Genome wide analysis of Sorghum bicolor L. CAMTA Transcription Factors

Calmodulin binding transcription activators (camtas) are well-characterized in the plants. the camta gene family plays an important role in a variety of biological processes, such as resistance to diseases or response to biotic and abiotic factors. in this study, 7 camta genes were identified in the sorghum bicolor l. genome and expression profiles of sobic-camta genes in root and shoot tissues were analyzed. the molecular weight and length of sobic-camta proteins ranged from 95.22 kda (sobic-camta-6) to 114.86 kda (sobic-camta-5) and 845 (sobic-camta-6) to 1030 (sobic-camta-5) amino acids, respectively. estimated number of exons determined among sobic -camta genes was between 10 and 13. the isoelectric points ranged from 5.55 (sobic-camta-5.) to 8.36 (sobic-camta-4). sobic-camta-2/sobic-camta-3 tandem duplicated genes, while sobic - camta-3/sobic-camta-5 and sobic-camta-6/sobic-camta-7 were identified as segmentally- duplicated genes. according to the phylogenetic tree, which drawn using camta proteins of s. bicolor l., arabidopsis thaliana (l.) heynh and zea mays l., three main groups (a, b and c) were obtained. the expression profiles of sobic-camta genes were determined by applying different nitrogen sources to different tissues of s. bicolor l. the results of this study would provide important information to understand the molecular structure of the camta transcription factor gene family in sorghum.