Application of heat stress in situ demonstrates a protective role of irradiation on photosynthetic performance in alpine plants

  title={Application of heat stress in situ demonstrates a protective role of irradiation on photosynthetic performance in alpine plants},
  author={Othmar Buchner and M. P. Stoll and Matthias Karadar and Ilse Kranner and Gilbert Neuner},
  booktitle={Plant, cell & environment},
The impact of sublethal heat on photosynthetic performance, photosynthetic pigments and free radical scavenging activity was examined in three high mountain species, Rhododendron ferrugineum, Senecio incanus and Ranunculus glacialis using controlled in situ applications of heat stress, both in darkness and under natural solar irradiation. Heat treatments applied in the dark reversibly reduced photosynthetic performance and the maximum quantum efficiency of photosystem II (Fv /Fm), which… CONTINUE READING


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