ArticlePlant physiology2021
Transport of UDP-rhamnose by URGT2, URGT4, and URGT6 modulates rhamnogalacturonan-I length.
Article in Plant physiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 20 citations in OpenAlex.
- Key genes and molecular mechanisms responsible for male sterility revealed by transcriptome analysis in cotton.Plant cell reports · 2025Article
- Mucilicious methods: Navigating the tools developed to Arabidopsis Seed Coat Mucilage analysis.Cell surface (Amsterdam, Netherlands) · 2025Review
- Gibberellin signaling regulates pectin biosynthesis in Arabidopsis.Nature communications · 2025Article
- Kallfu and Wenutram: two Chilean flaxseed varieties with contrasting mucilage production, composition, and structure.Frontiers in plant science · 2025Article
- Mucilage extracted from Chilean papaya seeds is enriched with homogalacturonan domains.Frontiers in plant science · 2024Article
- Biochemical data documenting variations in mucilage polysaccharides in a range of glycosyltransferase mutants.Scientific data · 2023Article
- Rhamnogalacturonan-I forms mucilage: behind its simplicity, a cutting-edge organization.Journal of experimental botany · 2022Article
- Pre-Anthesis Cytokinin Applications Increase Table Grape Berry Firmness by Modulating Cell Wall Polysaccharides.Plants (Basel, Switzerland) · 2021Article
- Sterol Glucosyltransferases Tailor Polysaccharide Accumulation in Arabidopsis Seed Coat Epidermal Cells.Cells · 2021Article
- Players in pectin production: rhamnose transporters affect the length of rhamnogalacturonan-I.Plant physiology · 2021Article
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11 authors at 3 institutions in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
Rhamnogalacturonan-I biosynthesis occurs in the lumen of the Golgi apparatus, a compartment where UDP-Rhamnose and UDP-Galacturonic Acid are the main substrates for synthesis of the backbone polymer of pectin. Recent studies showed that UDP-Rha is transported from the cytosol into the Golgi apparatus by a family of six UDP-rhamnose/UDP-galactose transporters (URGT1-6). In this study, analysis of adherent and soluble mucilage (SM) of Arabidopsis thaliana seeds revealed distinct roles of URGT2, URGT4, and URGT6 in mucilage biosynthesis. Characterization of SM polymer size showed shorter chains in the urgt2 urgt4 and urgt2 urgt4 urgt6 mutants, suggesting that URGT2 and URGT4 are mainly involved in Rhamnogalacturonan-I (RG-I) elongation. Meanwhile, mutants in urgt6 exhibited changes only in adherent mucilage (AM). Surprisingly, the estimated number of RG-I polymer chains present in urgt2 urgt4 and urgt2 urgt4 urgt6 mutants was higher than in wild-type. Interestingly, the increased number of shorter RG-I chains was accompanied by an increased amount of xylan. In the urgt mutants, expression analysis of other genes involved in mucilage biosynthesis showed some compensation. Studies of mutants of transcription factors regulating mucilage formation indicated that URGT2, URGT4, and URGT6 are likely part of a gene network controlled by these regulators and involved in RG-I synthesis. These results suggest that URGT2, URGT4, and URGT6 play different roles in the biosynthesis of mucilage, and the lack of all three affects the production of shorter RG-I polymers and longer xylan domains.
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