Fig. 3

Structure and motif distribution of Cotton SRO genes/proteins. A Phylogenetic tree and exon/intron structure among cotton SRO proteins, un-rooted tree using neighbor-joining method was constructed with protein sequences using MEGA 7.0 software. Exon/intron structure, length and distribution were analyzed by comparing genomic and cDNA sequences of cotton SRO genes. B Position of seven specific motifs was schematically displayed using online MEME tool