Fig. 2

Phylogenetic relationships, gene structure and conserved protein motif analyses of GRF genes from cotton. a A neighbor-joining phylogenetic tree of 82 GRF proteins in cotton was constructed using MEGA5.1 software and the bootstrap consensus tree was inferred from 1000 replicates. b Exon–intron structure of cotton GRF genes. c Distributions of seven conserved motifs in cotton GRF genes. The sequence information for each motif is provided in Additional file 6: Table S4