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A biophysical model...
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Jawaid, Muhammad ZakiUniv Calif Davis, Dept Phys & Astron, Davis, CA 95616 USA.
(författare)
A biophysical model for plant cell plate maturation based on the contribution of a spreading force
- Artikel/kapitelEngelska2022
Förlag, utgivningsår, omfång ...
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2021-11-27
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Oxford University Press (OUP),2022
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:kth-310597
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-310597URI
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https://doi.org/10.1093/plphys/kiab552DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
Anmärkningar
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QC 20220405
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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.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Sinclair, RosalieUniv Calif Davis, Dept Plant Sci, Davis, CA 95616 USA.
(författare)
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Bulone, VincentKTH,Glykovetenskap,Univ Adelaide, Sch Food Agr & Wine, Waite Campus, Adelaide, SA 5064, Australia.(Swepub:kth)u13o1auq
(författare)
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Cox, Daniel L.Univ Calif Davis, Dept Phys & Astron, Davis, CA 95616 USA.
(författare)
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Drakakaki, GeorgiaUniv Calif Davis, Dept Plant Sci, Davis, CA 95616 USA.
(författare)
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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)
Sammanhörande titlar
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Ingår i:Plant Physiology: Oxford University Press (OUP)188:2, s. 795-8060032-08891532-2548
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