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'Effect of Oxygen and C 0 2 Concentrations' in keywords
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1981 (1)
1Author    Günter DöhlerRequires cookie*
 Title    Einfluß von Sauerstoff auf die photosynthetische C 0 2-Fixierung von Synechococcus Effect of Oxygen on Photosynthetic C 0 2 Fixation of Synechococcus  
 Abstract    The cyanobacterium Synechococcus (Anacystis nidulans strain L 1402-1) was grown at +35 °C in air and in air enriched with 2.2 vol.% C 0 2. The effect o f different oxygen concentrations (0, 2, 20, 50, 75 and 99.97 or 97.8 vol.%) was studied in low (0.03 vol.%) and high (2.2 vol.%) C 0 2 concentrations at + 35 °C. After exposure to a nitrogen atmosphere and low C 0 2 content I4C-bicarbonate was mainly incorporated into aspartate and glycine/serine. During oxygenic photosynthetic C 0 2 fixation label in aspartate decreased and a high degree o f radioactivity could be found in 3-phosphoglyceric acid and sugar monophosphates. The Calvin cycle was the main fixing pathway in 2.2 vol.% C 0 2 during anoxygenic and oxygenic conditions independent on the 0 2 concentrations during the experiments. N o oxygen enhancement o f photosynthetic C 0 2 fixation could be found. Possible mechanism involved in C 0 2 fixation pathways and glycolate metabolism underlying the effect o f oxygen was discussed. 
  Reference    Z. Naturforsch. 36c, 93—9 (1981); eingegangen am 9. Oktober 1980 
  Published    1981 
  Keywords    14C 0 2 Fixation, Effect of Oxygen and C 0 2 Concentrations, Synechococcus 
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 TEI-XML for    default:Reihe_C/36/ZNC-1981-36c-0093.pdf 
 Identifier    ZNC-1981-36c-0093 
 Volume    36