Journal article
Arabidopsis CAP Regulates the Actin Cytoskeleton Necessary for Plant Cell Elongation and Division
The Plant Cell Online, Vol.14(1), pp.149-163
2002
Abstract
An Arabidopsis cDNA (AtCAP1) that encodes a predicted protein of 476 amino acids highly homologous with the yeast cyclase-associated protein (CAP) was isolated. Expression of AtCAP1 in the budding yeast CAP mutant was able to rescue defects such as abnormal cell morphology and random budding pattern. The C-terminal domain, 158 amino acids of AtCAP1 possessing in vitro actin binding activity, was needed for the regulation of cytoskeleton-related defects of yeast. Transgenic plants overexpressing AtCAP1 under the regulation of a glucocorticoid-inducible promoter showed different levels of AtCAP1 accumulation related to the extent of growth abnormalities, in particular size reduction of leaves as well as petioles. Morphological alterations in leaves were attributable to decreased cell size and cell number in both epidermal and mesophyll cells. Tobacco suspension-cultured cells (Bright Yellow 2) overexpressing AtCAP1 exhibited defects in actin filaments and were unable to undergo mitosis. Furthermore, an immunoprecipitation experiment suggested that AtCAP1 interacted with actin in vivo. Therefore, AtCAP1 may play a functional role in actin cytoskeleton networking that is essential for proper cell elongation and division.
Details
- Title
- Arabidopsis CAP Regulates the Actin Cytoskeleton Necessary for Plant Cell Elongation and Division
- Authors/Creators
- R.A. Barrero (Author/Creator) - The University of TokyoM. Umeda (Author/Creator) - The University of TokyoS. Yamamura (Author/Creator) - Iwate Biotechnology Research CenterH. Uchimiya (Author/Creator) - The University of Tokyo
- Publication Details
- The Plant Cell Online, Vol.14(1), pp.149-163
- Publisher
- © 2002, American Society of Plant Biologists
- Identifiers
- 991005544445607891
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 1 Clinical & Life Sciences
- 1.96 Cell Biology
- 1.96.224 Cell Mechanics
- Web Of Science research areas
- Biochemistry & Molecular Biology
- Cell Biology
- Plant Sciences
- ESI research areas
- Plant & Animal Science