Fig. 1 Carbon dioxide response curves (assimilation rate vs. intercellular CO2 concentrations) of young asymptomatic leaves on control plants (C), or plants inoculated with Verticillium dahliae (V), Pratylenchus penetrans (P), or with both pathogens (P+V) measured at (a, b) 16 DAI and (c, d) 42 DAI in Exp. 1 and 2. Each point is an average of four leaves (except treatment P+V in Exp. 2, where each point in part d is an average of three leaves because the fourth plant died due to infection). Bars are standard errors of means
