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A biophysical model...
A biophysical model for plant cell plate maturation based on the contribution of a spreading force
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- Jawaid, Muhammad Zaki (author)
- Univ Calif Davis, Dept Phys & Astron, Davis, CA 95616 USA.
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- Sinclair, Rosalie (author)
- Univ Calif Davis, Dept Plant Sci, Davis, CA 95616 USA.
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- Bulone, Vincent (author)
- KTH,Glykovetenskap,Univ Adelaide, Sch Food Agr & Wine, Waite Campus, Adelaide, SA 5064, Australia.
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- Cox, Daniel L. (author)
- Univ Calif Davis, Dept Phys & Astron, Davis, CA 95616 USA.
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- Drakakaki, Georgia (author)
- Univ Calif Davis, Dept Plant Sci, Davis, CA 95616 USA.
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Univ Calif Davis, Dept Phys & Astron, Davis, CA 95616 USA Univ Calif Davis, Dept Plant Sci, Davis, CA 95616 USA. (creator_code:org_t)
- 2021-11-27
- 2022
- English.
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In: Plant Physiology. - : Oxford University Press (OUP). - 0032-0889 .- 1532-2548. ; 188:2, s. 795-806
- Related links:
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Abstract
Subject headings
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- The late-stage onset of an "areal" spreading and stabilizing force is essential for regular plant cell plate development and maturation. Plant cytokinesis, a fundamental process of plant life, involves de novo formation of a "cell plate" partitioning the cytoplasm of dividing cells. Cell plate formation is directed by orchestrated delivery, fusion of cytokinetic vesicles, and membrane maturation to form a nascent cell wall by timely deposition of polysaccharides. During cell plate maturation, the fragile membrane network transitions to a fenestrated sheet and finally a young cell wall. Here, we approximated cell plate sub-structures with testable shapes and adopted the Helfrich-free energy model for membranes, including a stabilizing and spreading force, to understand the transition from a vesicular network to a fenestrated sheet and mature cell plate. Regular cell plate development in the model was possible, with suitable bending modulus, for a two-dimensional late stage spreading force of 2-6 pN/nm, an osmotic pressure difference of 2-10 kPa, and spontaneous curvature between 0 and 0.04 nm(-1). With these conditions, stable membrane conformation sizes and morphologies emerged in concordance with stages of cell plate development. To reach a mature cell plate, our model required the late-stage onset of a spreading/stabilizing force coupled with a concurrent loss of spontaneous curvature. Absence of a spreading/stabilizing force predicts failure of maturation. The proposed model provides a framework to interrogate different players in late cytokinesis and potentially other membrane networks that undergo such transitions. Callose, is a polysaccharide that accumulates transiently during cell plate maturation. Callose-related observations were consistent with the proposed model's concept, suggesting that it is one of the factors involved in establishing the spreading force.
Subject headings
- NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
- NATURVETENSKAP -- Biologi -- Cellbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Cell Biology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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