Expression Profiling of Transgenic Arabidopsis Over- and Underexpressing SR45, a Plant-Specific Serine /Arginine -Rich Factor
Balasubramanian, Dheepa
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https://hdl.handle.net/2142/84810
Description
Title
Expression Profiling of Transgenic Arabidopsis Over- and Underexpressing SR45, a Plant-Specific Serine /Arginine -Rich Factor
Author(s)
Balasubramanian, Dheepa
Issue Date
2005
Doctoral Committee Chair(s)
Schuler, Mary A.
Department of Study
Biochemistry
Discipline
Biochemistry
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Chemistry, Biochemistry
Language
eng
Abstract
The effects of SR45 depletion on other transcripts have been studied using RT-PCR analyses and more recently using oligoarray approaches. In plants completely silenced for the transgenic mGFP-SR45 transcript and nearly completely silenced for the endogenous SR45 transcript, several other splicing factor transcripts are downregulated or alternatively spliced. Global oligoarray profiling of an initial set of plants overexpressing or underexpressing SR45 transcripts has indicated that SR45 depletion downregulates a number of important transport factors (nucleoporin 155, exportin 1) as well as several stress-related transcripts that may represent secondary downstream targets. As a result of these secondary effects, it is likely that SR45-silenced plants are more susceptible to stress.
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