ArticleJournal of experimental botany2016
Arabidopsis FIM5 decorates apical actin filaments and regulates their organization in the pollen tube.
Article in Journal of experimental botany, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.
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Who cites it
23 citing papers in PubMed, 1 synthesis or guideline pooled it, 45 citations in OpenAlex.
- A multiscale growth atlas of Arabidopsis: linking cell dynamics to organ development.The New phytologist · 2026Pooled it
- FIMBRIN2 Regulates ABA-Induced Stomatal Closure by Promoting Microfilament Bundling and Turnover in Arabidopsis Guard Cells.Plant direct · 2026Article
- Cytoskeletal control of development and environmental adaptation in plants.Science China. Life sciences · 2026Review
- Visualizing Pollen and Pollen Tube Development Using Fluorescence Microscopy.Methods in molecular biology (Clifton, N.J.) · 2026Article
- Heat-stable protein PGSL1 enhances pollen germination and tube growth at high temperature.Nature communications · 2025Article
- Synergism of vesicle trafficking and cytoskeleton during regulation of plant growth and development: A mechanistic outlook.Heliyon · 2023Review
- Exploring the Role of the Plant Actin Cytoskeleton: From Signaling to Cellular Functions.International journal of molecular sciences · 2023Review
- VPS18-regulated vesicle trafficking controls the secretion of pectin and its modifying enzyme during pollen tube growth in Arabidopsis.The Plant cell · 2021Article
- The quest for the central players governing pollen tube growth and guidance.Plant physiology · 2021Review
- Exocytosis and endocytosis: coordinating and fine-tuning the polar tip growth domain in pollen tubes.Journal of experimental botany · 2020Review
- Magnaporthe oryzae fimbrin organizes actin networks in the hyphal tip during polar growth and pathogenesis.PLoS pathogens · 2020Article
- Visualization of Actin Organization and Quantification in FixedBio-protocol · 2020Article
- Control of the Actin Cytoskeleton Within Apical and Subapical Regions of Pollen Tubes.Frontiers in cell and developmental biology · 2020Review
- Spatiotemporal cytoskeleton organizations determine morphogenesis of multicellular trichomes in tomato.PLoS genetics · 2019Article
- The Balance between Actin-Bundling Factors Controls Actin Architecture in Pollen Tubes.iScience · 2019Article
- Actin Bundles in The Pollen Tube.International journal of molecular sciences · 2018Review
- Arabidopsis class I formins control membrane-originated actin polymerization at pollen tube tips.PLoS genetics · 2018Article
- Rice Morphology Determinant-Mediated Actin Filament Organization Contributes to Pollen Tube Growth.Plant physiology · 2018Article
- The Actin Cytoskeleton: Functional Arrays for Cytoplasmic Organization and Cell Shape Control.Plant physiology · 2018Review
- Arabidopsis FIM4 and FIM5 regulates the growth of root hairs in an auxin-insensitive way.Plant signaling & behavior · 2018Article
Corrections and comments
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The actin cytoskeleton is increasingly recognized as a major regulator of pollen tube growth. Actin filaments have distinct distribution patterns and dynamic properties within different regions of the pollen tube. Apical actin filaments are highly dynamic and crucial for pollen tube growth. However, how apical actin filaments are generated and properly constructed remains an open question. Here we showed that Arabidopsis fimbrin5 (FIM5) decorates filamentous structures throughout the entire tube but is apically concentrated. Apical actin structures are disorganized to different degrees in the pollen tubes of fim5 loss-of-function mutants. Further observations suggest that apical actin structures are not constructed properly because apical actin filaments cannot be maintained at the cortex of fim5 pollen tubes. Actin filaments appeared to be more curved in fim5 pollen tubes and this was confirmed by measurements showing that the convolutedness and the rate of change of convolutedness of actin filaments was significantly increased in fim5 pollen tubes. This suggests that the rigidity of the actin filaments may be compromised in fim5 pollen tubes. Further, the apical cell wall composition is altered, implying that tip-directed vesicle trafficking events are impaired in fim5 pollen tubes. Thus, we found that FIM5 decorates apical actin filaments and regulates their organization in order to drive polarized pollen tube growth.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.