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Fig. 2 | BMC Plant Biology

Fig. 2

From: Genome-wide analysis of cotton GH3 subfamily II reveals functional divergence in fiber development, hormone response and plant architecture

Fig. 2

Phylogenetic relationship, gene structure and motif analysis of 20 GhGH3s. a The small phylogenetic tree constructed with 20 GhGH3s, clearly exhibiting three subgroups. b Exon-intron organizations. Subgroup 1 and 2 have three exons while subgroup 3 genes have four or five. The length of the second exon in subgroup 2 is longer than that of subgroup 1. Black boxes and lines represent exons and introns, respectively. c Conserved motif analysis. Except for GhGH3.18, all of the remaining 19 GhGH3s share the same fourteen motifs ranging from 1 to 14. Necessary conserved motifs/residues for hormone-amido synthetase activity were analyzed, and motifs 1, 2 and 4 contain the nucleotide (ATP/AMP)-binding motifs/residues, motifs 3, 4, 6 and 12 possess the hormone-binding motifs/residues. The residues contained in motifs 8, 10 and 12 determine amino-acid preferences. The number above each motif represents its code as described below

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