can be searched for the presence of members of a given protein family. Thereby, a core cell wall proteome which does not pretend to be exhaustive, yet could be defined. It comprises: (i) glycoside hydrolases and pectin methyl esterases, (ii) class III peroxidases, (iii) Asp, Ser and Cys proteases, (iv) non-specific lipid transfer proteins, (v) fasciclin arabinogalactan proteins, (vi) purple acid phosphatases and (vii) thaumatins. All the conserved CWP families could represent a set of house-keeping CWPs critical for either the maintenance of the basic cell wall functions, allowing immediate response to environmental stresses or both. Besides, the presence of non-canonical proteins devoid of a predicted signal peptide in cell wall proteomes is discussed in relation to the possible existence of alternative secretion pathways.
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14
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Cai B, Wang T, Sun H, Liu C, Chu J, Ren Z, Li Q. Gibberellins regulate lateral root development that is associated with auxin and cell wall metabolisms in cucumber. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2022; 317:110995. [PMID: 35193752 DOI: 10.1016/j.plantsci.2021.110995] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 07/05/2021] [Accepted: 07/17/2021] [Indexed: 06/14/2023]
Abstract
Cucumber is an economically important crop cultivated worldwide. Gibberellins (GAs) play important roles in the development of lateral roots (LRs), which are critical for plant stress tolerance and productivity. Therefore, it is of great importance for cucumber production to study the role of GAs in LR development. Here, the results showed that GAs regulated cucumber LR development in a concentration-dependent manner. Treatment with 1, 10, 50 and 100 μM GA3 significantly increased secondary root length, tertiary root number and length. Of these, 50 μM GA3 treatment had strong effects on increasing root dry weight and the root/shoot dry weight ratio. Pairwise comparisons identified 417 down-regulated genes enriched for GA metabolism-related processes and 447 up-regulated genes enriched for cell wall metabolism-related processes in GA3-treated roots. A total of 3523 non-redundant DEGs were identified in our RNA-Seq data through pairwise comparisons and linear factorial modeling. Of these, most of the genes involved in auxin and cell wall metabolisms were up-regulated in GA3-treated roots. Our findings not only shed light on LR regulation mediated by GA but also offer an important resource for functional studies of candidate genes putatively involved in the regulation of LR development in cucumber and other crops.
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Affiliation(s)
- Bingbing Cai
- State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei, Collaborative Innovation Center of Vegetable Industry in Hebei, College of Horticulture, Hebei Agricultural University, Baoding, 071001, China.
| | - Ting Wang
- College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, 271018, China.
| | - Hong Sun
- College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, 271018, China.
| | - Cuimei Liu
- National Centre for Plant Gene Research (Beijing), Innovation Academy for Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Jinfang Chu
- National Centre for Plant Gene Research (Beijing), Innovation Academy for Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100039, China.
| | - Zhonghai Ren
- College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huang-Huai Region, Ministry of Agriculture, Tai'an, Shandong, 271018, China.
| | - Qiang Li
- State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei, Collaborative Innovation Center of Vegetable Industry in Hebei, College of Horticulture, Hebei Agricultural University, Baoding, 071001, China.
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15
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Kirk P, Benitez-Alfonso Y. Plasmodesmata Structural Components and Their Role in Signaling and Plant Development. Methods Mol Biol 2022; 2457:3-22. [PMID: 35349130 DOI: 10.1007/978-1-0716-2132-5_1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Plasmodesmata are plant intercellular channels that mediate the transport of small and large molecules including RNAs and transcription factors (TFs) that regulate plant development. In this review, we present current research on plasmodesmata form and function and discuss the main regulatory pathways. We show the progress made in the development of approaches and tools to dissect the plasmodesmata proteome in diverse plant species and discuss future perspectives and challenges in this field of research.
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Affiliation(s)
- Philip Kirk
- Centre for Plant Science, School of Biology, University of Leeds, Leeds, UK
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16
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Poaceae-specific cell wall-derived oligosaccharides activate plant immunity via OsCERK1 during Magnaporthe oryzae infection in rice. Nat Commun 2021. [DOI: 10.1038/s41467-021-22456-x\] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
AbstractMany phytopathogens secrete cell wall degradation enzymes (CWDEs) to damage host cells and facilitate colonization. As the major components of the plant cell wall, cellulose and hemicellulose are the targets of CWDEs. Damaged plant cells often release damage-associated molecular patterns (DAMPs) to trigger plant immune responses. Here, we establish that the fungal pathogen Magnaporthe oryzae secretes the endoglucanases MoCel12A and MoCel12B during infection of rice (Oryza sativa). These endoglucanases target hemicellulose of the rice cell wall and release two specific oligosaccharides, namely the trisaccharide 31-β-D-Cellobiosyl-glucose and the tetrasaccharide 31-β-D-Cellotriosyl-glucose. 31-β-D-Cellobiosyl-glucose and 31-β-D-Cellotriosyl-glucose bind the immune receptor OsCERK1 but not the chitin binding protein OsCEBiP. However, they induce the dimerization of OsCERK1 and OsCEBiP. In addition, these Poaceae cell wall-specific oligosaccharides trigger a burst of reactive oxygen species (ROS) that is largely compromised in oscerk1 and oscebip mutants. We conclude that 31-β-D-Cellobiosyl-glucose and 31-β-D-Cellotriosyl-glucose are specific DAMPs released from the hemicellulose of rice cell wall, which are perceived by an OsCERK1 and OsCEBiP immune complex during M. oryzae infection in rice.
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17
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McCubbin TJ, Braun DM. Phloem anatomy and function as shaped by the cell wall. JOURNAL OF PLANT PHYSIOLOGY 2021; 266:153526. [PMID: 34555540 DOI: 10.1016/j.jplph.2021.153526] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/12/2021] [Accepted: 09/13/2021] [Indexed: 06/13/2023]
Abstract
The partitioning of assimilated carbon is a complex process that involves the loading, long-distance transport, and subsequent unloading of carbohydrates from source to sink tissues. The network of plumbing that facilitates this coordinated process is the phloem tissue. Our understanding of the physiology of phloem transport has grown tremendously since the modern theory of mass flow was first put forward, aided by the concomitant progress of technology and experimental methodologies. Recent findings have put a renewed emphasis on the underlying anatomy of the phloem, and in particular the important role that cell walls play in enabling the high-pressure flow of photoassimilates through the sieve element. This review will briefly summarize the foundational work in phloem anatomy and highlight recent work exploring the physiology of phloem cell wall structure and mechanics.
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Affiliation(s)
- Tyler J McCubbin
- Division of Plant Science and Technology, Interdisciplinary Plant Group, The Missouri Maize Center, University of Missouri,Columbia, MO, 65211, USA
| | - David M Braun
- Division of Plant Science and Technology, Interdisciplinary Plant Group, The Missouri Maize Center, University of Missouri,Columbia, MO, 65211, USA; Division of Biological Sciences, University of Missouri, Columbia, MO, 65211, USA.
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18
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Huang WX, Chen XW, Wu L, Yu ZS, Gao MY, Zhao HM, Mo CH, Li YW, Cai QY, Wong MH, Li H. Root cell wall chemistry remodelling enhanced arsenic fixation of a cabbage cultivar. JOURNAL OF HAZARDOUS MATERIALS 2021; 420:126165. [PMID: 34273883 DOI: 10.1016/j.jhazmat.2021.126165] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 04/20/2021] [Accepted: 05/17/2021] [Indexed: 05/27/2023]
Abstract
The low- and high-arsenic (As) transferring cultivars (LTC and HTC) of cabbage showed significant differences in As uptake and distribution. We hypothesise that chemistry of root cell wall matrix plays a critical role. LTC and HTC were treated with As and grown for 60 days. As concentration and distribution at subcellular and cell wall component (pectin, hemicellulose and lignin) levels were determined. Remodelling enzymes (PME and PAL) and functional groups of cell wall were analysed. Results showed that shoot biomass of LTC was not affected by As. Less As was accumulated in shoot of LTC than HTC. LTC allocated more As in root and majority of As was deposited in cell wall. LTC had more hemicellulose 1 (HC1) and lignin, PME and PAL activities. The uronic acid contents of pectin, HC1 or HC2 were all positively (P < 0.05) correlated with As concentrations in each component, respectively. Chemistry of LTC root cell wall was remodelled in terms of changes in porosity, HC and lignin contents, and functional groups, which potentially exerted coupling effects on As entering and deposition. The LTC can restrain As in roots through changing characteristics of root cell wall matrix.
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Affiliation(s)
- Wei Xiong Huang
- Guangdong Provincial Research Centre for Environment Pollution Control and Remediation Materials, Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Xun Wen Chen
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China; State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Li Wu
- Guangdong Provincial Research Centre for Environment Pollution Control and Remediation Materials, Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Zheng Sheng Yu
- Guangdong Provincial Research Centre for Environment Pollution Control and Remediation Materials, Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Meng Ying Gao
- Guangdong Provincial Research Centre for Environment Pollution Control and Remediation Materials, Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Hai Ming Zhao
- Guangdong Provincial Research Centre for Environment Pollution Control and Remediation Materials, Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Ce Hui Mo
- Guangdong Provincial Research Centre for Environment Pollution Control and Remediation Materials, Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Yan Wen Li
- Guangdong Provincial Research Centre for Environment Pollution Control and Remediation Materials, Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Quan Ying Cai
- Guangdong Provincial Research Centre for Environment Pollution Control and Remediation Materials, Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Ming Hung Wong
- Guangdong Provincial Research Centre for Environment Pollution Control and Remediation Materials, Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China; The Education University of Hong Kong, Tai Po, Hong Kong, China
| | - Hui Li
- Guangdong Provincial Research Centre for Environment Pollution Control and Remediation Materials, Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China.
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19
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Zhu JY, Agarwal UP, Ciesielski PN, Himmel ME, Gao R, Deng Y, Morits M, Österberg M. Towards sustainable production and utilization of plant-biomass-based nanomaterials: a review and analysis of recent developments. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:114. [PMID: 33957955 PMCID: PMC8101122 DOI: 10.1186/s13068-021-01963-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 04/23/2021] [Indexed: 05/03/2023]
Abstract
Plant-biomass-based nanomaterials have attracted great interest recently for their potential to replace petroleum-sourced polymeric materials for sustained economic development. However, challenges associated with sustainable production of lignocellulosic nanoscale polymeric materials (NPMs) need to be addressed. Producing materials from lignocellulosic biomass is a value-added proposition compared with fuel-centric approach. This report focuses on recent progress made in understanding NPMs-specifically lignin nanoparticles (LNPs) and cellulosic nanomaterials (CNMs)-and their sustainable production. Special attention is focused on understanding key issues in nano-level deconstruction of cell walls and utilization of key properties of the resultant NPMs to allow flexibility in production to promote sustainability. Specifically, suitable processes for producing LNPs and their potential for scaled-up production, along with the resultant LNP properties and prospective applications, are discussed. In the case of CNMs, terminologies such as cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs) used in the literature are examined. The term cellulose nano-whiskers (CNWs) is used here to describe a class of CNMs that has a morphology similar to CNCs but without specifying its crystallinity, because most applications of CNCs do not need its crystalline characteristic. Additionally, progress in enzymatic processing and drying of NPMs is also summarized. Finally, the report provides some perspective of future research that is likely to result in commercialization of plant-based NPMs.
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Affiliation(s)
- J Y Zhu
- USDA Forest Products Laboratory, One Gifford Pinchot Dr, Madison, WI, USA.
| | - Umesh P Agarwal
- USDA Forest Products Laboratory, One Gifford Pinchot Dr, Madison, WI, USA
| | | | | | - Runan Gao
- Renewable Bioproducts Institute, School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, USA
- College of Materials Science and Engineering, Northeast Forestry University, Harbin, Heilongjiang, China
| | - Yulin Deng
- Renewable Bioproducts Institute, School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Maria Morits
- Department of Bioproducts and Biosystems, Aalto University, Espoo, Finland
| | - Monika Österberg
- Department of Bioproducts and Biosystems, Aalto University, Espoo, Finland
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20
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Zhang G, Ge C, Xu P, Wang S, Cheng S, Han Y, Wang Y, Zhuang Y, Hou X, Yu T, Xu X, Deng S, Li Q, Yang Y, Yin X, Wang W, Liu W, Zheng C, Sun X, Wang Z, Ming R, Dong S, Ma J, Zhang X, Chen C. The reference genome of Miscanthus floridulus illuminates the evolution of Saccharinae. NATURE PLANTS 2021; 7:608-618. [PMID: 33958777 PMCID: PMC8238680 DOI: 10.1038/s41477-021-00908-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 03/29/2021] [Indexed: 05/05/2023]
Abstract
Miscanthus, a member of the Saccharinae subtribe that includes sorghum and sugarcane, has been widely studied as a feedstock for cellulosic biofuel production. Here, we report the sequencing and assembly of the Miscanthus floridulus genome by the integration of PacBio sequencing and Hi-C mapping, resulting in a chromosome-scale, high-quality reference genome of the genus Miscanthus. Comparisons among Saccharinae genomes suggest that Sorghum split first from the common ancestor of Saccharum and Miscanthus, which subsequently diverged from each other, with two successive whole-genome duplication events occurring independently in the Saccharum genus and one whole-genome duplication occurring in the Miscanthus genus. Fusion of two chromosomes occurred during rediploidization in M. floridulus and no significant subgenome dominance was observed. A survey of cellulose synthases (CesA) in M. floridulus revealed quite high expression of most CesA genes in growing stems, which is in agreement with the high cellulose content of this species. Resequencing and comparisons of 75 Miscanthus accessions suggest that M. lutarioriparius is genetically close to M. sacchariflorus and that M. floridulus is more distantly related to other species and is more genetically diverse. This study provides a valuable genomic resource for molecular breeding and improvement of Miscanthus and Saccharinae crops.
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Affiliation(s)
- Guobin Zhang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Chunxia Ge
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Pingping Xu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Shukai Wang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Senan Cheng
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Yanbin Han
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Yancui Wang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Yongbin Zhuang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Xinwei Hou
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Ting Yu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Xitong Xu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Shuhan Deng
- Novogene Bioinformatics Institute, Beijing, China
| | - Quanquan Li
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Yinqing Yang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Xiaoru Yin
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Weidong Wang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Wenxue Liu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Chunxiao Zheng
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Xuezhen Sun
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Zhenlin Wang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Ray Ming
- Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Shuting Dong
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Jianxin Ma
- Department of Agronomy, Purdue University, West Lafayette, IN, USA
| | - Xiansheng Zhang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China
| | - Cuixia Chen
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, China.
- College of Agronomy, Shandong Agricultural University, Taian, China.
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Yang C, Liu R, Pang J, Ren B, Zhou H, Wang G, Wang E, Liu J. Poaceae-specific cell wall-derived oligosaccharides activate plant immunity via OsCERK1 during Magnaporthe oryzae infection in rice. Nat Commun 2021; 12:2178. [PMID: 33846336 PMCID: PMC8042013 DOI: 10.1038/s41467-021-22456-x] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 03/10/2021] [Indexed: 02/01/2023] Open
Abstract
Many phytopathogens secrete cell wall degradation enzymes (CWDEs) to damage host cells and facilitate colonization. As the major components of the plant cell wall, cellulose and hemicellulose are the targets of CWDEs. Damaged plant cells often release damage-associated molecular patterns (DAMPs) to trigger plant immune responses. Here, we establish that the fungal pathogen Magnaporthe oryzae secretes the endoglucanases MoCel12A and MoCel12B during infection of rice (Oryza sativa). These endoglucanases target hemicellulose of the rice cell wall and release two specific oligosaccharides, namely the trisaccharide 31-β-D-Cellobiosyl-glucose and the tetrasaccharide 31-β-D-Cellotriosyl-glucose. 31-β-D-Cellobiosyl-glucose and 31-β-D-Cellotriosyl-glucose bind the immune receptor OsCERK1 but not the chitin binding protein OsCEBiP. However, they induce the dimerization of OsCERK1 and OsCEBiP. In addition, these Poaceae cell wall-specific oligosaccharides trigger a burst of reactive oxygen species (ROS) that is largely compromised in oscerk1 and oscebip mutants. We conclude that 31-β-D-Cellobiosyl-glucose and 31-β-D-Cellotriosyl-glucose are specific DAMPs released from the hemicellulose of rice cell wall, which are perceived by an OsCERK1 and OsCEBiP immune complex during M. oryzae infection in rice.
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Affiliation(s)
- Chao Yang
- grid.9227.e0000000119573309State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China ,grid.410726.60000 0004 1797 8419CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
| | - Rui Liu
- grid.9227.e0000000119573309State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China ,grid.410726.60000 0004 1797 8419CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
| | - Jinhuan Pang
- grid.9227.e0000000119573309State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Bin Ren
- grid.410727.70000 0001 0526 1937State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Huanbin Zhou
- grid.410727.70000 0001 0526 1937State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Gang Wang
- grid.9227.e0000000119573309National key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Ertao Wang
- grid.9227.e0000000119573309National key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Jun Liu
- grid.9227.e0000000119573309State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China ,grid.410726.60000 0004 1797 8419CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
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Park S, Ding SY. The N-terminal zinc finger of CELLULOSE SYNTHASE6 is critical in defining its functional properties by determining the level of homodimerization in Arabidopsis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 103:1826-1838. [PMID: 32524705 DOI: 10.1111/tpj.14870] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 05/25/2020] [Accepted: 06/02/2020] [Indexed: 06/11/2023]
Abstract
Primary cell wall cellulose is synthesized by the cellulose synthase complex (CSC) containing CELLULOSE SYNTHASE1 (CESA1), CESA3 and one of four CESA6-like proteins in Arabidopsis. It has been proposed that the CESA6-like proteins occupy the same position in the CSC, but their underlying selection mechanism remains unclear. We produced a chimeric CESA5 by replacing its N-terminal zinc finger with its CESA6 counterpart to investigate the consequences for its homodimerization, a crucial step in forming higher-order structures during assembly of the CSC. We found that the mutant phenotypes of prc1-1, a cesa6 null mutant, were rescued by the chimeric CESA5, and became comparable to the wild type (WT) and prc1-1 complemented by WT CESA6 in regard to plant growth, cellulose content, cellulose microfibril organization, CSC dynamics and subcellular localization. Bimolecular fluorescence complementation assays were employed to evaluate pairwise interactions between the N-terminal regions of CESA1, CESA3, CESA5, CESA6 and the chimeric CESA5. We verified that the chimeric CESA5 explicitly interacted with all the other CESA partners, comparable to CESA6, whereas interaction between CESA5 with itself was significantly weaker than that of all other CESA pairs. Our findings suggest that the homodimerization of CESA6 through its N-terminal zinc finger is critical in defining its functional properties, and possibly determines its intrinsic roles in facilitating higher-order structures in CSCs.
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Affiliation(s)
- Sungjin Park
- Department of Plant Biology, Michigan State University, 612 Wilson Road, East Lansing, MI, 48824, USA
- Great Lakes Bioenergy Research Center, Michigan State University, 612 Wilson Road, East Lansing, MI, 48824, USA
| | - Shi-You Ding
- Department of Plant Biology, Michigan State University, 612 Wilson Road, East Lansing, MI, 48824, USA
- Great Lakes Bioenergy Research Center, Michigan State University, 612 Wilson Road, East Lansing, MI, 48824, USA
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Grunin YB, Grunin LY, Schiraya VY, Ivanova MS, Masas DS. Cellulose–water system’s state analysis by proton nuclear magnetic resonance and sorption measurements. BIORESOUR BIOPROCESS 2020. [DOI: 10.1186/s40643-020-00332-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
AbstractMost cellulose-based materials’ manufacturing processes include processing this biopolymer in an aqueous medium. Sorption properties depend on cellulose supramolecular structure and nature of its change during moistening. Plenty of researchers’ efforts have been directed to the development of scientifically sound and commercially reliable processes over the past decade for the cellulose fibers’ dispersion in an aqueous medium. Therefore, it needs a more detailed study of the cellulose–water system components’ interaction. This study presents the supramolecular structure and sorption properties of native cotton cellulose research results obtained by 1H NMR relaxation, spectroscopy and sorption measurements. Hydrophilic properties of cellulose as an adsorbent are characterized, taking into account a porous system between its structural elements. We examine in detail water adsorption on the active surface of cellulose Iβ. We also demonstrate the approach for determining the entropy change in the first two layers of adsorbed water and estimate this value increased during adsorption. Cellulose moistening is accompanied by the decomposition of macrofibrils into microfibrils and is manifested in a crystallinity decrease and a specific surface area growth.
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Transcriptome Analysis of Wounding in the Model Grass Lolium temulentum. PLANTS 2020; 9:plants9060780. [PMID: 32580425 PMCID: PMC7356841 DOI: 10.3390/plants9060780] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/16/2020] [Accepted: 06/19/2020] [Indexed: 11/29/2022]
Abstract
For forage and turf grasses, wounding is a predominant stress that often results in extensive loss of vegetative tissues followed by rapid regrowth. Currently, little is known concerning the perception, signaling, or molecular responses associated with wound stress in forage- and turf-related grasses. A transcriptome analysis of Lolium temulentum plants subjected to severe wounding revealed 9413 upregulated and 7704 downregulated, distinct, differentially expressed genes (DEGs). Categories related to signaling, transcription, and response to stimuli were enriched in the upregulated DEGs. Specifically, sequences annotated as enzymes involved in hormone biosynthesis/action and cell wall modifications, mitogen-activated protein kinases, WRKY transcription factors, proteinase inhibitors, and pathogen defense-related DEGs were identified. Surprisingly, DEGs related to heat shock and chaperones were more prevalent in the downregulated DEGs when compared with the upregulated DEGs. This wound transcriptome analysis is the first step in identifying the molecular components and pathways used by grasses in response to wounding. The information gained from the analysis will provide a valuable molecular resource that will be used to develop approaches that can improve the recovery, regrowth, and long-term fitness of forage and turf grasses before/after cutting or grazing.
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Grunin YB, Ivanova MS, Masas DS, Grunin LY. Thermodynamics of Adsorption in a Cellulose–Water System. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2020. [DOI: 10.1134/s0036024420040056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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26
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Mielke S, Gasperini D. Interplay between Plant Cell Walls and Jasmonate Production. PLANT & CELL PHYSIOLOGY 2019; 60:2629-2637. [PMID: 31241137 DOI: 10.1093/pcp/pcz119] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 06/04/2019] [Indexed: 05/23/2023]
Abstract
Plant cell walls are sophisticated carbohydrate-rich structures representing the immediate contact surface with the extracellular environment, often serving as the first barrier against biotic and abiotic stresses. Notably, a variety of perturbations in plant cell walls result in upregulated jasmonate (JA) production, a phytohormone with essential roles in defense and growth responses. Hence, cell wall-derived signals can initiate intracellular JA-mediated responses and the elucidation of the underlying signaling pathways could provide novel insights into cell wall maintenance and remodeling, as well as advance our understanding on how is JA biosynthesis initiated. This Mini Review will describe current knowledge about cell wall-derived damage signals and their effects on JA biosynthesis, as well as provide future perspectives.
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Affiliation(s)
- Stefan Mielke
- Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, Weinberg 3, Halle (Saale) 06120, Germany
| | - Debora Gasperini
- Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, Weinberg 3, Halle (Saale) 06120, Germany
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Park S, Song B, Shen W, Ding SY. A mutation in the catalytic domain of cellulose synthase 6 halts its transport to the Golgi apparatus. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:6071-6083. [PMID: 31559423 DOI: 10.1093/jxb/erz369] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 08/20/2019] [Indexed: 05/20/2023]
Abstract
Cellulose microfibrils, which form the mechanical framework of the plant cell wall, are synthesized by the cellulose synthase complex in the plasma membrane. Here, we introduced point mutations into the catalytic domain of cellulose synthase 6 (CESA6) in Arabidopsis to produce enhanced yellow fluorescent protein (EYFP)-tagged CESA6D395N, CESA6Q823E, and CESA6D395N+Q823E, which were exogenously produced in a cesa6 null mutant, prc1-1. Comparison of these mutants in terms of plant phenotype, cellulose content, cellulose synthase complex dynamics, and organization of cellulose microfibrils showed that prc1-1 expressing EYFP:CESA6D395N or CESA6D395N+Q823E was nearly the same as prc1-1, whereas prc1-1 expressing EYFP:CESA6Q823E was almost identical to wild type and prc1-1 expressing EYFP:WT CESA6, indicating that CESA6D395N and CESA6D395N+Q823E do not function in cellulose synthesis, while CESA6Q823E is still functionally active. Total internal reflection fluorescence microscopy and confocal microscopy were used to monitor the subcellular localization of these proteins. We found that EYFP:CESA6D395N and EYFP:CESA6D395N+Q823E were absent from subcellular regions containing the Golgi and the plasma membrane, and they appeared to be retained in the endoplasmic reticulum. By contrast, EYFP:CESA6Q823E had a normal localization pattern, like that of wild-type EYFP:CESA6. Our results demonstrate that the D395N mutation in CESA6 interrupts its normal transport to the Golgi and its eventual participation in cellulose synthase complex assembly.
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Affiliation(s)
- Sungjin Park
- Department of Plant Biology, Michigan State University, 612 Wilson Road, East Lansing, MI, USA
- Great Lakes Bioenergy Center, Michigan State University, 612 Wilson Road, East Lansing, MI, USA
| | - Bo Song
- Department of Plant Biology, Michigan State University, 612 Wilson Road, East Lansing, MI, USA
| | - Wei Shen
- Department of Plant Biology, Michigan State University, 612 Wilson Road, East Lansing, MI, USA
- Great Lakes Bioenergy Center, Michigan State University, 612 Wilson Road, East Lansing, MI, USA
| | - Shi-You Ding
- Department of Plant Biology, Michigan State University, 612 Wilson Road, East Lansing, MI, USA
- Great Lakes Bioenergy Center, Michigan State University, 612 Wilson Road, East Lansing, MI, USA
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28
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Figueiredo R, Araújo P, Llerena JPP, Mazzafera P. Suberin and hemicellulose in sugarcane cell wall architecture and crop digestibility: A biotechnological perspective. Food Energy Secur 2019. [DOI: 10.1002/fes3.163] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Raquel Figueiredo
- Department of Plant Biology Institute of Biology State University of Campinas Campinas Brazil
| | - Pedro Araújo
- Department of Genetics, Evolution and Bioagents Institute of Biology State University of Campinas Campinas Brazil
| | - Juan Pablo P. Llerena
- Department of Plant Biology Institute of Biology State University of Campinas Campinas Brazil
| | - Paulo Mazzafera
- Department of Plant Biology Institute of Biology State University of Campinas Campinas Brazil
- Department of Crop Science College of Agriculture Luiz de Queiroz University of São Paulo Piracicaba Brazil
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Zorić AS, Morina F, Toševski I, Tosti T, Jović J, Krstić O, Veljović-Jovanović S. Resource allocation in response to herbivory and gall formation in Linaria vulgaris. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 135:224-232. [PMID: 30578998 DOI: 10.1016/j.plaphy.2018.11.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 11/27/2018] [Accepted: 11/27/2018] [Indexed: 06/09/2023]
Abstract
Trehalose and its precursor, trehalose 6-phosphate (T6P), are essential regulators of plant response to abiotic and biotic stress. Here we used the specific host-insect interaction between Linaria vulgaris (Plantaginaceae) and stem-galling weevil, Rhinusa pilosa (Mecinini, Curculionidae) with the aim to distinguish carbohydrate allocation patterns in response to herbivory, gall formation (G1, 24 h after oviposition), and gall development (G2, 7 days after oviposition) under controlled conditions. The hypothesis is that herbivory and galling induce distinct responses in both leaves and stems, and that shifts in carbon allocations are regulated by signaling sugars. Systemic response to herbivory was accumulation of T6P and maltose. The main feature of G1 in the stems was accumulation of trehalose, accompanied by increased T6P, turanose and glucose content, oppositely to the leaves. In G2, galls had 3-folds higher weight than controls, with further accumulation of fructose, glucose, turanose, and total water-insoluble carbohydrates (TIC), while the sucrose/hexose ratio decreased. Analysis of fast chlorophyll fluorescence kinetic (OJIP) transients in G2 showed a slight decrease in quantum yield of electron transport flux from QA to QB, and towards photosystem I acceptor side, correlated with the decreased content of photosynthetic pigments and hexoses accumulation. Redistribution of photosynthates, and accumulation of T6P were induced in response to herbivory, indicating its signaling role. The results support the hypothesis that R. pilosa can induce plant reprogramming towards the accumulation of beneficial carbohydrates in developing gall by mechanisms which include both T6P and trehalose.
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Affiliation(s)
- Ana Sedlarević Zorić
- Institute for Multidisciplinary Research, University of Belgrade, Belgrade, Serbia
| | - Filis Morina
- Institute for Multidisciplinary Research, University of Belgrade, Belgrade, Serbia; Biology Centre of the Czech Academy of Sciences, Institute of Plant Molecular Biology, České Budejovice, Czech Republic.
| | - Ivo Toševski
- CABI, Delémont, Switzerland; Institute for Plant Protection and Environment, Department of Plant Pests, Zemun, Serbia
| | - Tomislav Tosti
- University of Belgrade, Faculty of Chemistry, Belgrade, Serbia
| | - Jelena Jović
- Institute for Plant Protection and Environment, Department of Plant Pests, Zemun, Serbia
| | - Oliver Krstić
- Institute for Plant Protection and Environment, Department of Plant Pests, Zemun, Serbia
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Nawaz MA, Lin X, Chan TF, Imtiaz M, Rehman HM, Ali MA, Baloch FS, Atif RM, Yang SH, Chung G. Characterization of Cellulose Synthase A (CESA) Gene Family in Eudicots. Biochem Genet 2018; 57:248-272. [PMID: 30267258 DOI: 10.1007/s10528-018-9888-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 09/20/2018] [Indexed: 12/30/2022]
Abstract
Cellulose synthase A (CESA) is a key enzyme involved in the complex process of plant cell wall biosynthesis, and it remains a productive subject for research. We employed systems biology approaches to explore structural diversity of eudicot CESAs by exon-intron organization, mode of duplication, synteny, and splice site analyses. Using a combined phylogenetics and comparative genomics approach coupled with co-expression networks we reconciled the evolution of cellulose synthase gene family in eudicots and found that the basic forms of CESA proteins are retained in angiosperms. Duplications have played an important role in expansion of CESA gene family members in eudicots. Co-expression networks showed that primary and secondary cell wall modules are duplicated in eudicots. We also identified 230 simple sequence repeat markers in 103 eudicot CESAs. The 13 identified conserved motifs in eudicots will provide a basis for gene identification and functional characterization in other plants. Furthermore, we characterized (in silico) eudicot CESAs against senescence and found that expression levels of CESAs decreased during leaf senescence.
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Affiliation(s)
- Muhammad Amjad Nawaz
- Department of Biotechnology, Chonnam National University, Chonnam, 59626, Republic of Korea
| | - Xiao Lin
- Center for Soybean Research, State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Ting-Fung Chan
- Center for Soybean Research, State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Muhammad Imtiaz
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510275, China
| | - Hafiz Mamoon Rehman
- Department of Biotechnology, Chonnam National University, Chonnam, 59626, Republic of Korea
| | - Muhammad Amjad Ali
- Department of Plant Pathology, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Faheem Shehzad Baloch
- Department of Field Crops, Faculty of Agricultural and Natural Science, Abant Izzet Baysal University, 14280, Bolu, Turkey
| | - Rana Muhammad Atif
- US-Pakistan Centre for Advanced Studies in Agriculture and Food Security, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Seung Hwan Yang
- Department of Biotechnology, Chonnam National University, Chonnam, 59626, Republic of Korea.
| | - Gyuhwa Chung
- Department of Biotechnology, Chonnam National University, Chonnam, 59626, Republic of Korea.
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31
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Hill JL, Hill AN, Roberts AW, Haigler CH, Tien M. Domain swaps of Arabidopsis secondary wall cellulose synthases to elucidate their class specificity. PLANT DIRECT 2018; 2:e00061. [PMID: 31245731 PMCID: PMC6508838 DOI: 10.1002/pld3.61] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 03/30/2018] [Accepted: 04/26/2018] [Indexed: 05/16/2023]
Abstract
Cellulose microfibrils are synthesized by membrane-embedded cellulose synthesis complexes (CSCs), currently modeled as hexamers of cellulose synthase (CESA) trimers. The three paralogous CESAs involved in secondary cell wall (SCW) cellulose biosynthesis in Arabidopsis (CESA4, CESA7, CESA8) are similar, but nonredundant, with all three isoforms required for assembly and function of the CSC. The molecular basis of protein-protein recognition among the isoforms is not well understood. To investigate the locations of the interfaces that are responsible for isoform recognition, we swapped three domains between the Arabidopsis CESAs required for SCW synthesis (CESA4, CESA7, and CESA8): N-terminus, central domain containing the catalytic core, and C-terminus. Chimeric genes with all pairwise permutations of the domains were tested for in vivo functionality within knockout mutant backgrounds of cesa4, cesa7, and cesa8. Immunoblotting with isoform-specific antibodies confirmed the anticipated protein expression in transgenic plants. The percent recovery of stem height and crystalline cellulose content was assayed, as compared to wild type, the mutant background lines, and other controls. Retention of the native central domain was sufficient for CESA8 chimeras to function, with neither its N-terminal nor C-terminal domains required. The C-terminal domain is required for class-specific function of CESA4 and CESA7, and CESA7 also requires its own N-terminus. Across all isoforms, the results indicate that the central domain, as well as the N- and C-terminal regions, contributes to class-specific function variously in Arabidopsis CESA4, CESA7, and CESA8.
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Affiliation(s)
- Joseph Lee Hill
- Department of Biochemistry and Molecular BiologyThe Center for Lignocellulose Structure and FormationPennsylvania State UniversityUniversity ParkPennsylvania
- Present address:
Department of HorticultureMichigan State UniversityEast LansingMichigan48824
| | - Ashley Nicole Hill
- Department of Biochemistry and Molecular BiologyThe Center for Lignocellulose Structure and FormationPennsylvania State UniversityUniversity ParkPennsylvania
| | - Alison W. Roberts
- Department of Biological SciencesUniversity of Rhode IslandKingstonRhode Island
| | - Candace H. Haigler
- Department of Crop and Soil Sciences and Department of Plant and Microbial BiologyNorth Carolina State UniversityRaleighNorth Carolina
| | - Ming Tien
- Department of Biochemistry and Molecular BiologyThe Center for Lignocellulose Structure and FormationPennsylvania State UniversityUniversity ParkPennsylvania
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Le PY, Jeon HW, Kim MH, Park EJ, Lee H, Hwang I, Han KH, Ko JH. Gain-of-function mutation of AtDICE1, encoding a putative endoplasmic reticulum-localized membrane protein, causes defects in anisotropic cell elongation by disturbing cell wall integrity in Arabidopsis. ANNALS OF BOTANY 2018; 122:151-164. [PMID: 29659701 PMCID: PMC6025203 DOI: 10.1093/aob/mcy049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 03/15/2018] [Indexed: 05/30/2023]
Abstract
Background and Aims Anisotropic cell elongation depends on cell wall relaxation and cellulose microfibril arrangement. The aim of this study was to characterize the molecular function of AtDICE1 encoding a novel transmembrane protein involved in anisotropic cell elongation in Arabidopsis. Methods Phenotypic characterizations of transgenic Arabidopsis plants mis-regulating AtDICE1 expression with different pharmacological treatments were made, and biochemical, cell biological and transcriptome analyses were performed. Key Results Upregulation of AtDICE1 in Arabidopsis (35S::AtDICE1) resulted in severe dwarfism, probably caused by defects in anisotropic cell elongation. Epidermal cell swelling was evident in all tissues, and abnormal secondary wall thickenings were observed in pith cells of stems. These phenotypes were reproduced not only by inducible expression of AtDICE1 but also by overexpression of its poplar homologue in Arabidopsis. RNA interference suppression lines of AtDICE1 resulted in no observable phenotypic changes. Interestingly, wild-type plants treated with isoxaben, a cellulose biosynthesis inhibitor, phenocopied the 35S::AtDICE1 plants, suggesting that cellulose biosynthesis was compromised in the 35S::AtDICE1 plants. Indeed, disturbed cortical microtubule arrangements in 35S::AtDICE1/GFP-TuA6 plants were observed, and the cellulose content was significantly reduced in 35S::AtDICE1 plants. A promoter::GUS analysis showed that AtDICE1 is mainly expressed in vascular tissue, and transient expression of GFP:AtDICE1 in tobacco suggests that AtDICE1 is probably localized in the endoplasmic reticulum (ER). In addition, the external N-terminal conserved domain of AtDICE1 was found to be necessary for AtDICE1 function. Whole transcriptome analyses of 35S::AtDICE1 revealed that many genes involved in cell wall modification and stress/defence responses were mis-regulated. Conclusions AtDICE1, a novel ER-localized transmembrane protein, may contribute to anisotropic cell elongation in the formation of vascular tissue by affecting cellulose biosynthesis.
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Affiliation(s)
- Phi-Yen Le
- Department of Plant & Environmental New Resources, Kyung Hee University, Yongin, Republic of Korea
| | - Hyung-Woo Jeon
- Department of Plant & Environmental New Resources, Kyung Hee University, Yongin, Republic of Korea
| | - Min-Ha Kim
- Department of Plant & Environmental New Resources, Kyung Hee University, Yongin, Republic of Korea
| | - Eung-Jun Park
- Division of Forest Biotechnology, Korea Forest Research Institute, Suwon, Republic of Korea
| | - Hyoshin Lee
- Division of Forest Biotechnology, Korea Forest Research Institute, Suwon, Republic of Korea
| | - Indeok Hwang
- Department of Horticulture and Department of Forestry, Michigan State University, East Lansing, MI, USA
| | - Kyung-Hwan Han
- Department of Horticulture and Department of Forestry, Michigan State University, East Lansing, MI, USA
| | - Jae-Heung Ko
- Department of Plant & Environmental New Resources, Kyung Hee University, Yongin, Republic of Korea
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Meier KK, Jones SM, Kaper T, Hansson H, Koetsier MJ, Karkehabadi S, Solomon EI, Sandgren M, Kelemen B. Oxygen Activation by Cu LPMOs in Recalcitrant Carbohydrate Polysaccharide Conversion to Monomer Sugars. Chem Rev 2018; 118:2593-2635. [PMID: 29155571 PMCID: PMC5982588 DOI: 10.1021/acs.chemrev.7b00421] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Natural carbohydrate polymers such as starch, cellulose, and chitin provide renewable alternatives to fossil fuels as a source for fuels and materials. As such, there is considerable interest in their conversion for industrial purposes, which is evidenced by the established and emerging markets for products derived from these natural polymers. In many cases, this is achieved via industrial processes that use enzymes to break down carbohydrates to monomer sugars. One of the major challenges facing large-scale industrial applications utilizing natural carbohydrate polymers is rooted in the fact that naturally occurring forms of starch, cellulose, and chitin can have tightly packed organizations of polymer chains with low hydration levels, giving rise to crystalline structures that are highly recalcitrant to enzymatic degradation. The topic of this review is oxidative cleavage of carbohydrate polymers by lytic polysaccharide mono-oxygenases (LPMOs). LPMOs are copper-dependent enzymes (EC 1.14.99.53-56) that, with glycoside hydrolases, participate in the degradation of recalcitrant carbohydrate polymers. Their activity and structural underpinnings provide insights into biological mechanisms of polysaccharide degradation.
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Affiliation(s)
- Katlyn K. Meier
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Stephen M. Jones
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Thijs Kaper
- DuPont Industrial Biosciences, 925 Page Mill Road, Palo Alto, California 94304, United States
| | - Henrik Hansson
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden
| | - Martijn J. Koetsier
- DuPont Industrial Biosciences, Netherlands, Nieuwe Kanaal 7-S, 6709 PA Wageningen, The Netherlands
| | - Saeid Karkehabadi
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden
| | - Edward I. Solomon
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Mats Sandgren
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden
| | - Bradley Kelemen
- DuPont Industrial Biosciences, 925 Page Mill Road, Palo Alto, California 94304, United States
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Chen L, Guo X, Cui Y, Zheng X, Yang H. Comparative Transcriptome Analysis Reveals Hormone Signaling Genes Involved in the Launch of Culm-Shape Differentiation in Dendrocalamus sinicus. Genes (Basel) 2017; 9:E4. [PMID: 29271945 PMCID: PMC5793157 DOI: 10.3390/genes9010004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 12/09/2017] [Accepted: 12/20/2017] [Indexed: 12/23/2022] Open
Abstract
Dendrocalamus sinicus is a sympodial bamboo species endemic to Yunnan Province, China, and is the strongest bamboo species in the world. However, there is substantial variation in the basal culm shape, i.e., straight culm (SC) and bent culm (BC), among different D. sinicus as a result of genetic and growth factors. This study performed a comparative transcriptomic analysis of bamboo shoots of two variants at the early, mid-, and late shoot-development stages to examine the molecular basis of this variation. In total, 98,479 unigenes were annotated, of which 13,495 were differentially expressed in pairwise comparisons of the six libraries. More differentially expressed genes (DEGs) were involved in SC than in BC culm development. The DEGs between BC and SC were assigned to 108 metabolic pathways. The 1064 DEGs in early development might mainly control the launch of culm-shape differentiation. Sixty genes encoding components of hormone signaling pathways were differentially expressed between BC5 and SC5, indicating complex hormonal regulation of culm differentiation. The AUX/IAA, ARF, PP2C, SnRK2, and ABF genes involved in auxin and abscisic acid signaling played key roles. These results help us to understand the molecular mechanism of culm variation and other aspects of culm development in D. sinicus.
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Affiliation(s)
- Lingna Chen
- Research Institute of Resources Insects, Chinese Academy of Forestry, Bailongsi, Panlong, Kunming 650233, China.
| | - Xiaojuan Guo
- Research Institute of Resources Insects, Chinese Academy of Forestry, Bailongsi, Panlong, Kunming 650233, China.
| | - Yongzhong Cui
- Research Institute of Resources Insects, Chinese Academy of Forestry, Bailongsi, Panlong, Kunming 650233, China.
| | - Xianggan Zheng
- Research Institute of Resources Insects, Chinese Academy of Forestry, Bailongsi, Panlong, Kunming 650233, China.
| | - Hanqi Yang
- Research Institute of Resources Insects, Chinese Academy of Forestry, Bailongsi, Panlong, Kunming 650233, China.
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Buckeridge MS. The evolution of the Glycomic Codes of extracellular matrices. Biosystems 2017; 164:112-120. [PMID: 28993247 DOI: 10.1016/j.biosystems.2017.10.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 09/30/2017] [Accepted: 10/03/2017] [Indexed: 12/12/2022]
Abstract
The extracellular matrices (ECMs) of living organisms are compartments responsible for maintenance of cell shape, cell adhesion, and cell communication. They are also involved in cell signaling and defense against the attack of pathogens. The plant cell walls have been recently defined as encoded structures that combine polysaccharides with other encoded structures (proteins and phenolic compounds). The term Glycomic Code has been used to define the set of mechanisms that generate cell wall architecture (the combination of polymers of different types) and biological function. Here, the composition of the extracellular matrices of archaea, bacteria, animals, fungi, algae, and plants was compared to understand how the Glycomic Code of these different organisms operate to produce polysaccharides and therefore how the Glycomic Code may have evolved in nature. It was found that the heterotrophs display EMC polysaccharides containing aminosugars (nitrogen-based polysaccharides) whereas the photosynthetic organisms have cellulose-based walls, with polymers that hardly present aminosugars in its composition. Another subgroup is of the organisms containing EMCs with sulfated polysaccharides (animals and red algae). The main hemicellulose found in plants (xyloglucan) is used as a case study along with other seed cell wall storage polysaccharides of plants to exemplify the evolution of the Glycomic Code in plants. Overall, the trends observed in this work shows for the first time how the Glycomic Code in ECMs of living organisms may have evolved and diversified in nature.
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Affiliation(s)
- Marcos S Buckeridge
- Systems and Synthetic Biology Center, Institute of Biosciences, Department of Botany, University of São Paulo, Brazil.
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Nawaz MA, Rehman HM, Baloch FS, Ijaz B, Ali MA, Khan IA, Lee JD, Chung G, Yang SH. Genome and transcriptome-wide analyses of cellulose synthase gene superfamily in soybean. JOURNAL OF PLANT PHYSIOLOGY 2017; 215:163-175. [PMID: 28704793 DOI: 10.1016/j.jplph.2017.04.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 04/12/2017] [Accepted: 04/14/2017] [Indexed: 05/28/2023]
Abstract
The plant cellulose synthase gene superfamily belongs to the category of type-2 glycosyltransferases, and is involved in cellulose and hemicellulose biosynthesis. These enzymes are vital for maintaining cell-wall structural integrity throughout plant life. Here, we identified 78 putative cellulose synthases (CS) in the soybean genome. Phylogenetic analysis against 40 reference Arabidopsis CS genes clustered soybean CSs into seven major groups (CESA, CSL A, B, C, D, E and G), located on 19 chromosomes (except chromosome 18). Soybean CS expansion occurred in 66 duplication events. Additionally, we identified 95 simple sequence repeat makers related to 44 CSs. We next performed digital expression analysis using publically available datasets to understand potential CS functions in soybean. We found that CSs were highly expressed during soybean seed development, a pattern confirmed with an Affymatrix soybean IVT array and validated with RNA-seq profiles. Within CS groups, CESAs had higher relative expression than CSLs. Soybean CS models were designed based on maximum average RPKM values. Gene co-expression networks were developed to explore which CSs could work together in soybean. Finally, RT-PCR analysis confirmed the expression of 15 selected CSs during all four seed developmental stages.
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Affiliation(s)
- Muhammad Amjad Nawaz
- Department of Biotechnology, Chonnam National University, Yeosu, Chonnam, 59626, Republic of Korea
| | - Hafiz Mamoon Rehman
- Department of Biotechnology, Chonnam National University, Yeosu, Chonnam, 59626, Republic of Korea
| | | | - Babar Ijaz
- Department of Plant Genetics and Breeding, China Agricultural University, Beijing 100193, China
| | - Muhammad Amjad Ali
- Department of Plant Pathology, University of Agriculture, Faisalabad 38040, Pakistan
| | - Iqrar Ahmad Khan
- Institute of Horticultural Sciences, University of Agriculture, Faisalabad 38040, Pakistan
| | - Jeong Dong Lee
- Division of Plant Biosciences, Kyungpook National University, Daegu 702-701, Republic of Korea
| | - Gyuhwa Chung
- Department of Biotechnology, Chonnam National University, Yeosu, Chonnam, 59626, Republic of Korea.
| | - Seung Hwan Yang
- Department of Biotechnology, Chonnam National University, Yeosu, Chonnam, 59626, Republic of Korea.
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Hill BL, Figueroa CM, Asencion Diez MD, Lunn JE, Iglesias AA, Ballicora MA. On the stability of nucleoside diphosphate glucose metabolites: implications for studies of plant carbohydrate metabolism. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:3331-3337. [PMID: 28859372 PMCID: PMC5853320 DOI: 10.1093/jxb/erx190] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 05/25/2017] [Indexed: 05/25/2023]
Abstract
Nucleoside diphosphate sugars (NDP-sugars) are the substrates for biosynthesis of oligo- and polysaccharides, such as starch and cellulose, and are also required for biosynthesis of nucleotides, ascorbic acid, several cofactors, glycoproteins and many secondary metabolites. A controversial study that questions the generally accepted pathway of ADP-glucose and starch synthesis in plants is based, in part, on claims that NDP-sugars are unstable at alkaline pH in the presence of Mg2+ and that this instability can lead to unreliable results from in vitro assays of enzyme activities. If substantiated, this claim would have far-reaching implications for many published studies that report on the activities of NDP-sugar metabolizing enzymes. To resolve this controversy, we investigated the stability of UDP- and ADP-glucose using biophysical, namely nuclear magnetic resonance (NMR), and highly specific enzymatic methods. Results obtained with both techniques indicate that NDP-sugars are not as unstable as previously suggested. Moreover, their calculated in vitro half-lives are significantly higher than estimates of their in planta turnover times. This indicates that the physico-chemical stability of NDP-sugars has little impact on their concentrations in vivo and that NDP-sugar levels are determined primarily by the relative rates of enzymatic synthesis and consumption. Our results refute one of the main arguments for the controversial pathway of starch synthesis from imported ADP-glucose produced by sucrose synthase in the cytosol.
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Affiliation(s)
- Benjamin L Hill
- Department of Chemistry and Biochemistry, Loyola University Chicago, 1068 West Sheridan Road, Chicago, IL, USA
| | - Carlos M Figueroa
- Instituto de Agrobiotecnología del Litoral, UNL, CONICET, FBCB, Colectora Ruta Nacional 168 km 0, Santa Fe, Argentina
| | - Matías D Asencion Diez
- Instituto de Agrobiotecnología del Litoral, UNL, CONICET, FBCB, Colectora Ruta Nacional 168 km 0, Santa Fe, Argentina
| | - John E Lunn
- Max Planck Institute of Molecular Plant Physiology, Am Muehlenberg, Potsdam-Golm, Germany
| | - Alberto A Iglesias
- Instituto de Agrobiotecnología del Litoral, UNL, CONICET, FBCB, Colectora Ruta Nacional 168 km 0, Santa Fe, Argentina
| | - Miguel A Ballicora
- Department of Chemistry and Biochemistry, Loyola University Chicago, 1068 West Sheridan Road, Chicago, IL, USA
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Grunin LY, Grunin YB, Nikolskaya EA, Sheveleva NN, Nikolaev IA. An NMR relaxation and spin diffusion study of cellulose structure during water adsorption. Biophysics (Nagoya-shi) 2017. [DOI: 10.1134/s0006350917020087] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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39
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Shi R, Wang JP, Lin YC, Li Q, Sun YH, Chen H, Sederoff RR, Chiang VL. Tissue and cell-type co-expression networks of transcription factors and wood component genes in Populus trichocarpa. PLANTA 2017; 245:927-938. [PMID: 28083709 DOI: 10.1007/s00425-016-2640-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 12/09/2016] [Indexed: 05/21/2023]
Abstract
Co-expression networks based on transcriptomes of Populus trichocarpa major tissues and specific cell types suggest redundant control of cell wall component biosynthetic genes by transcription factors in wood formation. We analyzed the transcriptomes of five tissues (xylem, phloem, shoot, leaf, and root) and two wood forming cell types (fiber and vessel) of Populus trichocarpa to assemble gene co-expression subnetworks associated with wood formation. We identified 165 transcription factors (TFs) that showed xylem-, fiber-, and vessel-specific expression. Of these 165 TFs, 101 co-expressed (correlation coefficient, r > 0.7) with the 45 secondary cell wall cellulose, hemicellulose, and lignin biosynthetic genes. Each cell wall component gene co-expressed on average with 34 TFs, suggesting redundant control of the cell wall component gene expression. Co-expression analysis showed that the 101 TFs and the 45 cell wall component genes each has two distinct groups (groups 1 and 2), based on their co-expression patterns. The group 1 TFs (44 members) are predominantly xylem and fiber specific, and are all highly positively co-expressed with the group 1 cell wall component genes (30 members), suggesting their roles as major wood formation regulators. Group 1 TFs include a lateral organ boundary domain gene (LBD) that has the highest number of positively correlated cell wall component genes (36) and TFs (47). The group 2 TFs have 57 members, including 14 vessel-specific TFs, and are generally less correlated with the cell wall component genes. An exception is a vessel-specific basic helix-loop-helix (bHLH) gene that negatively correlates with 20 cell wall component genes, and may function as a key transcriptional suppressor. The co-expression networks revealed here suggest a well-structured transcriptional homeostasis for cell wall component biosynthesis during wood formation.
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Affiliation(s)
- Rui Shi
- Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, 27695, USA
- Mountain Horticultural Crops Research and Extension Center, Department of Horticulture, North Carolina State University, Mills River, NC, 28759, USA
| | - Jack P Wang
- Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, 27695, USA
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, 150040, China
| | - Ying-Chung Lin
- Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, 27695, USA
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, 150040, China
- Department of Life Sciences, College of Life Science, National Taiwan University, Taipei, 10617, Taiwan
| | - Quanzi Li
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, 100091, China
| | - Ying-Hsuan Sun
- Department of Forestry, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Hao Chen
- Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, 27695, USA
| | - Ronald R Sederoff
- Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, 27695, USA.
| | - Vincent L Chiang
- Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, 27695, USA.
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, 150040, China.
- Department of Forest Biomaterials, North Carolina State University, Raleigh, NC, 27695, USA.
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40
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Gamuyao R, Nagai K, Ayano M, Mori Y, Minami A, Kojima M, Suzuki T, Sakakibara H, Higashiyama T, Ashikari M, Reuscher S. Hormone Distribution and Transcriptome Profiles in Bamboo Shoots Provide Insights on Bamboo Stem Emergence and Growth. PLANT & CELL PHYSIOLOGY 2017; 58:702-716. [PMID: 28204696 DOI: 10.1093/pcp/pcx023] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 02/01/2017] [Indexed: 05/20/2023]
Abstract
Growth and development are tightly co-ordinated events in the lifetime of living organisms. In temperate bamboo plants, spring is the season when environmental conditions are suitable for the emergence of new shoots. Previous studies demonstrated that bamboo plants undergo an energy-consuming 'fast stem growth' phase. However, the events during the initiation of stem elongation in bamboo are poorly understood. To understand the onset of bamboo stem growth, we performed hormone and transcriptome profiling of tissue regions in newly elongating shoots of the Moso bamboo Phyllostachys edulis. The growth hormones auxins, cytokinins and gibberellins accumulated in the shoot apex, while the stress hormones ABA, salicylic acid (SA) and jasmonic acid (JA) are predominantly found in the lower part of the stem. The mature basal part of the stem showed enrichment of transcripts associated with cell wall metabolism and biosynthesis of phenylpropanoid metabolites, such as lignin. In the young upper stem region, expression of cell formation- and DNA synthesis-related genes was enriched. Moreover, the apical region showed enhanced expression of genes involved in meristem maintenance, leaf differentiation and development, abaxial/adaxial polarity and flowering. Our findings integrate the spatial regulation of hormones and transcriptome programs during the initiation of bamboo stem growth.
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Affiliation(s)
- Rico Gamuyao
- Bioscience and Biotechnology Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, Japan
| | - Keisuke Nagai
- Bioscience and Biotechnology Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, Japan
| | - Madoka Ayano
- Bioscience and Biotechnology Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, Japan
| | - Yoshinao Mori
- Bioscience and Biotechnology Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, Japan
| | - Anzu Minami
- Bioscience and Biotechnology Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, Japan
| | - Mikiko Kojima
- RIKEN Center for Sustainable Resource Science, Suehiro, Tsurumi, Yokohama, Japan
| | - Takamasa Suzuki
- Division of Biological Science, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, Japan
| | - Hitoshi Sakakibara
- RIKEN Center for Sustainable Resource Science, Suehiro, Tsurumi, Yokohama, Japan
| | - Tetsuya Higashiyama
- Division of Biological Science, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, Japan
| | - Motoyuki Ashikari
- Bioscience and Biotechnology Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, Japan
| | - Stefan Reuscher
- Bioscience and Biotechnology Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, Japan
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Kumar M, Atanassov I, Turner S. Functional Analysis of Cellulose Synthase (CESA) Protein Class Specificity. PLANT PHYSIOLOGY 2017; 173:970-983. [PMID: 27923988 PMCID: PMC5291044 DOI: 10.1104/pp.16.01642] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 12/02/2016] [Indexed: 05/02/2023]
Abstract
The cellulose synthase complex (CSC) exhibits a 6-fold symmetry and is known as a "rosette." Each CSC is believed to contain between 18 and 24 CESA proteins that each synthesize an individual glucan chain. These chains form the microfibrils that confer the remarkable structural properties of cellulose. At least three different classes of CESA proteins are essential to form the CSC However, while organization of the CSC determines microfibril structure, how individual CESA proteins are organized within the CSC remains unclear. Parts of the plant CESA proteins map sufficiently well onto the bacterial CESA (BcsA) structure, indicating that they are likely to share a common catalytic mechanism. However, plant CESA proteins are much larger than the bacterial BcsA protein, prompting the suggestion that these plant-specific regions are important for interactions between CESA proteins and for conferring CESA class specificity. In this study, we have undertaken a comprehensive analysis of well-defined regions of secondary cell wall CESA proteins, with the aim of defining what distinguishes different CESA proteins and hence what determines the specificity of each CESA class. Our results demonstrate that CESA class specificity extends throughout the protein and not just in the highly variable regions. Furthermore, we find that different CESA isoforms vary greatly in their levels of site specificity and this is likely to be determined by the constraints imposed by their position within the CSC rather than their primary structure.
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Affiliation(s)
- Manoj Kumar
- University of Manchester, Faculty of Biology, Medicine and Health, Manchester M13 9PT, United Kingdom
| | - Ivan Atanassov
- University of Manchester, Faculty of Biology, Medicine and Health, Manchester M13 9PT, United Kingdom
| | - Simon Turner
- University of Manchester, Faculty of Biology, Medicine and Health, Manchester M13 9PT, United Kingdom
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Macedo L, Antonino de Souza Junior J, Coelho R, Fonseca F, Firmino A, Silva M, Fragoso R, Albuquerque E, Silva M, de Almeida Engler J, Terra W, Grossi-de-Sa M. Knocking down chitin synthase 2 by RNAi is lethal to the cotton boll weevil. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.biori.2017.04.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Gutiérrez-Luna FM, Navarro de la Sancha E, Valencia-Turcotte LG, Vázquez-Santana S, Rodríguez-Sotres R. Evidence for a non-overlapping subcellular localization of the family I isoforms of soluble inorganic pyrophosphatase in Arabidopsis thaliana. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2016; 253:229-242. [PMID: 27968992 DOI: 10.1016/j.plantsci.2016.10.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 09/01/2016] [Accepted: 10/11/2016] [Indexed: 06/06/2023]
Abstract
Pyrophosphate is a byproduct of macromolecular biosynthesis and its degradation gives a thermodynamic impulse to cell growth. Soluble inorganic pyrophosphatases (PPa) are present in all living cells, but in plants and other Eukaryotes membrane-bound H+-pumping pyrophosphatases may compete with these soluble counterparts for the substrate. In Arabidopsis thaliana there are six genes encoding for classic family I PPa isoforms, five cytoplasmic, and one considered to be organellar. Here, six transgenic stable A. thaliana lines, each expressing one of the PPa isoforms from this same plant species in fusion with a fluorescent protein, were obtained and analyzed under confocal and immunogold transmission electron microscopy. The results confirmed the cytoplasmic localization for isoforms 1-5, and showed an exclusive chloroplastic localization for isoform 6. In contrast to previous reports, the data presented here revealed a differential distribution pattern for the isoforms 1 and 5, in comparison to isoforms 2 and 3, and also the presence of isoform 4 in the intercellular space and cell wall, in addition to its presence in cytoplasm. To the best of our knowledge, this is the first report of a PPa family I protein localized in the intercellular space in plants.
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Affiliation(s)
- Francisca Morayna Gutiérrez-Luna
- Departamento De Bioquímica, Facultad De Química, UNAM, Av. Universidad 3000, Col. Cd. Universitaria. C.p. 04510, Ciudad De Mexico, Mexico; Universidad Nacional Autónoma De México, Av. Universidad 3000, Col. Cd. Universitaria. C.p. 04510, Ciudad De Mexico, Mexico
| | - Ernesto Navarro de la Sancha
- Departamento De Bioquímica, Facultad De Química, UNAM, Av. Universidad 3000, Col. Cd. Universitaria. C.p. 04510, Ciudad De Mexico, Mexico; Universidad Nacional Autónoma De México, Av. Universidad 3000, Col. Cd. Universitaria. C.p. 04510, Ciudad De Mexico, Mexico
| | - Lilián Gabriela Valencia-Turcotte
- Departamento De Bioquímica, Facultad De Química, UNAM, Av. Universidad 3000, Col. Cd. Universitaria. C.p. 04510, Ciudad De Mexico, Mexico; Universidad Nacional Autónoma De México, Av. Universidad 3000, Col. Cd. Universitaria. C.p. 04510, Ciudad De Mexico, Mexico
| | - Sonia Vázquez-Santana
- Departamento De Biología Comparada, Facultad De Ciencias, UNAM, Av. Universidad 3000, Col. Cd. Universitaria. C.p. 04510, Ciudad De Mexico, Mexico; Universidad Nacional Autónoma De México, Av. Universidad 3000, Col. Cd. Universitaria. C.p. 04510, Ciudad De Mexico, Mexico
| | - Rogelio Rodríguez-Sotres
- Departamento De Bioquímica, Facultad De Química, UNAM, Av. Universidad 3000, Col. Cd. Universitaria. C.p. 04510, Ciudad De Mexico, Mexico; Universidad Nacional Autónoma De México, Av. Universidad 3000, Col. Cd. Universitaria. C.p. 04510, Ciudad De Mexico, Mexico.
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Characterization of maize roothairless6 which encodes a D-type cellulose synthase and controls the switch from bulge formation to tip growth. Sci Rep 2016; 6:34395. [PMID: 27708345 PMCID: PMC5052636 DOI: 10.1038/srep34395] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 09/13/2016] [Indexed: 11/08/2022] Open
Abstract
Root hairs are tubular extensions of the epidermis. Root hairs of the monogenic recessive maize mutant roothairless 6 (rth6) are arrested after bulge formation during the transition to tip growth and display a rough cell surface. BSR-Seq in combination with Seq-walking and subsequent analyses of four independently generated mutant alleles established that rth6 encodes CSLD5 a plasma membrane localized 129 kD D-type cellulose synthase with eight transmembrane domains. Cellulose synthases are required for the biosynthesis of cellulose, the most abundant biopolymer of plant cell walls. Phylogenetic analyses revealed that RTH6 is part of a monocot specific clade of D-type cellulose synthases. D-type cellulose synthases are highly conserved in the plant kingdom with five gene family members in maize and homologs even among early land plants such as the moss Physcomitrella patens or the clubmoss Selaginella moellendorffii. Expression profiling demonstrated that rth6 transcripts are highly enriched in root hairs as compared to all other root tissues. Moreover, in addition to the strong knock down of rth6 expression in young primary roots of the mutant rth6, the gene is also significantly down-regulated in rth3 and rth5 mutants, while it is up-regulated in rth2 mutants, suggesting that these genes interact in cell wall biosynthesis.
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45
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Characterization of Cellulose Synthesis in Plant Cells. ScientificWorldJournal 2016; 2016:8641373. [PMID: 27314060 PMCID: PMC4897727 DOI: 10.1155/2016/8641373] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 04/02/2016] [Accepted: 04/28/2016] [Indexed: 12/22/2022] Open
Abstract
Cellulose is the most significant structural component of plant cell wall. Cellulose, polysaccharide containing repeated unbranched β (1-4) D-glucose units, is synthesized at the plasma membrane by the cellulose synthase complex (CSC) from bacteria to plants. The CSC is involved in biosynthesis of cellulose microfibrils containing 18 cellulose synthase (CesA) proteins. Macrofibrils can be formed with side by side arrangement of microfibrils. In addition, beside CesA, various proteins like the KORRIGAN, sucrose synthase, cytoskeletal components, and COBRA-like proteins have been involved in cellulose biosynthesis. Understanding the mechanisms of cellulose biosynthesis is of great importance not only for improving wood production in economically important forest trees to mankind but also for plant development. This review article covers the current knowledge about the cellulose biosynthesis-related gene family.
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Morgan JL, McNamara JT, Fischer M, Rich J, Chen HM, Withers SG, Zimmer J. Observing cellulose biosynthesis and membrane translocation in crystallo. Nature 2016; 531:329-34. [PMID: 26958837 PMCID: PMC4843519 DOI: 10.1038/nature16966] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 01/05/2016] [Indexed: 12/18/2022]
Abstract
Many biopolymers, including polysaccharides, must be translocated across at least one membrane to reach their site of biological function. Cellulose is a linear glucose polymer synthesized and secreted by a membrane-integrated cellulose synthase. Here, in crystallo enzymology with the catalytically active bacterial cellulose synthase BcsA-BcsB complex reveals structural snapshots of a complete cellulose biosynthesis cycle, from substrate binding to polymer translocation. Substrate- and product-bound structures of BcsA provide the basis for substrate recognition and demonstrate the stepwise elongation of cellulose. Furthermore, the structural snapshots show that BcsA translocates cellulose via a ratcheting mechanism involving a 'finger helix' that contacts the polymer's terminal glucose. Cooperating with BcsA's gating loop, the finger helix moves 'up' and 'down' in response to substrate binding and polymer elongation, respectively, thereby pushing the elongated polymer into BcsA's transmembrane channel. This mechanism is validated experimentally by tethering BcsA's finger helix, which inhibits polymer translocation but not elongation.
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Affiliation(s)
- Jacob L.W. Morgan
- University of Virginia School of Medicine, Center for Membrane Biology, Molecular Physiology and Biological Physics, 480 Ray C. Hunt Dr., Charlottesville, VA 22908, USA
| | - Joshua T. McNamara
- University of Virginia School of Medicine, Center for Membrane Biology, Molecular Physiology and Biological Physics, 480 Ray C. Hunt Dr., Charlottesville, VA 22908, USA
| | - Michael Fischer
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, B.C., Canada V6T 1Z1
| | - Jamie Rich
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, B.C., Canada V6T 1Z1
| | - Hong-Ming Chen
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, B.C., Canada V6T 1Z1
| | - Stephen G. Withers
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, B.C., Canada V6T 1Z1
| | - Jochen Zimmer
- University of Virginia School of Medicine, Center for Membrane Biology, Molecular Physiology and Biological Physics, 480 Ray C. Hunt Dr., Charlottesville, VA 22908, USA
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Bethke G, Thao A, Xiong G, Li B, Soltis NE, Hatsugai N, Hillmer RA, Katagiri F, Kliebenstein DJ, Pauly M, Glazebrook J. Pectin Biosynthesis Is Critical for Cell Wall Integrity and Immunity in Arabidopsis thaliana. THE PLANT CELL 2016; 28:537-56. [PMID: 26813622 PMCID: PMC4790862 DOI: 10.1105/tpc.15.00404] [Citation(s) in RCA: 104] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 12/11/2015] [Accepted: 01/19/2016] [Indexed: 05/19/2023]
Abstract
Plant cell walls are important barriers against microbial pathogens. Cell walls of Arabidopsis thaliana leaves contain three major types of polysaccharides: cellulose, various hemicelluloses, and pectins. UDP-D-galacturonic acid, the key building block of pectins, is produced from the precursor UDP-D-glucuronic acid by the action of glucuronate 4-epimerases (GAEs). Pseudomonas syringae pv maculicola ES4326 (Pma ES4326) repressed expression of GAE1 and GAE6 in Arabidopsis, and immunity to Pma ES4326 was compromised in gae6 and gae1 gae6 mutant plants. These plants had brittle leaves and cell walls of leaves had less galacturonic acid. Resistance to specific Botrytis cinerea isolates was also compromised in gae1 gae6 double mutant plants. Although oligogalacturonide (OG)-induced immune signaling was unaltered in gae1 gae6 mutant plants, immune signaling induced by a commercial pectinase, macerozyme, was reduced. Macerozyme treatment or infection with B. cinerea released less soluble uronic acid, likely reflecting fewer OGs, from gae1 gae6 cell walls than from wild-type Col-0. Although both OGs and macerozyme-induced immunity to B. cinerea in Col-0, only OGs also induced immunity in gae1 gae6. Pectin is thus an important contributor to plant immunity, and this is due at least in part to the induction of immune responses by soluble pectin, likely OGs, that are released during plant-pathogen interactions.
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Affiliation(s)
- Gerit Bethke
- Department of Plant Biology, University of Minnesota, St. Paul, Minnesota 55108
| | - Amanda Thao
- Department of Plant Biology, University of Minnesota, St. Paul, Minnesota 55108
| | - Guangyan Xiong
- Energy Biosciences Institute, University of California, Berkeley, California 94720
| | - Baohua Li
- Department of Plant Sciences, University of California, Davis, California 95616
| | - Nicole E Soltis
- Department of Plant Sciences, University of California, Davis, California 95616
| | - Noriyuki Hatsugai
- Department of Plant Biology, University of Minnesota, St. Paul, Minnesota 55108
| | - Rachel A Hillmer
- Department of Plant Biology, University of Minnesota, St. Paul, Minnesota 55108 Plant Biological Sciences Graduate Program, University of Minnesota, St. Paul, Minnesota 55108
| | - Fumiaki Katagiri
- Department of Plant Biology, University of Minnesota, St. Paul, Minnesota 55108
| | | | - Markus Pauly
- Energy Biosciences Institute, University of California, Berkeley, California 94720 Department of Plant and Microbial Biology, University of California, Berkeley, California, 94720
| | - Jane Glazebrook
- Department of Plant Biology, University of Minnesota, St. Paul, Minnesota 55108
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Rasheed S, Bashir K, Matsui A, Tanaka M, Seki M. Transcriptomic Analysis of Soil-Grown Arabidopsis thaliana Roots and Shoots in Response to a Drought Stress. FRONTIERS IN PLANT SCIENCE 2016; 7:180. [PMID: 26941754 PMCID: PMC4763085 DOI: 10.3389/fpls.2016.00180] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 02/02/2016] [Indexed: 05/04/2023]
Abstract
Drought stress has a negative impact on crop yield. Thus, understanding the molecular mechanisms responsible for plant drought stress tolerance is essential for improving this beneficial trait in crops. In the current study, a transcriptional analysis was conducted of gene regulatory networks in roots of soil-grown Arabidopsis plants in response to a drought stress treatment. A microarray analysis of drought-stressed roots and shoots was performed at 0, 1, 3, 5, 7, and 9 days. Results indicated that the expression of many drought stress-responsive genes and abscisic acid biosynthesis-related genes was differentially regulated in roots and shoots from days 3 to 9. The expression of cellular and metabolic process-related genes was up-regulated at an earlier time-point in roots than in shoots. In this regard, the expression of genes involved in oxidative signaling, chromatin structure, and cell wall modification also increased significantly in roots compared to shoots. Moreover, the increased expression of genes involved in the transport of amino acids and other solutes; including malate, iron, and sulfur, was observed in roots during the early time points following the initiation of the drought stress. These data suggest that plants may utilize these signaling channels and metabolic adjustments as adaptive responses in the early stages of a drought stress. Collectively, the results of the present study increases our understanding of the differences pertaining to the molecular mechanisms occurring in roots vs. shoots in response to a drought stress. Furthermore, these findings also aid in the selection of novel genes and promoters that can be used to potentially produce crop plants with increased drought tolerance.
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Affiliation(s)
- Sultana Rasheed
- Plant Genomic Network Research Team, RIKEN Center for Sustainable Resource SciencesYokohama, Japan
- Kihara Institute for Biological Research, Yokohama City UniversityYokohama, Japan
| | - Khurram Bashir
- Plant Genomic Network Research Team, RIKEN Center for Sustainable Resource SciencesYokohama, Japan
| | - Akihiro Matsui
- Plant Genomic Network Research Team, RIKEN Center for Sustainable Resource SciencesYokohama, Japan
| | - Maho Tanaka
- Plant Genomic Network Research Team, RIKEN Center for Sustainable Resource SciencesYokohama, Japan
| | - Motoaki Seki
- Plant Genomic Network Research Team, RIKEN Center for Sustainable Resource SciencesYokohama, Japan
- Kihara Institute for Biological Research, Yokohama City UniversityYokohama, Japan
- CREST, Japan Science and Technology AgencySaitama, Japan
- *Correspondence: Motoaki Seki
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Tateno M, Brabham C, DeBolt S. Cellulose biosynthesis inhibitors - a multifunctional toolbox. JOURNAL OF EXPERIMENTAL BOTANY 2016; 67:533-42. [PMID: 26590309 DOI: 10.1093/jxb/erv489] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In the current review, we examine the growing number of existing Cellulose Biosynthesis Inhibitors (CBIs) and based on those that have been studied with live cell imaging we group their mechanism of action. Attention is paid to the use of CBIs as tools to ask fundamental questions about cellulose biosynthesis.
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Affiliation(s)
| | | | - Seth DeBolt
- Department of Horticulture, University of Kentucky, 309 Plant Science Building, 1405 Veterans Drive, Lexington, KY 40546-0312, USA
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