Coexpression analysis of signaling genes under single and combined stress conditions. A, Number of differentially regulated genes according to the functional group “signaling” is given for each stress condition. B, Significant regulated signaling genes within the heat network from A visualized in a network of coexpressed genes provided by the ARANET Web tool (www.functionalnet.org/aranet/). C, Table shows the number of treatment-specific signaling genes found to be coexpressed within one treatment (shaded) and the number of commonly shared genes compared with coexpressed signaling genes of other stress conditions (not shaded). Conditions are as follows: heat (h), drought (d), TuMV (v), drought and heat (dh), TuMV and heat (vh), drought and TuMV (dv), TuMV, drought, and heat (vdh), and severe heat (severe h).