Gibberellic acid and cGMP-dependent transcriptional regulation in arabidopsis thaliana
Dawe, Adam Sean
Meier, Stuart Kurt
Ludidi, Ndiko N.
Bajic, Vladimir B.
Gehring, Christoph A
KAUST DepartmentComputational Bioscience Research Center (CBRC)
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Applied Mathematics and Computational Science Program
Biological and Environmental Sciences and Engineering (BESE) Division
Molecular Signalling Group
Permanent link to this recordhttp://hdl.handle.net/10754/561498
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AbstractAn ever increasing amount of transcriptomic data and analysis tools provide novel insight into complex responses of biological systems. Given these resources we have undertaken to review aspects of transcriptional regulation in response to the plant hormone gibberellic acid (GA) and its second messenger guanosine 3',5'-cyclic monophosphate (cGMP) in Arabidopsis thaliana, both wild type and selected mutants. Evidence suggests enrichment of GA-responsive (GARE) elements in promoters of genes that are transcriptionally upregulated in response to cGMP but downregulated in a GA insensitive mutant (ga1-3). In contrast, in the genes upregulated in the mutant, no enrichment in the GARE is observed suggesting that GARE motifs are diagnostic for GA-induced and cGMP-dependent transcriptional upregulation. Further, we review how expression studies of GA-dependent transcription factors and transcriptional networks based on common promoter signatures derived from ab initio analyses can contribute to our understanding of plant responses at the systems level. © 2010 Landes Bioscience.
PublisherInforma UK Limited
JournalPlant Signaling & Behavior