Phylogenetic relationship, gene structure, and gene expression pattern of MYB family in G. hirsutum (A) the phylogenetic tree of MYB proteins in upland cotton (B) the exon/intron structure of MYB genes of upland cotton. The blue boxes represent upstream/downstream, yellow boxes represent exons (CDS) and black lines indicate introns. (C) Expression patterns of MYB genes in upland cotton during different stages of cotton fiber development (â1, 1, 3, 5, and 10DPA). The RNA-seq data were analyzed by genesis_v1.7.6.30.09.10-DIGERATI software. Red color represents the MYB genes expressed at higher levels, black represents the genes expressed at lower levels and white color represents the genes that could not be detected by RNA-seq across different stages of fiber development. (TIF 64281 kb