ArticlePlant physiology2009
Mutations in UDP-Glucose:sterol glucosyltransferase in Arabidopsis cause transparent testa phenotype and suberization defect in seeds.
Article in Plant physiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers.
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Who cites it
69 citing papers in PubMed, 148 citations in OpenAlex.
- Article
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- Transcriptome and metabolome reveal the accumulation of secondary metabolites in different species of Dioscorea.BMC plant biology · 2025Article
- Sterols in plant biologyCell surface (Amsterdam, Netherlands) · 2025Review
- Down-regulation of tomato STEROL GLYCOSYLTRANSFERASE 1 perturbs plant development and facilitates viroid infection.Journal of experimental botany · 2023Article
- Lipid modulation contributes to heat stress adaptation in peanut.Frontiers in plant science · 2023Article
- ARF2 positively regulates flavonols and proanthocyanidins biosynthesis in Arabidopsis thaliana.Planta · 2022Article
- Overexpression of WssgtL3.1 gene from Withania somnifera confers salt stress tolerance in Arabidopsis.Plant cell reports · 2021Article
- Sterol Glucosyltransferases Tailor Polysaccharide Accumulation in Arabidopsis Seed Coat Epidermal Cells.Cells · 2021Article
- Genome-wide identification, phylogeny, and expression analysis of the bHLH gene family in tobacco (Physiology and molecular biology of plants : an international journal of functional plant biology · 2021Article
- Genetic Mapping and Identification of the Candidate Gene for White Seed Coat inInternational journal of molecular sciences · 2021Article
- A Pipeline towards the Biochemical Characterization of theInternational journal of molecular sciences · 2021Article
- Identification of tannic cell walls at the outer surface of the endosperm upon Arabidopsis seed coat rupture.The Plant journal : for cell and molecular biology · 2020Article
- Leaf Lipid Alterations in Response to Heat Stress ofPlants (Basel, Switzerland) · 2020Article
- Seed-specific down-regulation of Arabidopsis CELLULOSE SYNTHASE 1 or 9 reduces seed cellulose content and differentially affects carbon partitioning.Plant cell reports · 2020Article
- Seed and floret size parameters of sunflower are determined by partially overlapping sets of quantitative trait loci with epistatic interactions.Molecular genetics and genomics : MGG · 2020Article
- MYB41, MYB107, and MYC2 promote ABA-mediated primary fatty alcohol accumulation via activation ofHorticulture research · 2020Article
- ABF2 and MYB transcription factors regulate feruloyl transferase FHT involved in ABA-mediated wound suberization of kiwifruit.Journal of experimental botany · 2020Article
- Candidate Domestication-Related Genes Revealed by Expression Quantitative Trait Loci Mapping of Narrow-Leafed Lupin (International journal of molecular sciences · 2019Article
9 more citing papers are in PubMed but not listed here.
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Authors and funding
15 authors at 8 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In higher plants, the most abundant sterol derivatives are steryl glycosides (SGs) and acyl SGs. Arabidopsis (Arabidopsis thaliana) contains two genes, UGT80A2 and UGT80B1, that encode UDP-Glc:sterol glycosyltransferases, enzymes that catalyze the synthesis of SGs. Lines having mutations in UGT80A2, UGT80B1, or both UGT80A2 and UGT8B1 were identified and characterized. The ugt80A2 lines were viable and exhibited relatively minor effects on plant growth. Conversely, ugt80B1 mutants displayed an array of phenotypes that were pronounced in the embryo and seed. Most notable was the finding that ugt80B1 was allelic to transparent testa15 and displayed a transparent testa phenotype and a reduction in seed size. In addition to the role of UGT80B1 in the deposition of flavanoids, a loss of suberization of the seed was apparent in ugt80B1 by the lack of autofluorescence at the hilum region. Moreover, in ugt80B1, scanning and transmission electron microscopy reveals that the outer integument of the seed coat lost the electron-dense cuticle layer at its surface and displayed altered cell morphology. Gas chromatography coupled with mass spectrometry of lipid polyester monomers confirmed a drastic decrease in aliphatic suberin and cutin-like polymers that was associated with an inability to limit tetrazolium salt uptake. The findings suggest a membrane function for SGs and acyl SGs in trafficking of lipid polyester precursors. An ancillary observation was that cellulose biosynthesis was unaffected in the double mutant, inconsistent with a predicted role for SGs in priming cellulose synthesis.
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