Fig. 7From: A systematical genome-wide analysis and screening of WRKY transcription factor family engaged in abiotic stress response in sweetpotatoRelative gene expression of 10 IbWRKYs under salt, PEG6000, cold and heat stresses detected by qRT-PCR. The expression value at 0 h was normalized to 1, and the Y-axis delineates the expression fold changes comparing with 0 h. Bars represent the mean of three biological replicates ± SE. The two-fold thresholds are presented by dotted linesBack to article page