Air quality: NO-fixation capability of different trees


The plant-based NO-fixation lowers the concentration of atmospheric NOx and in this context plants have a beneficial effect on air quality and human health. 15NO fumigation experiments allowed us to calculate a daily NO-uptake of approximately 250 mg N/kg plant dry weight. With regard to the air quality in cities with high concentrations of nitrogen oxides, the NO fixing capability of plants could contribute significantly to the reduction of NO and thus improve air quality. This finding may be especially significant for future urban planning in metropolitan areas and may contribute to improved living conditions there.

Therefore, we are analysing the NO-fixing capability of different city tree species and try to improve the NO-fixing ability of non-symbiotic hemoglobin proteins.

Jiangli Zhang, Christian Lindermayr