Journal
DEVELOPMENTAL CELL
Volume 43, Issue 3, Pages 290-+Publisher
CELL PRESS
DOI: 10.1016/j.devcel.2017.10.017
Keywords
-
Categories
Funding
- Vetenskapsradet (Verket for Innovationssystem)
- Vinnova (Verket for Innovationssystem)
- Knut och Alice Wallenbergs Stiftelse via Shapesystem'' grant [2012.0050]
- Kempestiftelserna [SMK-1441]
- Gatsby Charitable Foundation [GAT3395/PR4]
- Swedish Research Council [VR2013-2343, VR2013-4632]
- European Research Council ERC grant [615739]
- European Research Council (ERC) [615739] Funding Source: European Research Council (ERC)
Ask authors/readers for more resources
The epidermis of aerial plant organs is thought to be limiting for growth, because it acts as a continuous load-bearing layer, resisting tension. Leaf epidermis contains jigsaw puzzle piece-shaped pavement cells whose shape has been proposed to be a result of subcellular variations in expansion rate that induce local buckling events. Paradoxically, such local compressive buckling should not occur given the tensile stresses across the epidermis. Using computational modeling, we show that the simplest scenario to explain pavement cell shapes within an epidermis under tension must involve mechanical wall heterogeneities across and along the anticlinal pavement cell walls between adjacent cells. Combining genetics, atomic force microscopy, and immunolabeling, we demonstrate that contiguous cell walls indeed exhibit hybrid mechanochemical properties. Such biochemical wall heterogeneities precede wall bending. Altogether, this provides a possible mechanism for the generation of complex plant cell shapes.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available