Cis-regulatory signatures of orthologous stress-associated bZIP transcription factors from rice, sorghum and Arabidopsis based on phylogenetic footprints.

ABSTRACT:

Background

The potential contribution of upstream sequence variation to the unique features of orthologous genes is just beginning to be unraveled. A core subset of stress-associated bZIP transcription factors from rice (Oryza sativa) formed ten clusters of orthologous groups (COG) with genes from the monocot sorghum (Sorghum bicolor) and dicot Arabidopsis (Arabidopsis thaliana). The total cis-regulatory information content of each stress-associated COG was examined by phylogenetic footprinting to reveal ortholog-specific, lineage-specific and species-specific conservation patterns.

Results

The most apparent pattern observed was the occurrence of spatially conserved 'core modules' among the COGs but not among paralogs. These core modules are comprised of various combinations

SUBMITTER: Xu F 

PROVIDER: S-EPMC3522565 | biostudies-literature | 2012 Sep

REPOSITORIES: biostudies-literature