Gaseous NO2 effects on stomatal behavior, photosynthesis and respiration of hybrid poplar leaves

摘要: In this study, we used poplar as a model plant and investigated the effects of gaseous nitrogen dioxide (NO2, 4 µl 1−1) on stomatal conductance, photosynthesis, dark- photorespiration Populus alba × berolinensis hybrid leaves using photosynthesis system scanning electron microscope technique. The results showed that net photosynthetic rates were significantly reduced in exposed to 1−1 NO2 for 48 h compared with ambient carbon 380 <0.1 (the control) 14 h. decline rate was caused mainly by treatment. Dark respiration dependent co-action two factors (leaf temperature treatment time). Post-illumination burst occurred at 13–15 s after turning light off, whereas phenomenon absent control leaves.