Genome Wide Analysis of Heat Shock Factors (HSF) Gene Family of Arabidopsis Thaliana

Abstract

Heat shock factors (HSF) are one of the most important regulators which control heat stress, damage and other biological processes. In HSF family, genes have been properly characterized in tomato and many other plants. In this study, the genome wide analysis of heat shock factors was performed in Arabidopsis thaliana family to understand the genomic information of HSF. Twenty-four members of HSF family were retrieved in Arabidopsis thaliana after structural characteristics and phylogenetic comparison. Twenty-four members of HSF divided into three subclasses according to conservation in structure. Plant Transcriptional factor database (TFDB) analysis was also used to find out location of uneven distribution of HSF five chromosomes in Arabidopsis thaliana. Further, conserved motifs and domain of HSF family were characterized. Gene structure analysis was used for intron and exon number and their location information of all genes of HSF. On the bases of promoter analysis, five cis-regulatory elements have been selected and then figured out on thousand base pairs of promoter sequence. Depending upon this information, one would be able to understand the genomic analysis of HSF family in Arabidopsis thaliana and can be further used for comparison to other species. This whole study contains the knowledge about the genome wide analysis of genes of Heat Stress factors in the Arabidopsis thaliana, and it also elaborate that how the HSF works and plays an important role in the heat stress conditions.

Keywords: HSF, Arabidopsis thaliana, domain, genome wide analysis