M. Geiger

The nitrate and ammonium nitrate supply have a major influence on the response of photosynthesis, carbon metabolism, nitrogen metabolism and growth to elevated carbon dioxide in tobacco

M. Geiger, Volker Haake, Frank Ludewig et al. · Plant Cell & Environment · 1999 · 254 citations · Full text

Carbon Dioxide, Nitrate Metabolism, Engineering +18

A web service for controlling the quality of measurements of global solar irradiation

M. Geiger, Lamissa Diabaté, Lionel Ménard et al. · Solar Energy · 2002 · 182 citations

Solar Variability, Environmental Monitoring, Engineering +11

Enhanced carbon dioxide leads to a modified diurnal rhythm of nitrate reductase activity in older plants, and a large stimulation of nitrate reductase activity and higher levels of amino acids in young tobacco plants

M. Geiger, Pia Walch‐Liu, Christof Engels et al. · Plant Cell & Environment · 1998 · 165 citations · Full text

Photorespiration, Nitrate Assimilation, Botany +18

Elevated carbon dioxide increases nitrate uptake and nitrate reductase activity when tobacco is growing on nitrate, but increases ammonium uptake and inhibits nitrate reductase activity when tobacco is growing on ammonium nitrate

Petra Matt, M. Geiger, Pia Walch‐Liu et al. · Plant Cell & Environment · 2001 · 150 citations · Full text

Carbon Dioxide, Engineering, Botany +17

The immediate cause of the diurnal changes of nitrogen metabolism in leaves of nitrate‐replete tobacco: a major imbalance between the rate of nitrate reduction and the rates of nitrate uptake and ammonium metabolism during the first part of the light period

Petra Matt, M. Geiger, Pia Walch‐Liu et al. · Plant Cell & Environment · 2001 · 144 citations

Plant Circadian Clock, Biogeochemistry, Nitrate Uptake +14