ArticlePlant physiology2015
Highly Branched Xylan Made by IRREGULAR XYLEM14 and MUCILAGE-RELATED21 Links Mucilage to Arabidopsis Seeds.
Article in Plant physiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.
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Who cites it
56 citing papers in PubMed, 83 citations in OpenAlex.
- GT61 β-1,2-xylosyltransferases define a conserved xylan modification in gymnosperm and Arabidopsis primary cell walls.The Plant journal : for cell and molecular biology · 2025Article
- Cell wall-related glycosyltransferases and wall architecture in the model liverwort Marchantia polymorpha.The Plant journal : for cell and molecular biology · 2025Article
- Mucilicious methods: Navigating the tools developed to Arabidopsis Seed Coat Mucilage analysis.Cell surface (Amsterdam, Netherlands) · 2025Review
- Characterization of Indian waxy and non-waxy maize germplasm for genetic differentiation through SNP genotyping.Molecular genetics and genomics : MGG · 2025Article
- A Fresh Look at Celery Collenchyma and Parenchyma Cell Walls Through a Combination of Biochemical, Histochemical, and Transcriptomic Analyses.International journal of molecular sciences · 2025Article
- Convergent Emergence of Glucomannan β-Galactosyltransferase Activity in Asterids and Rosids.Plant & cell physiology · 2024Article
- Article
- Mucilage extracted from Chilean papaya seeds is enriched with homogalacturonan domains.Frontiers in plant science · 2024Article
- Highly differentiated genomic properties underpin the different cell walls of Poaceae and eudicots.Plant physiology · 2023Article
- Branched mannan and xyloglucan as a dynamic duo in plant cell walls.Cell surface (Amsterdam, Netherlands) · 2023Review
- Biochemical data documenting variations in mucilage polysaccharides in a range of glycosyltransferase mutants.Scientific data · 2023Article
- Article
- The Genetic Control of SEEDSTICK and LEUNIG-HOMOLOG in Seed and Fruit Development: New Insights into Cell Wall Control.Plants (Basel, Switzerland) · 2022Article
- Rhamnogalacturonan-I forms mucilage: behind its simplicity, a cutting-edge organization.Journal of experimental botany · 2022Article
- β-1,4-Xylan backbone synthesis in higher plants: How complex can it be?Frontiers in plant science · 2022Article
- Functional analysis of GT61 glycosyltransferases from grass species in xylan substitutions.Planta · 2021Article
- Sterol Glucosyltransferases Tailor Polysaccharide Accumulation in Arabidopsis Seed Coat Epidermal Cells.Cells · 2021Article
- The Modification of Plant Cell Wall Polysaccharides in Potato Plants duringPlants (Basel, Switzerland) · 2021Article
- Two β-glucuronosyltransferases involved in the biosynthesis of type II arabinogalactans function in mucilage polysaccharide matrix organization in Arabidopsis thaliana.BMC plant biology · 2021Article
- Transport of UDP-rhamnose by URGT2, URGT4, and URGT6 modulates rhamnogalacturonan-I length.Plant physiology · 2021Article
Corrections and comments
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
All cells of terrestrial plants are fortified by walls composed of crystalline cellulose microfibrils and a variety of matrix polymers. Xylans are the second most abundant type of polysaccharides on Earth. Previous studies of Arabidopsis (Arabidopsis thaliana) irregular xylem (irx) mutants, with collapsed xylem vessels and dwarfed stature, highlighted the importance of this cell wall component and revealed multiple players required for its synthesis. Nevertheless, xylan elongation and substitution are complex processes that remain poorly understood. Recently, seed coat epidermal cells were shown to provide an excellent system for deciphering hemicellulose production. Using a coexpression and sequence-based strategy, we predicted several MUCILAGE-RELATED (MUCI) genes that encode glycosyltransferases (GTs) involved in the production of xylan. We now show that MUCI21, a member of an uncharacterized clade of the GT61 family, and IRX14 (GT43 protein) are essential for the synthesis of highly branched xylan in seed coat epidermal cells. Our results reveal that xylan is the most abundant xylose-rich component in Arabidopsis seed mucilage and is required to maintain its architecture. Characterization of muci21 and irx14 single and double mutants indicates that MUCI21 is a Golgi-localized protein that likely facilitates the addition of xylose residues directly to the xylan backbone. These unique branches seem to be necessary for pectin attachment to the seed surface, while the xylan backbone maintains cellulose distribution. Evaluation of muci21 and irx14 alongside mutants that disrupt other wall components suggests that mucilage adherence is maintained by complex interactions between several polymers: cellulose, xylans, pectins, and glycoproteins.
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