Fig. 1
The effects of abiotic stress on primary metabolism. (a-c) Carbon assimilation rate (A), (d-f) stomatal conductance (g s,) and (g-i) foliar total non-structural carbohydrate content (TNC) of soybeans grown in season-long drought (a, d, g), elevated [O3] (b, e, h) and elevated temperature (c, f, i) conditions. A and g s measurements were taken on different days for ozone and temperature treatments and different year for drought treatment. This was done in order to capture the proper development stage. The light level for A and g s measurements for the drought treatment was 1900 μmol m−2 s−1 , 1650 μmol m−2 s−1 for the ozone treatment, and 450 μmol m−2 s−1 for the temperature treatment (due to cloudy day conditions). Asterisks represent significance (* p < 0.05, ** p < 0.01, *** p < 0.001)