Fig. 3.

Interaction between inoculations and N rates on net photosynthetic rate (A) (A), stomatal conductance (Gs) (B), internal CO₂ concentration in the substomatal chamber (Ci) (C), leaf transpiration (D), H₂O₂ (E), malondialdehyde (MDA) (F) and leaf soluble protein concentration (G). Lowercase letters represent the difference between inoculations at each N rate; Ctl = control, Azo = single inoculation with A. brasilense, Bac = single inoculation with B. subtilis and Azo + Bac = co-inoculation with A. brasilense and B. subtilis; ± refers to standard deviation of the mean