ArticleThe Plant cell2007
Tapetosomes in Brassica tapetum accumulate endoplasmic reticulum-derived flavonoids and alkanes for delivery to the pollen surface.
Article in The Plant cell, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 113 papers.
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Who cites it
113 citing papers in PubMed, 221 citations in OpenAlex.
- The SbTDR gene is required for anther development and male fertility in Sorghum bicolor.Plant reproduction · 2026Article
- Knockdown of Arabidopsis RUS4 impacts pollen coat formation by affecting flavonoid and lipid metabolism.Planta · 2026Article
- CLE19 suppresses brassinosteroid signaling output via the BSL-BIN2 module to maintain BES1 activity and pollen exine patterning in Arabidopsis.Journal of integrative plant biology · 2025Article
- UV-B Responsive Flavonoid Synthesis Contributes to Tartary Buckwheat High-Altitude Adaption.Plant biotechnology journal · 2025Article
- A single-cell, spatial transcriptomic atlas of the Arabidopsis life cycle.Nature plants · 2025Article
- Insights into the Molecular Basis of Pollen Coat Development and Its Role in Male Sterility.International journal of molecular sciences · 2025Review
- The first intron and promoter of Arabidopsis DIACYLGLYCEROL ACYLTRANSFERASE 1 exert synergistic effects on pollen and embryo lipid accumulation.The New phytologist · 2025Article
- AtHMGB15 regulates tapetal apoptosis in pollen development and actin dynamics during pollen germination in arabidopsis.Plant reproduction · 2024Article
- Analysis ofInternational journal of molecular sciences · 2024Article
- Histochemical and ultrastructural analysis of tapetum and sporoderm development in relation to precocious pollenkitt production of Garcinia dulcis (Roxb.) Kurz.Protoplasma · 2024Article
- OsSNDP4, a Sec14-nodulin Domain Protein, is Required for Pollen Development in Rice.Rice (New York, N.Y.) · 2024Article
- The transcription factors and pathways underpinning male reproductive development in Arabidopsis.Frontiers in plant science · 2024Review
- Dose effects of restorer gene modulate pollen fertility in cotton CMS-D2 restorer lines via auxin signaling and flavonoid biosynthesis.Plant cell reports · 2023Article
- PXL1 and SERKs act as receptor-coreceptor complexes for the CLE19 peptide to regulate pollen development.Nature communications · 2023Article
- Biosynthesis and transport of pollen coat precursors in angiosperms.Nature plants · 2023Review
- Review on tapetal ultrastructure in angiosperms.Planta · 2023Review
- Dynamic Regulation of Lipid Droplet Biogenesis in Plant Cells and Proteins Involved in the Process.International journal of molecular sciences · 2023Review
- Flavonols modulate plant development, signaling, and stress responses.Current opinion in plant biology · 2023Review
- Characterization of Oil Body and Starch Granule Dynamics in Developing Seeds ofInternational journal of molecular sciences · 2023Article
- Multi-omics research on common allergens during the ripening of pollen and poplar flocs ofFrontiers in plant science · 2023Article
53 more citing papers are in PubMed but not listed here.
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Authors and funding
2 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Tapetosomes are abundant organelles in tapetum cells during the active stage of pollen maturation in Brassicaceae species. They possess endoplasmic reticulum (ER)-derived vesicles and oleosin-coated lipid droplets, but their overall composition and function have not been established. In situ localization analyses of developing Brassica napus anthers revealed flavonoids present exclusively in tapetum cells, first in an ER network along with flavonoid-3'-hydroxylase and then in ER-derived tapetosomes. Flavonoids were absent in the cytosol, elaioplasts, vacuoles, and nuclei. Subcellular fractionation of developing anthers localized both flavonoids and alkanes in tapetosomes. Subtapetosome fractionation localized flavonoids in ER-derived vesicles, and alkanes and oleosins in lipid droplets. After tapetum cell death, flavonoids, alkanes, and oleosins were located on mature pollen. In the Arabidopsis thaliana mutants tt12 and tt19 devoid of a flavonoid transporter, flavonoids were present in the cytosol in reduced amounts but absent in tapetosomes and were subsequently located on mature pollen. tt4, tt12, and tt19 pollen was more susceptible than wild-type pollen to UV-B irradiation on subsequent germination. Thus, tapetosomes accumulate ER-derived flavonoids, alkanes, and oleosins for discharge to the pollen surface upon cell death. This tapetosome-originated pollen coat protects the haploidic pollen from UV light damage and water loss and aids water uptake.
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