Figure 2

Distribution of dehydration stress responding genes in Z. mays and A. thaliana in S1 and S3. A) Transcript levels from dehydration stress responding genes that are up-regulated or down-regulated during S1 (color key at the bottom) plotted by the log2 of their S1 levels along the x-axis, and by log2 of their S1/watered ratio along the y-axis (left-hand panel); in the right-hand panel, transcript levels of dehydration stress memory genes are as above, except the y-axis is the log2 of the S3/watered ratio. The clustering of the four colors illustrates the distribution of the four distinct memory response types: revised response [+/-] and [-/+] memory genes clustering closer to their pre-stressed (W) levels, while the [+/+] and [-/-] increasing separation from these levels. B) Transcript levels from dehydration stress responding genes and from the memory genes in A. thaliana. Data are from Ding et al. 2013.