Submitted to: Plant and Animal Genome Conference
Publication Type: Abstract Only
Publication Acceptance Date: 1/15/2005
Publication Date: 1/19/2005
Citation: Payton, P.R., Rocha-Granados, C., Ochoa-Alejo, N. 2005. Transcriptional profiling of drought stress in chile[abstract]. Plant and Animal Genome Conference. San Diego, California. January 15-19, 2005.
Technical Abstract: Chile pepper is an economically important crop in semi-arid subtropical regions of Mexico and the Couthwestern United States. Because these areas are often subject to water deficit and high thermal stress, significant decreases in yield are routine. The identification of genetic factors controlling the complex responses of plants to abiotic stress provides a solid basis for improving resistance to drought and thermal stress. We have started a collaborative effort in examining drought-stress responses in chile pepper. The current research is directed toward 1) the identification of molecular responses to water-deficit and temperature stress, 2) the development and appication of new tools for screening germplasm for desired stress tolerance traits, 3) the development of transformation techniques for genetic enhancement of abiotic stress tolerence in pepper. We have combined differential display and cDNA microarray analyses to identify a set of stress-responsive genes in pepper leaf, stem, and root tissues, as well as in stress tolerant cell lines. The results of our expression profiling of drought stress in chile, the development of drought resistant cell lines, and advances in chile pepper transformation will be presented at this meeting.