ArticleThe Plant cell2022
AP1/2β-mediated exocytosis of tapetum-specific transporters is required for pollen development in Arabidopsis thaliana.
Article in The Plant cell, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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Who cites it
20 citing papers in PubMed, 27 citations in OpenAlex.
- The role of clathrin in post-Golgi secretion in plant cells.The New phytologist · 2026Article
- Arabidopsis ECHIDNA Plays an Important Role in Auxin Regulation of Clathrin-Mediated Trafficking During Root Gravitropism.Plant, cell & environment · 2026Article
- Construction of high-density genetic map and QTL mapping of flowering traits in Perilla frutescens.BMC plant biology · 2026Article
- Clathrin-mediated endocytosis of ERECTA family receptors is essential for proper stomatal development inProceedings of the National Academy of Sciences of the United States of America · 2026Article
- Post-Golgi Trafficking in Plant Cells.Sub-cellular biochemistry · 2026Review
- Identification of an adaptor protein 2σ gene for OsTGW12 to determine grain weight and potentiate quality breeding in rice.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Article
- The green ESCRTs: Newly defined roles for ESCRT proteins in plants.The Journal of biological chemistry · 2025Review
- Clathrin-mediated trafficking regulates copper tolerance by modulating the localization of HEAVY METAL ATPase 5 in Arabidopsis root cells.Plant physiology · 2025Article
- The polar-localized borate exporter BOR1 facilitates boron transport in tapetal cells to the developing pollen grains.Plant physiology · 2025Article
- Identity Transitions of Tapetum Phases: Insights into Vesicular Dynamics and in Mortem Support During Pollen Maturation.Plants (Basel, Switzerland) · 2025Review
- Genome-wide identification of the adaptor protein complexes and its expression patterns analysis in foxtail millet (Setaria italica L.).BMC plant biology · 2025Article
- The clues offered by SNAREs on the vacuoles of plants and animals.Frontiers in plant science · 2025Review
- Endosomal membrane budding patterns in plants.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Article
- Potential candidate genes and pathways related to cytoplasmic male sterility in Dianthus spiculifolius as revealed by transcriptome analysis.Plant cell reports · 2023Article
- FgAP1Journal of fungi (Basel, Switzerland) · 2023Article
- Review
- Identifying pathogenicity-related genes in the pathogenFrontiers in microbiology · 2023Article
- Delivery service: β adaptins mediate exine formation in pollen grains.The Plant cell · 2022Article
- ATP-Binding Cassette G Transporters and Their Multiple Roles Especially for Male Fertility inInternational journal of molecular sciences · 2022Review
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Authors and funding
8 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
AP-1 and AP-2 adaptor protein (AP) complexes mediate clathrin-dependent trafficking at the trans-Golgi network (TGN) and the plasma membrane, respectively. Whereas AP-1 is required for trafficking to plasma membrane and vacuoles, AP-2 mediates endocytosis. These AP complexes consist of four subunits (adaptins): two large subunits (β1 and γ for AP-1 and β2 and α for AP-2), a medium subunit μ, and a small subunit σ. In general, adaptins are unique to each AP complex, with the exception of β subunits that are shared by AP-1 and AP-2 in some invertebrates. Here, we show that the two putative Arabidopsis thaliana AP1/2β adaptins co-assemble with both AP-1 and AP-2 subunits and regulate exocytosis and endocytosis in root cells, consistent with their dual localization at the TGN and plasma membrane. Deletion of both β adaptins is lethal in plants. We identified a critical role of β adaptins in pollen wall formation and reproduction, involving the regulation of membrane trafficking in the tapetum and pollen germination. In tapetal cells, β adaptins localize almost exclusively to the TGN and mediate exocytosis of the plasma membrane transporters such as ATP-binding cassette (ABC)G9 and ABCG16. This study highlights the essential role of AP1/2β adaptins in plants and their specialized roles in specific cell types.
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