Differential growth is an emergent property of mechanochemical feedback mechanisms in curved plant organs
(2024) In Developmental Cell 59(24). p.3-3258- Abstract
Differential growth is central to eukaryotic morphogenesis. We showed using cellular imaging, simulations, and perturbations that light-induced differential growth in a curved organ, the Arabidopsis thaliana apical hook, emerges from the longitudinal expansion of subepidermal cells, acting in parallel with a differential in the material properties of epidermal cell walls that resist expansion. The greater expansion of inner hook cells that results in apical hook opening is gated by wall alkalinity and auxin, both of which are depleted upon illumination. We further identified mechanochemical feedback from wall mechanics to light stimulated auxin depletion, which may contribute to gating hook opening under mechanical restraint. These... (More)
Differential growth is central to eukaryotic morphogenesis. We showed using cellular imaging, simulations, and perturbations that light-induced differential growth in a curved organ, the Arabidopsis thaliana apical hook, emerges from the longitudinal expansion of subepidermal cells, acting in parallel with a differential in the material properties of epidermal cell walls that resist expansion. The greater expansion of inner hook cells that results in apical hook opening is gated by wall alkalinity and auxin, both of which are depleted upon illumination. We further identified mechanochemical feedback from wall mechanics to light stimulated auxin depletion, which may contribute to gating hook opening under mechanical restraint. These results highlight how plant cells coordinate growth among tissue layers by linking mechanics and hormonal gradients with the cell wall remodeling required for differential growth.
(Less)
- author
- Walia, Ankit ; Carter, Ross ; Wightman, Raymond ; Meyerowitz, Elliot M. ; Jönsson, Henrik LU and Jones, Alexander M.
- organization
- publishing date
- 2024
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- auxin, cell wall remodeling, differential growth, hormones, mechanical forces, mechanochemical feedback, microtubule-cytoskeleton, multiscale modeling, plant morphogenesis, tissue stresses
- in
- Developmental Cell
- volume
- 59
- issue
- 24
- pages
- 3 - 3258
- publisher
- Cell Press
- external identifiers
-
- pmid:39378877
- scopus:85207802247
- ISSN
- 1534-5807
- DOI
- 10.1016/j.devcel.2024.09.021
- language
- English
- LU publication?
- yes
- id
- 7d13e964-65ba-48ee-a24d-cac268e49be3
- date added to LUP
- 2024-12-10 15:20:41
- date last changed
- 2025-07-09 08:26:59
@article{7d13e964-65ba-48ee-a24d-cac268e49be3,
abstract = {{<p>Differential growth is central to eukaryotic morphogenesis. We showed using cellular imaging, simulations, and perturbations that light-induced differential growth in a curved organ, the Arabidopsis thaliana apical hook, emerges from the longitudinal expansion of subepidermal cells, acting in parallel with a differential in the material properties of epidermal cell walls that resist expansion. The greater expansion of inner hook cells that results in apical hook opening is gated by wall alkalinity and auxin, both of which are depleted upon illumination. We further identified mechanochemical feedback from wall mechanics to light stimulated auxin depletion, which may contribute to gating hook opening under mechanical restraint. These results highlight how plant cells coordinate growth among tissue layers by linking mechanics and hormonal gradients with the cell wall remodeling required for differential growth.</p>}},
author = {{Walia, Ankit and Carter, Ross and Wightman, Raymond and Meyerowitz, Elliot M. and Jönsson, Henrik and Jones, Alexander M.}},
issn = {{1534-5807}},
keywords = {{auxin; cell wall remodeling; differential growth; hormones; mechanical forces; mechanochemical feedback; microtubule-cytoskeleton; multiscale modeling; plant morphogenesis; tissue stresses}},
language = {{eng}},
number = {{24}},
pages = {{3--3258}},
publisher = {{Cell Press}},
series = {{Developmental Cell}},
title = {{Differential growth is an emergent property of mechanochemical feedback mechanisms in curved plant organs}},
url = {{http://dx.doi.org/10.1016/j.devcel.2024.09.021}},
doi = {{10.1016/j.devcel.2024.09.021}},
volume = {{59}},
year = {{2024}},
}