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'Heavy Metals' in keywords Facet   Publication Year 1999  [X]
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1999[X]
1Author    M. Ciscato3 ', J. Vangronsveldb, R. Valcke3Requires cookie*
 Title    Effects of Heavy Metals on the Fast Chlorophyll Fluorescence Induction Kinetics of Photosystem II: a Comparative Study  
 Abstract    The effects of toxic concentrations of Cu, Zn and Cd on the fast induction kinetics of fluorescence from photosystem(PS)II were investigated in a comparative way. The fast fluo­ rescence transient from primary leaves of m etal-treated bean plants was studied. During several days after metal application, the time course of the changes induced by the different metals was monitored. The results evidenced not only a different time course of the changes in fluorescence related parameters for the three metals, but also different effects on the fluorescence induction kinetics, which could possibly be linked to different mechanisms of action of the metals. 
  Reference    Z. Naturforsch. 54c, 735 (1999); received November 8 1998/M arch 10 1999 
  Published    1999 
  Keywords    Cadmium, Chlorophyll Fluorescence, Copper, Heavy Metals, Zinc 
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 TEI-XML for    default:Reihe_C/54/ZNC-1999-54c-0735.pdf 
 Identifier    ZNC-1999-54c-0735 
 Volume    54 
2Author    Herman Clijsters, Ann Cuypers, Jaco VangronsveldRequires cookie*
 Title    Physiological Responses to Heavy Metals in Higher Plants; Defence against Oxidative Stress  
 Abstract    Depending on the physiological process investigated heavy metal phytotoxicity can be either inhibitory or stimulatory. Photosynthesis and its partial light and dark reactions are inhibited; the activity of various enzymes, located in several cell compartiments, is increased. These enzymes are mostly induced since metals affect the transcription activity. They appear to be related to the plant defence against oxidative stress caused by metal phytotoxicity. Careful examination of the time course of this induction reveals differences in response between the metals applied. 
  Reference    Z. Naturforsch. 54c, 730—7 (1999); received November 22 1998/April 10 1999 
  Published    1999 
  Keywords    Heavy Metals, Photosynthesis, Enzyme Induction, Oxidative Stress, Plant Defence Mechanisms 
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 TEI-XML for    default:Reihe_C/54/ZNC-1999-54c-0730.pdf 
 Identifier    ZNC-1999-54c-0730 
 Volume    54