Fig. 3
From: Physio-biochemical and ultrastructural impact of (Fe3O4) nanoparticles on tobacco
Changes in photosynthetic parameters in Nicotiana tabacum and the trend of each parameter in response to size and concentration of (Fe3O4) NPs-treated plants as compared to control plants. Photosynthetic rate [μmol m− 2 s− 1] (a and b). Stomatal conductance [mol (H2O) m− 2 s− 1] (c and d). Transpiration rate [mmol(H2O) m− 2 s− 1] (e and f) . Data represent the means (± SE) of three independent experiments. * indicates values that are significantly different from the control (Post-hoc tukey test with P < 0.05)