Seasonal variation in ammonia compensation point and nitrogen pools in beech leaves (Fagus sylvatica)

  title={Seasonal variation in ammonia compensation point and nitrogen pools in beech leaves (Fagus sylvatica)},
  author={Liang Wang and Yingchun Xu and Jan Kofod Schjoerring},
  journal={Plant and Soil},
Ammonia (NH3) fluxes between beech leaves (Fagus sylvatica) and the atmosphere were investigated in a 90-year-old forest canopy and related to leaf nitrogen (N) pools and glutamine synthetase (GS) activities. The stomatal ammonia compensation point, χNH3, was measured by both a twig cuvette and bioassay techniques involving measurements of pH and ammonium (NH 4 + ) concentration in the leaf apoplastic solution. The χNH3 determined on the basis of the gas exchange measurements followed a… CONTINUE READING
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