To understand the role of B3 superfamily in the process of upland cotton fiber development and pigment metabolism by using bioinformatics methods, ARF and LAV subfamily members of the B3 superfamily in upland cotton were characterized by sequence, chromosome location, conserved motifs, gene structure, phylogenetic evolution, and expression patterns. The results showed that ARF and LAV subfamily members of the B3 superfamily in upland cotton were screened and identified 49 GhARF and 8 GhLAV in the genome of ...