Symmetry breaking in plants: molecular mechanisms regulating asymmetric cell divisions in Arabidopsis.

Journal Article (Review;Journal Article)

Asymmetric cell division generates cell types with different specialized functions or fates. This type of division is critical to the overall cellular organization and development of many multicellular organisms. In plants, regulated asymmetric cell divisions are of particular importance because cell migration does not occur. The influence of extrinsic cues on asymmetric cell division in plants is well documented. Recently, candidate intrinsic factors have been identified and links between intrinsic and extrinsic components are beginning to be elucidated. A novel mechanism in breaking symmetry was revealed that involves the movement of typically intrinsic factors between plant cells. As we learn more about the regulation of asymmetric cell divisions in plants, we can begin to reflect on the similarities and differences between the strategies used by plants and animals. Focusing on the underlying molecular mechanisms, this article describes three selected cases of symmetry-breaking events in the model plant Arabidopsis thaliana. These examples occur in early embryogenesis, stomatal development, and ground tissue formation in the root.

Full Text

Duke Authors

Cited Authors

  • Petricka, JJ; Van Norman, JM; Benfey, PN

Published Date

  • November 2009

Published In

Volume / Issue

  • 1 / 5

Start / End Page

  • a000497 -

PubMed ID

  • 20066115

Pubmed Central ID

  • PMC2773642

Electronic International Standard Serial Number (EISSN)

  • 1943-0264

International Standard Serial Number (ISSN)

  • 1943-0264

Digital Object Identifier (DOI)

  • 10.1101/cshperspect.a000497


  • eng