Fig. 3

Phylogenetic tree and gene structure of the CsHsfs. a Phylogenetic tree was constructed by MEGA (version 7.0) with the maximum likelihood method (1000 replicates). Different colors represent different CsHsf subfamilies. b Exon/intron structures of CsHsf genes . Exons, UTRs, and introns are represented by the red round-cornered rectangles, blue round-cornered rectangles, and single lines, respectively. Lengths of exons, UTRs, and introns of each CsHsf gene are displayed proportionally