Fig. 4From: Genome-wide identification and expression analysis of the polygalacturonase gene family in sweetpotatoThe cis-acting elements predication in the 2Â kb sequences upstream of the IbPGs. (a) The phylogenetic tree of IbPGs, and the blocks of different colors represented different subclasses (Clade A-F). (b) The types of elements were marked by different color blocks on each line. (c) The column chart represented the gene numbers of cis-acting elementsBack to article page