Fig. 2

Hypothetical model showing altered transcriptional regulatory mechanisms leading to reduced coleoptile elongation of rad mutant. The presence of high endogenous level of ABA in the seeds of rad mutant could lead to ABA dependent signaling via serine/threonine kinases. It might lead to the activation of a number of TFs acting as repressors of metabolic genes that slow down the synthesis of cell building blocks for suppression of elongation to maintain metabolites for cell survival. The bigger filled squares with font color in black represent various positive transcriptional modules showing cis-elements and their cognate transcriptional regulators. The bigger filled squares with font color in red represent various transcriptional repressors with cis-elements and their cognate transcriptional regulators. The dash lines represent the hypothesis predicted from the gene expression data of the rad mutant