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Abstract Detail


Cell-to-Cell and Long Distance Signaling

Valdivia, Elene R. [1], Chevalier, David [2], Walker, John [2].

Regulation of trichome socket cell fate and pattern formation.

Cellular communication is essential to coordinate the actions of neighboring cells. The ability of cells to recognize and appropriately respond to their microenvironment is the basis of development, tissue repair and immunity. We are investigating the molecular mechanisms that mediate cell-cell communication between the developing trichome and the socket cells in Arabidopsis thaliana. Trichomes are large, single cells that develop from epidermal cells on leaves and stems, and are distributed uniformly on the surface of the epidermis. Socket cells, also derived from epidermal cells, form a ring of eight to twelve support cells around a mature trichome cell. It is likely that interactions between developing epidermal cells determine which cells become committed to trichome development and which cells are recruited as socket cells, although very little is known about the molecular mechanisms that mediate this interaction
One of the objectives is to investigate the processes of socket cell recruitment and differentiation, with particular attention to the molecular mechanisms involved in the cellular communication that initiates socket cell formation. We are currently utilizing the large collection of previously described mutants with altered trichome development in combination with a recently identified gene that modifies the interaction between the trichome and the surrounding epidermis to further investigate the mechanisms involved in cellular communication that result in cell formation.
The results from these experiments will provide insights into the mechanisms that pattern the surface of leaves and will contribute to a better understanding of the basis of growth and development in plants.


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1 - University of Missouri-Columbia, Division of Biological Sciences, 304 Life Sciences Center, Columbia, MO, 65203, USA
2 - University of Missouri-Columbia, Division of Biological Sciences

Keywords:
trichome socket cells
Arabidopsis thaliana
Cell fate
Cell-cell communication
pattern formation.

Presentation Type: Plant Biology Abstract
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P34009
Abstract ID:948


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