Fig. 1

Volcano Plot of the differentially expressed genes. The differentially expressed genes were generated by comparing the gene expression values under stress of different time duration (0.5 h, 1 h, 2 h) with that of control (0 h). a the comparison of 0.5-h of stress with that of 0-h of stress; b the comparison of 1-h of stress with that of 0-h of stress; c the comparison of 2-h of stress with that of 0-h of stress; the number of up-regulated genes increased constantly with the increasing of stress duration time, the number of down-regulated genes also increased constantly with the increasing of stress duration time