Journal Article

Cell growth and differentiation in <i>Arabidopsis</i> epidermal cells

Sonia Guimil and Christophe Dunand

in Journal of Experimental Botany

Published on behalf of Society for Experimental Biology

Volume 58, issue 14, pages 3829-3840
Published in print November 2007 | ISSN: 0022-0957
Published online November 2007 | e-ISSN: 1460-2431 | DOI: http://dx.doi.org/10.1093/jxb/erm253
Cell growth and differentiation in Arabidopsis epidermal cells

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Plant epidermal cells are morphologically diverse, differing in size, shape, and function. Their unique morphologies reflect the integral function each cell performs in the organ to which it belongs. Cell morphogenesis involves multiple cellular processes acting in concert to create specialized shapes. The Arabidopsis epidermis contains numerous cell types greatly differing in shape, size, and function. Work on three types of epidermal cells, namely trichomes, root hairs, and pavement cells, has made significant progress towards understanding how plant cells reach their final morphology. These three cell types have highly distinct morphologies and each has become a model cell for the study of morphological processes. A growing body of knowledge is creating a picture of how endoreduplication, cytoskeletal dynamics, vesicle transport, and small GTPase signalling, work in concert to create specialized shapes. Similar mechanisms that determine cell shape and polarity are shared between these cell types, while certain mechanisms remain specific to each.

Keywords: Actin; Arabidopsis; auxin; endoreduplication; GTPase signalling; microtubules; morphogenesis; morphology; pavement cells; planar polarity; root hairs; trichomes; vesicle trafficking

Journal Article.  7108 words.  Illustrated.

Subjects: Plant Sciences and Forestry

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