title: De Novo Regulatory Motif Discovery Identifies Significant Motifs in Promoters of Five Classes of Plant Dehydrin Genes.
abstract: Plants accumulate dehydrins in response to osmotic stresses. Dehydrins are divided into five different classes, which are thought to be regulated in different manners. To better understand differences in transcriptional regulation of the five dehydrin classes, de novo motif discovery was performed on 350 dehydrin promoter sequences from a total of 51 plant genomes. Overrepresented motifs were identified in the promoters of five dehydrin classes. The Kn dehydrin promoters contain motifs linked with meristem specific expression, as well as motifs linked with cold/dehydration and abscisic acid response. KS dehydrin promoters contain a motif with a GATA core. SKn and YnSKn dehydrin promoters contain motifs that match elements connected with cold/dehydration, abscisic acid and light response. YnKn dehydrin promoters contain motifs that match abscisic acid and light response elements, but not cold/dehydration response elements. Conserved promoter motifs are present in the dehydrin classes and across different plant lineages, indicating that dehydrin gene regulation is likely also conserved.
authors.affiliation: Department of Plant Science, Macdonald Campus, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, QC, H9X 3V9, Canada.
authors.forename: Yevgen
authors.initials: Y
authors.lastname: Zolotarov
authors.affiliation: Department of Plant Science, Macdonald Campus, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, QC, H9X 3V9, Canada.
authors.forename: Martina
authors.initials: M
authors.lastname: Strömvik
mesh_terms: D000040:Abscisic Acid / Q000494:pharmacology; D001483:Base Sequence; D001665:Binding Sites; D050980:GATA Transcription Factors / Q000378:metabolism; D018506:Gene Expression Regulation, Plant / Q000187:drug effects; D018745:Genome, Plant; D008027:Light; D059372:Nucleotide Motifs; D010940:Plant Proteins / Q000737:chemistry / Q000235:genetics*; D011401:Promoter Regions, Genetic; D011485:Protein Binding; D020218:Response Elements; D013696:Temperature
chemical_list: D050980:GATA Transcription Factors; D010940:Plant Proteins; C070556:dehydrin proteins, plant; D000040:Abscisic Acid