In silico identification of drought responsive miRNAs target genes in Canola(Brassica napus)

MicroRNAs (miRNAs) are small, non-coding, and regulatory molecules that play an important role in post gene expression regulation in response to biotic and abiotic stresses. Although Canola (Brassica napus) is a globally important oilseed, little is known about its regulation mechanisms target genes of drought-responsive miRNAs. Then, in this study drought-responsive miRNAs target genes of bna-miR156b, bna-miR156c, bna-miR156g, bna-miR171a, bna-miR171d, bna-miR171e, bna-miR172d, bna-miR399a, bna-miR399b, bna-miR396a, bna-miR395d, bna-miR395e and bna-miR395f in Canola were identified by bioinformatics tools. Molecular function, biological process, cellular component, proteins interaction, and relation of their pathways were investigated. In the present study were identified 225 target genes for miRNAs. Bioinformatics study showed that ribosome, proteasome, and chaperon-related genes of RPP1C, RPL36AA, RPL9D, RPS11, RPT1A, RPT2a, RPT4A, RPN11, HSF1, HSFA1E, HSF4, and HSFB2B are targets of drought-responsive miRNAs of bna-miR172d ،bna-miR156b/c/g، bna-miR860، bna-miR396a and bna-miR395d. Ribosomes, proteasomes, and chaperons are regulated by drought-responsive miRNAs for protein regulation and stress tolerance under drought conditions. Laboratory study of identified genes in this study can be a fundamental step in the production of drought-resistant Canola cultivars in inbreeding and genetic engineering programs.