Mechano-chemical regulation of complex cell shape formation: Epidermal pavement cells—A case study

Quantitative Plant Biology, Journal Year: 2023, Volume and Issue: 4

Published: Jan. 1, 2023

Abstract All plant cells are encased by walls, which provide structural support and control their morphology. How regulate the deposition of wall to generate complex shapes is a topic ongoing research. Scientists have identified several model systems, epidermal pavement cotyledons leaves being an ideal platform study formation cell shapes. These indeed grow alternating protrusions indentations resulting in jigsaw puzzle why these adopt such has shown be challenging problem solve, notably because it involves integration molecular mechanical regulation together with cytoskeletal dynamics modifications. In this review, we highlight some recent progress focusing on how processes may integrated at cellular level along quantitative morphometric approaches.

Language: Английский

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RHO GTPase of plants regulates polarized cell growth and cell division orientation during morphogenesis

Current Biology, Journal Year: 2023, Volume and Issue: 33(14), P. 2897 - 2911.e6

Published: June 28, 2023

Cell polarity-broadly defined as the asymmetric distribution of cellular activities and subcellular components within a cell-determines geometry cell growth division during development. RHO GTPase proteins regulate establishment polarity are conserved among eukaryotes. plant (ROP) subgroup GTPases that required for morphogenesis in plants. However, how ROP modulate tissues organs is not well understood. To investigate function tissue development organogenesis, we characterized single-copy gene liverwort Marchantia polymorpha (MpROP). M. develops morphologically complex three-dimensional exemplified by air chambers gemmae, respectively. Mprop loss-of-function mutants form defective indicating organogenesis. During chamber gemma wild type, MpROP protein enriched to sites polarized at surface accumulates expanding plate dividing cells. Consistent with these observations, lost divisions misoriented mutants. We propose regulates both orientation coordinated manner orchestrate organogenesis land

Language: Английский

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Growth and tension in explosive fruit

Current Biology, Journal Year: 2024, Volume and Issue: 34(5), P. 1010 - 1022.e4

Published: Feb. 14, 2024

Exploding seed pods of the common weed Cardamine hirsuta have remarkable ability to launch seeds far from plant. The energy for this explosion comes tension that builds up in fruit valves. Above a critical threshold, fractures along its dehiscence zone and two valves coil explosively, ejecting seeds. A mechanism generate is drying, causing tissues shrink. However, does not happen C. fruit. Instead, produced by active contraction growing exocarp cells outer layer Exactly how growth causes tissue contract pulling force unknown. Here we show reorientation microtubules cell cortex changes orientation cellulose microfibrils wall consequent cellular pattern. We used mechanical modeling emerges through due highly anisotropic load-bearing their effect on shape. By explicitly defining as multi-layered our model, discovered cross-lamellate pattern further enhances developing cells. Therefore, interplay properties with turgor-driven enables sufficient power explosive dispersal.

Language: Английский

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Spatiotemporally distinct responses to mechanical forces shape the developing seed of Arabidopsis

The EMBO Journal, Journal Year: 2024, Volume and Issue: 43(13), P. 2733 - 2758

Published: June 3, 2024

Language: Английский

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A crosstalk between auxin and brassinosteroid regulates leaf shape by modulating growth anisotropy

Molecular Plant, Journal Year: 2021, Volume and Issue: 14(6), P. 949 - 962

Published: March 14, 2021

Language: Английский

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