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Fraunhofer-Institut für Atmosphärische Umweltforschung IFU
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PublicationConsequences of chronic ozone exposure in transgenic poplars overexpressing enzymes of the glutathione metabolism( 1997)
;Will, B. ;Eiblmeier, M. ;Langebartels, C.Rennenberg, H.Transgenic poplar trees overexpressing different enzymes of the glutathione metabolism, namely glutathione synthetase, glutathione reductase and gamma-glutamyl-cysteine synthetase (gamma-EC synthetase) were subjected to chronic ozone exposure. After four weeks of fumigation, all lines clearly showed visible damage, compared to controls fumigated with ambient air. However, none of the transgenic lines overexpressing the different enzymes of glutathione metabolism showed enhanced resistance towards ozone. Even the line overexpressing gamma-EC synthetase, which had about 2-fold enhanced glutathione contents, did not show a lower level of damage upon ozone exposure. There was no change in glutathione contents due to ozone fumigation. Apparently, enhanced glutathione content or elevated glutathione reducing capacity does not protect poplar trees from damage derived from chronic ozone exposure. Glutathione does not seem to play a crucial role in detoxifying reactive oxygen species under thes e conditions. -
PublicationStratosphere-troposphere exchange. Regional and global tropopause folding occurence( 1997)
;Beekmann, M. ;Ancellet, G. ;Blonsky, S. ;Muer, D. de ;Ebel, A. ;Elbern, H. ;Henricks, J. ;Kowol, J. ;Mancier, C. ;Sladkovic, R. ;Smit, H.G.J. ;Speth, P. ;Trickl, T.Haver, P. van -
PublicationRole of ozone in forest decline on Wank mountain (Alps)( 1997)
;Rennenberg, H. ;Polle, A.Reuther, M. -
PublicationMonoterpene and isoprene emission in Norway spruce forests( 1997)
;Steinbrecher, R. ;Ziegler, H. ;Eichstädter, G. ;Fehsenfeld, R. ;Kolb, C. ;Rabong, R. ;Schönwitz, R.Schürmann, W. -
PublicationGround-based measurements of ozone and related precursors at 47 deg N 11 deg E( 1997)
;Scheel, H.E. ;Sladkovic, R.Seiler, W.