ArticlePlant physiology2015
Class XI Myosins Move Specific Organelles in Pollen Tubes and Are Required for Normal Fertility and Pollen Tube Growth in Arabidopsis.
Article in Plant physiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.
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Who cites it
36 citing papers in PubMed, 77 citations in OpenAlex.
- Recessive antimorph alleles reveal novel functions of the Opaque1 myosin XI in maize.Plant physiology · 2026Article
- 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
- 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
- Polarity sorting of actin filaments by motor-driven cargo transport.Biophysical journal · 2025Article
- Morphometric analysis of actin networks.Molecular biology of the cell · 2024Article
- Distinct functions of microtubules and actin filaments in the transportation of the male germ unit in pollen.Nature communications · 2024Article
- Myosin XI-mediated BIK1 recruitment to nanodomains facilitates FLS2-BIK1 complex formation during innate immunity inProceedings of the National Academy of Sciences of the United States of America · 2024Article
- Regulatory dynamics of gene expression in the developing male gametophyte of Arabidopsis.Plant reproduction · 2023Article
- Movement of Lipid Droplets in the Arabidopsis Pollen Tube Is Dependent on the Actomyosin System.Plants (Basel, Switzerland) · 2023Article
- The OPAQUE1/DISCORDIA2 myosin XI is required for phragmoplast guidance during asymmetric cell division in maize.The Plant cell · 2023Article
- Organization and dynamics of cross-linked actin filaments in confined environments.Biophysical journal · 2023Article
- Identification of myosin genes and their expression in response to biotic (PVY, PVX, PVS, and PVA) and abiotic (Drought, Heat, Cold, and High-light) stress conditions in potato.Molecular biology reports · 2022Article
- Genome sequencing and comparative analysis ofiScience · 2022Article
- A myosin XI adaptor, TAPE, is essential for pollen tube elongation in rice.Plant physiology · 2022Article
- Differential gene expression in tall fescue tissues in response to water deficit.The plant genome · 2022Article
- Biochemical and cytological interactions between callose synthase and microtubules in the tobacco pollen tube.Plant cell reports · 2022Article
- A glossary of plant cell structures: Current insights and future questions.The Plant cell · 2022Review
- Cell biology of primary cell wall synthesis in plants.The Plant cell · 2022Review
Corrections and comments
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Pollen tube growth is an essential aspect of plant reproduction because it is the mechanism through which nonmotile sperm cells are delivered to ovules, thus allowing fertilization to occur. A pollen tube is a single cell that only grows at the tip, and this tip growth has been shown to depend on actin filaments. It is generally assumed that myosin-driven movements along these actin filaments are required to sustain the high growth rates of pollen tubes. We tested this conjecture by examining seed set, pollen fitness, and pollen tube growth for knockout mutants of five of the six myosin XI genes expressed in pollen of Arabidopsis (Arabidopsis thaliana). Single mutants had little or no reduction in overall fertility, whereas double mutants of highly similar pollen myosins had greater defects in pollen tube growth. In particular, myo11c1 myo11c2 pollen tubes grew more slowly than wild-type pollen tubes, which resulted in reduced fitness compared with the wild type and a drastic reduction in seed set. Golgi stack and peroxisome movements were also significantly reduced, and actin filaments were less organized in myo11c1 myo11c2 pollen tubes. Interestingly, the movement of yellow fluorescent protein-RabA4d-labeled vesicles and their accumulation at pollen tube tips were not affected in the myo11c1 myo11c2 double mutant, demonstrating functional specialization among myosin isoforms. We conclude that class XI myosins are required for organelle motility, actin organization, and optimal growth of pollen tubes.
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