Fig. 3

Effects related to ambient air humidity in heat stress and combined drought-heat stress. Venn diagrams of up- and down-regulated variables between low (LrH) and high air humidity (HrH) settings and major enriched GO terms in each group are shown for heat stress (H; a) and combined stress (DH; b). In addition, the total number of differentially regulated variables under each stress condition relative to the control condition is depicted for transcriptomic (c) and metabolomic data (d). The relatively smaller number of down-regulations as compared with up-regulations in the metabolic data is related to the data acquisition: low abundances cannot be detected and are therefore not accurately quantified but set close to the detection threshold