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Single-throughput Complementary High-resolution Analytical Techniques for Characterizing Complex Natural Organic Matter Mixtures
Published on: January 7, 2019
Relationships between respiratory activity and water-soluble sulfhydryl content of Norway spruce needles
C Pfeifhofer1, H Pfeifhofer, D Grill
1Institut für Pflanzenphysiologie, Universität Graz, Schubertstrasse 51, 8010 Graz, Austria.
Abstract:
The rate of respiration of spruce needles was affected by the level of foliar glutathione. At 37 degrees C the rate of respiration increased with increasing water-soluble sulfhydryl content up to 1.3 micromol g(-1) fresh weight. Higher thiol concentrations inhibited the rate of respiration. At 25 degrees C no relationship was observed between glutathione content and rate of respiration. It was concluded that the mechanism by which SO(2) affects plants is temperature dependent.

