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Abstract Detail


Growth and Vegetative Development

McMahon, K. Wyatt [1], Wilkins, Thea [2].

Functional genomics of a cotton mutant that alters plant morphogenesis.

Ligon lintless-1 (Li1) is a cotton fiber mutant that produces short lint fibers that are only 25% the length of normal fibers. Interestingly, the mutant phenotype is pleiotropic, producing vegetative and reproductive tissues with altered morphology. Li1 plants are fragile and shorter in stature, and are characterized by crinkled leaves and twisted stems and petioles. To better understand the processes involved in plant development and impacted by the Li1 mutation, a functional genomics approach was taken to determine what genes and biological processes were significantly misexpressed in Li1 plants. Expression profiling using newly designed custom cotton gene chips revealed a number of crucial biological processes that are severely altered in the presence of the mutation, including genes associated with the cytoskeleton, phytohormone responses, and secondary metabolism. Misexpression of these genes also has deleterious consequences on cell structure and morphogenesis, indicating that these processes play a crucial role in plant growth and development.


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1 - Texas Tech University, Plant and Soil Sciences, Experimental Science Building - MS 3132, Canton and Main, Lubbock, TX, 79409, USA
2 - Texas Tech University, Plant and Soil Sciences

Keywords:
leaf morphology
Cotton fiber.

Presentation Type: Plant Biology Abstract
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P26058
Abstract ID:1986


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