ArticlePlant physiology2010
Actin reorganization underlies phototropin-dependent positioning of nuclei in Arabidopsis leaf cells.
Article in Plant physiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.
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Who cites it
28 citing papers in PubMed, 58 citations in OpenAlex.
- Root hair initiation-dependent and -independent nuclear movements during root hair development inPlant signaling & behavior · 2026Article
- Multifactorial analysis of simultaneous organelle movement reveals cell-specific motility of peroxisomes and mitochondria.Plant physiology · 2026Article
- Exploring the Role of the Plant Actin Cytoskeleton: From Signaling to Cellular Functions.International journal of molecular sciences · 2023Review
- Division site determination during asymmetric cell division in plants.The Plant cell · 2022Review
- Arabidopsis thaliana myosin XIK is recruited to the Golgi through interaction with a MyoB receptor.Communications biology · 2021Article
- Epidermal chloroplasts are defense-related motile organelles equipped with plant immune components.Nature communications · 2021Article
- Importin-αs are required for the nuclear localization and function of the Plasmopara viticola effector PvAVH53.Horticulture research · 2021Article
- FMT, a protein that affects mitochondrial distribution, interacts with translation-related proteins in Arabidopsis thaliana.Plant cell reports · 2021Article
- Bundling up the Role of the Actin Cytoskeleton in Primary Root Growth.Frontiers in plant science · 2021Review
- Spatial chloroplast-to-nucleus signalling involving plastid-nuclear complexes and stromules.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2020Review
- ANGUSTIFOLIA Regulates Actin Filament Alignment for Nuclear Positioning in Leaves.Plant physiology · 2019Article
- Defense related decadienal elicits membrane lipid remodeling in the diatom Phaeodactylum tricornutum.PloS one · 2017Article
- Plant Nuclei Move to Escape Ultraviolet-Induced DNA Damage and Cell Death.Plant physiology · 2016Article
- Article
- PLASTID MOVEMENT IMPAIRED1 and PLASTID MOVEMENT IMPAIRED1-RELATED1 Mediate Photorelocation Movements of Both Chloroplasts and Nuclei.Plant physiology · 2015Article
- PCaP2 regulates nuclear positioning in growing Arabidopsis thaliana root hairs by modulating filamentous actin organization.Plant cell reports · 2015Article
- Moving and positioning the nucleus in skeletal muscle - one step at a time.Nucleus (Austin, Tex.) · 2015Review
- Mechanical detection of a long-range actin network emanating from a biomimetic cortex.Biophysical journal · 2014Article
- Actin-dependent plastid movement is required for motive force generation in directional nuclear movement in plants.Proceedings of the National Academy of Sciences of the United States of America · 2014Article
- Effector biology during biotrophic invasion of plant cells.Virulence · 2014Review
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In epidermal and mesophyll cells of Arabidopsis (Arabidopsis thaliana) leaves, nuclei become relocated in response to strong blue light. We previously reported that nuclear positions both in darkness and in strong blue light are regulated by the blue light receptor phototropin2 in mesophyll cells. Here, we investigate the involvement of phototropin and the actin cytoskeleton in nuclear positioning in epidermal cells. Analysis of geometrical parameters revealed that, in darkness, nuclei were distributed near the center of the cell, adjacent to the inner periclinal wall, independent of cell shape. Dividing the anticlinal wall into concave, convex, and intermediate regions indicated that, in strong blue light, nuclei became relocated preferably to a concave region of the anticlinal wall, nearest the center of the cell. Mutant analyses verified that light-dependent nuclear positioning was regulated by phototropin2, while dark positioning of nuclei was independent of phototropin. Nuclear movement was inhibited by an actin-depolymerizing reagent, latrunculin B, but not by a microtubule-disrupting reagent, propyzamide. Imaging actin organization by immunofluorescence microscopy revealed that thick actin bundles, periclinally arranged parallel to the longest axis of the epidermal cell, were associated with the nucleus in darkness, whereas under strong blue light, the actin bundles, especially in the vicinity of the nucleus, became arranged close to the anticlinal walls. Light-dependent changes in the actin organization were clear in phot1 mutant but not in phot2 and phot1phot2 mutants. We propose that, in Arabidopsis, blue-light-dependent nuclear positioning is regulated by phototropin2-dependent reorganization of the actin cytoskeleton.
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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.