Conserved cis-regulatory elements putatively implicated in ABA signalling pathways.

Regions 1 kb upstream of the predicted start codon of HvHK1, HvHP2 and HvRR1 were screened for known cis-elements and interacting transcription factors by using PlantPAN (http://plantpan.mbc.nctu.edu.tw) web-based interface under the default settings (1.0 - core similarity, 0.75 - matrix similarity; detailed results Table S5).*statistical analysis of co-occurence of transcription factor binding sites in the promoter regions (−1000 bp) of the three genes was conducted by using the PlantPAN tool ‘Gene Group Analysis’ with distance constraint.