Genome wide transcriptional profiling of acclimation to photoperiod in high-latitude accessions of Arabidopsis thaliana

► DNA microarray was used to identify genes involved in response to photoperiod in Arabidopsis thaliana. ► Ethylene mediated signaling pathway was significantly overrepresented in 16 h photoperiod. ► Genes involved in response to auxin stimulus were significantly overrepresented in 24 h photoperiod. ► Significantly expressed gene sets were: cold acclimation, dehydration response, phytochrome signaling, vernalization response and circadian clock regulated flowering time genes. ► These are likely involved in transcriptional control of photoperiodic response.