ArticleJournal of experimental botany2018
The Arabidopsis COPII components, AtSEC23A and AtSEC23D, are essential for pollen wall development and exine patterning.
Article in Journal of experimental botany, 2018. 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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20 citing papers in PubMed.
- SIB1-SEC23A undergo ER to chloroplast relocalization to mediate immunity in Arabidopsis thaliana.Journal of integrative plant biology · 2026Article
- Interaction with COPII Member SAR1 Is Critical for the Delivery ofPlants (Basel, Switzerland) · 2026Article
- Insights into the Molecular Basis of Pollen Coat Development and Its Role in Male Sterility.International journal of molecular sciences · 2025Review
- The TRAPPC8/TRS85 subunit of the Arabidopsis TRAPPIII tethering complex regulates endoplasmic reticulum function and autophagy.Plant physiology · 2025Article
- Arabidopsis KNS3 and its two homologs mediate endoplasmic reticulum-to-plasma membrane traffic of boric acid channels.Journal of experimental botany · 2024Article
- Arabidopsis Sar1b is critical for pollen tube growth.Plant molecular biology · 2024Article
- Physiological responses to drought stress of three pine species and comparative transcriptome analysis of Pinus yunnanensis var. pygmaea.BMC genomics · 2024Article
- An Overview of Protein Secretion in Plant Cells.Methods in molecular biology (Clifton, N.J.) · 2024Review
- Article
- A CYP78As-small grain4-coat protein complex Ⅱ pathway promotes grain size in rice.The Plant cell · 2023Article
- Proteomic profile of the germinating seeds reveals enhanced seedling growth in Arabidopsis rpp1a mutant.Plant molecular biology · 2023Article
- Biosynthesis and transport of pollen coat precursors in angiosperms.Nature plants · 2023Review
- Article
- Review
- Cold Stress Response Mechanisms in Anther Development.International journal of molecular sciences · 2022Review
- AP1/2β-mediated exocytosis of tapetum-specific transporters is required for pollen development in Arabidopsis thaliana.The Plant cell · 2022Article
- Critical Determinants in ER-Golgi Trafficking of Enzymes Involved in Glycosylation.Plants (Basel, Switzerland) · 2022Review
- NERD1 is required for primexine formation and plasma membrane undulation during microsporogenesis inaBIOTECH · 2020Article
- COPII Components Sar1b and Sar1c Play Distinct Yet Interchangeable Roles in Pollen Development.Plant physiology · 2020Article
- The temporal regulation of TEK contributes to pollen wall exine patterning.PLoS genetics · 2020Article
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Authors and funding
5 authors.
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No grant is acknowledged in the PubMed record.
Abstract
The specialized multilayered pollen wall plays multiple roles to ensure normal microspore development. The major components of the pollen wall (e.g. sporopollenin and lipidic precursors) are provided from the tapetum. Material export from the endoplasmic reticulum (ER) is mediated by coat protein complex II (COPII) vesicles. The Arabidopsis thaliana genome encodes seven homologs of SEC23, a COPII component. However, the functional importance of this diversity remains elusive. Here, we analyzed knockout and knockdown lines for AtSEC23A and AtSEC23D, two of the A. thaliana SEC23 homologs, respectively. Single atsec23a and atsec23d mutant plants, despite normal fertility, showed an impaired exine pattern. Double atsec23ad mutant plants were semi-sterile and exhibited developmental defects in pollen and tapetal cells. Pollen grains of atsec23ad had defective exine and intine, and showed signs of cell degeneration. Moreover, the development of tapetal cells was altered, with structural abnormalities in organelles. AtSEC23A and AtSEC23D exhibited the characteristic localization pattern of COPII proteins and were highly expressed in the tapetum. Our work suggests that AtSEC23A and AtSEC23D may organize pollen wall development and exine patterning by regulating ER export of lipids and proteins necessary for pollen wall formation. Also, our results shed light on the functional heterogeneity of SEC23 homologs.
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