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Mechanical Shielding in Plant Nuclei.
Curr Biol
June 2020
Institut de Biologie Moléculaire des Plantes, CNRS, Université de Strasbourg, Strasbourg 67084, France. Electronic address:
In animal single cells in culture, nuclear geometry and stiffness can be affected by mechanical cues, with important consequences for chromatin status and gene expression. This calls for additional investigation into the corresponding physiological relevance in a multicellular context and in different mechanical environments. Using the Arabidopsis root as a model system, and combining morphometry and micro-rheometry, we found that hyperosmotic stress decreases nuclear circularity and size and increases nuclear stiffness in meristematic cells.
View Article and Find Full Text PDFGIP/MZT1 proteins orchestrate nuclear shaping.
Front Plant Sci
June 2014
Institut de Biologie Moléculaire des Plantes, Centre National de la Recherche Scientifique, UPR 2357, Conventionné avec l'Université de Strasbourg Strasbourg, France.
The functional organization of the nuclear envelope (NE) is only just emerging in plants with the recent characterization of NE protein complexes and their molecular links to the actin cytoskeleton. The NE also plays a role in microtubule nucleation by recruiting γ-Tubulin Complexes (γ-TuCs) which contribute to the establishment of a robust mitotic spindle. γ-tubulin Complex Protein 3 (GCP3)-interacting proteins (GIPs) have been identified recently as integral components of γ-TuCs.
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