Sep 1, 2012

Strategies for cell shape control in tip-growing cells

American Journal of Botany
Otger CampàsL Mahadevan

Abstract

Despite the large diversity in biological cell morphology, the processes that specify and control cell shape are not yet fully understood. Here we study the shape of tip-growing, walled cells, which have evolved a polar mode of cell morphogenesis leading to characteristic filamentous cell morphologies that extend only apically. We identified the relevant parameters for the control of cell shape and derived scaling laws based on mass conservation and force balance that connect these parameters to the resulting geometrical phenotypes. These laws provide quantitative testable relations linking morphological phenotypes to the biophysical processes involved in establishing and modulating cell shape in tip-growing, walled cells. By comparing our theoretical results to the observed morphological variation within and across species, we found that tip-growing cells from plant and fungal species share a common strategy to shape the cell, whereas oomycete species have evolved a different mechanism.

  • References36
  • Citations7
  • References36
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Citations

Mentioned in this Paper

Biophysical Processes
Filamentous fungus
Phylogeny
Kinematics
Phylum oomycetes
Fungi
Cell Morphogenesis
Plant Cells
Cellular Morphology (Discipline)

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