ArticlePlant physiology2014
Arabidopsis myosin XI: a motor rules the tracks.
Article in Plant physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.
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Who cites it
35 citing papers in PubMed.
- Unconventional vesicle transport driven by formin-actin-myosin working system during pollen germination.Science advances · 2026Article
- The calmodulin-like proteins, CML13 and CML14 function as myosin light chains for the class XI myosins in Arabidopsis.Plant & cell physiology · 2026Article
- Agent-Based Computational Modeling of the Stochastic Dynamic Behavior of Actin Filaments Recapitulates the Homeostatic Cortical Array in Plant Epidermal Cells.Cytoskeleton (Hoboken, N.J.) · 2026Article
- Cytoskeletal control of development and environmental adaptation in plants.Science China. Life sciences · 2026Review
- Dynamics of full-length Arabidopsis myosin XI and its involvement in actin remodeling.Plant & cell physiology · 2025Article
- Heat-stable protein PGSL1 enhances pollen germination and tube growth at high temperature.Nature communications · 2025Article
- CHUP1 restricts chloroplast movement and effector-triggered immunity in epidermal cells.The New phytologist · 2024Article
- Cooperative actin filament nucleation by the Arp2/3 complex and formins maintains the homeostatic cortical array in Arabidopsis epidermal cells.The Plant cell · 2024Article
- Exploring the Role of the Plant Actin Cytoskeleton: From Signaling to Cellular Functions.International journal of molecular sciences · 2023Review
- The TOR complex controls ATP levels to regulate actin cytoskeleton dynamics inProceedings of the National Academy of Sciences of the United States of America · 2022Article
- Lipid Signaling Requires ROS Production to Elicit Actin Cytoskeleton Remodeling during Plant Innate Immunity.International journal of molecular sciences · 2022Article
- Myosin XI drives polarized growth by vesicle focusing and local enrichment of F-actin in Physcomitrium patens.Plant physiology · 2021Article
- ARP2/3-independent WAVE/SCAR pathway and class XI myosin control sperm nuclear migration in flowering plants.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
- Genetic suppression of defective profilin by attenuated Myosin II reveals a potential role for Myosin II in actin dynamics in vivo in fission yeast.Molecular biology of the cell · 2020Article
- A role for Arabidopsis myosins in sugar-induced hypocotyl elongation.microPublication biology · 2020Article
- Genome-Wide Identification and Comparative Analysis of Myosin Gene Family in Four Major Cotton Species.Genes · 2020Article
- Auxin-induced actin cytoskeleton rearrangements require AUX1.The New phytologist · 2020Article
- An Auxin Transport Inhibitor Targets Villin-Mediated Actin Dynamics to Regulate Polar Auxin Transport.Plant physiology · 2019Article
- The Balance between Actin-Bundling Factors Controls Actin Architecture in Pollen Tubes.iScience · 2019Article
- Myosins XI Are Involved in Exocytosis of Cellulose Synthase Complexes.Plant physiology · 2019Article
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Plant cell expansion relies on intracellular trafficking of vesicles and macromolecules, which requires myosin motors and a dynamic actin network. Arabidopsis (Arabidopsis thaliana) myosin XI powers the motility of diverse cellular organelles, including endoplasmic reticulum, Golgi, endomembrane vesicles, peroxisomes, and mitochondria. Several recent studies show that there are changes in actin organization and dynamics in myosin xi mutants, indicating that motors influence the molecular tracks they use for transport. However, the mechanism by which actin organization and dynamics are regulated by myosin XI awaits further detailed investigation. Here, using high spatiotemporal imaging of living cells, we quantitatively assessed the architecture and dynamic behavior of cortical actin arrays in a mutant with three Myosin XI (XI-1, XI-2, and XI-K) genes knocked out (xi3KO). In addition to apparent reduction of organ and cell size, the mutant showed less dense and more bundled actin filament arrays in epidermal cells. Furthermore, the overall actin dynamicity was significantly inhibited in the xi3KO mutant. Because cytoskeletal remodeling is contributed mainly by filament assembly/disassembly and translocation/buckling, we also examined the dynamic behavior of individual actin filaments. We found that the xi3KO mutant had significantly decreased actin turnover, with a 2-fold reduction in filament severing frequency. Moreover, quantitative analysis of filament shape change over time revealed that myosin XI generates the force for buckling and straightening of both single actin filaments and actin bundles. Thus, our data provide genetic evidence that three Arabidopsis class XI myosins contribute to actin remodeling by stimulating turnover and generating the force for filament shape change.
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