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'Cyanophora paradoxa' in keywords
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1983 (3)
1982 (1)
1Author    HainfriedE A Schenk, M. Argarete, Neu-M ÜllerRequires cookie*
 Title    Der Einfluß von Cycloheximid und Chloramphenicol auf die Biosynthese der Photosynthese-Pigmente in Cyanophora paradoxa Korsch I. Photosynthetische Sauerstoffproduktion Photosynthetic O xygen Evolution  
 Abstract    The Influence o f C yclohexim ide and C hloram phenicol on the B iosynthesis o f the Photosynthetic P igm ents in Cyanophora paradoxa I. It is not clear whether an endocytobiont is able to develop during a long evolution tim e only to an organelle like cell structure (defect m utant) with a high degree of m etabolic dependency or also to a perfect cell organelle with genetical dependency to the host nucleus (intercom partm ental translocation of proteins an d /o r gene transfer) in the sense of the Serial Endocytobiosis Hypothesis (SEH). Cyanocyta korschokoffiana, the endocyanelle of C. paradoxa, seems to be a very suitable object to answer this question. Therefore we have studied the influence o f the translation inhibitors cycloheximide (CHI) and chloramphenicol (CA) on the biosynthetic behaviour of this cyanobacterial endocytobiont regarding the photosynthetic oxygen during 20 h developing and incubation time. After dilution with fresh culture m edium the oxygen evolution of the control culture remains nearly constant, if it is related to the phycocyanin content, whereas it increases slowly to a constant level relating to the chlorophyll content (nearly 140-150% o f the starting activity). CHI and CA show a rapid effect on the oxygen evolution. At the first 8 -10 h the oxygen evolution of cultures treated with CA are hardly dim inished and rem ain m ore or less constant with regard to the starting activity, but that of cultures treated with CHI decreases strongly. After 24 h the CHI treated flagellate is photosynthetically inactive and far-reaching destroyed (microscopic observations), indicating that CHI has beside the inhibition effects on protein synthesis also secondary effects on the stability o f m em branes o f C. paradoxa. Der apochlorotische Flagellat Cyanophora 
  Reference    Z. Naturforsch. 38c, 978—983 (1983); received July 19 1983 
  Published    1983 
  Keywords    Cyanophora paradoxa, Photosynthetic Activity, Oxygen Evolution, Chlorophyll, Phycocyanin 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0978.pdf 
 Identifier    ZNC-1983-38c-0978 
 Volume    38 
2Author    Ii Carotinoide, H. Ainfried, E. A. Schenk, H. Arald, S. TranskyRequires cookie*
 Title    Der Einfluß von Cycloheximid und Chloramphenicol auf die Biosynthese der Photosynthese-Pigmente in Cyanophora paradoxa Korsch  
 Abstract    The Influence o f Cyclohexim ide and C hloram phenicol on the B iosynthesis o f the Photosynthetic Pigm ents in Cyanophora paradoxa. II. C arotenoids M argarete N eu-M üller, To prove the extent to which the endocyanelle o f C. paradoxa is autonom ous with respect to the biosynthesis o f its photosynthetic pigments, the degree, to w hich the translation inhibitors cyclohexim ide (CHI) and chloramphenicol (CA) influence the biosynthesis o f carotenoids, was 
  Reference    Z. Naturforsch. 38c, 984—9 (1983); received July 19 1983 
  Published    1983 
  Keywords    Cyanophora paradoxa, Biosynthesis, /?-Carotene, Zeaxanthin, Chlorophyll 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0984.pdf 
 Identifier    ZNC-1983-38c-0984 
 Volume    38 
3Author    Peter Brandt, Sabine Marten, Birgit Müller, Wolfgang WießnerRequires cookie*
 Title    Stadienspezifische Thylakoiddifferenzierung der Endocyanelle Cyanocyta korschikoffiana in der symbiontischen Assoziation mit Cyanophora paradoxa Growth Specific Thylakoid Differentiation of the Endocyanelle Cyanocyta korschikoffiana in the Symbiotic Association with Cyanophora paradoxa  
 Abstract    The thylakoid differentiation in the endosymbiotic cyanelle Cyanocyta korschikoffiana depends on the developmental stage o f the whole symbiotic association Cyanophora-Cyanocyta. D uring culturing under perm anent light the intrinsic or extrinsic location and the am ount o f the chlorophyll-protein complexes and of the phycobilines in the thylakoids change markedly. D uring this m odification o f the thylakoids the reaction centers of phytosystem I and II are more and more protected by other proteins. Moreover the am ount of phycobilisomes increases in relation to the am ount o f the chlorophyll-protein complexes. The energy transfer becomes more and more efficient. All these aspects show the typical behaviour of a mass culture of a free-living blue-green alga and imply th at Cyanocyta korschikoffiana is a symbiotic cyanelle much more than a chloroplast-like organelle. 
  Reference    Z. Naturforsch. 37c, 75—80 (1982); received October 211981 
  Published    1982 
  Keywords    Thylakoid D ifferentiation, Endocyanelles, Cyanophora paradoxa, Energy Transfer, Phycobiline 
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 TEI-XML for    default:Reihe_C/37/ZNC-1982-37c-0075.pdf 
 Identifier    ZNC-1982-37c-0075 
 Volume    37 
4Author    M. Argarete, N. Eu-, M. Üller, H. Ainfried, E. A. SchenkRequires cookie*
 Title    Der Einfluß von Cycloheximid und Chloramphenicol auf die Biosynthese der Photosynthese-Pigmente in Cyanophora paradoxa Korsch. HI. Chlorophyll a und Phycochromoproteide Chlorophyll a and Phycochrom oproteids  
 Abstract    The Influence o f Cyclohexim ide and C hloram phenicol on the B iosynthesis o f the P hotosynthetic P igm ents in Cyanophora paradoxa. III. The inhibition effects o f CHI and CA on the biosynthesis o f the tetrapyrrolpigments were measured with two methods (in vivo VIS-spectroscopy, for chlorophyll (Chi) and the phyco­ chromoproteids, 14C incorporation only for Chi). In the case o f the Chl-biosynthesis both methods show the sam e results: a) In vivo VIS-spectroscopy demonstrates that the inhibition effect o f CA manifests faster than that o f CHI, b) during the 14C incorporation into Chi chloramphenicol (CA) inhibits more than cyclohexim ide (CHI) in contrary to the behaviour o f chloroplasts. It seems that the CHI caused decrease o f l4C incorporation into Chi can be ascribed to the decreased photosynthesis. The influence o f the antibiotics o f the phycochrom o­ proteids is similar to that observed for chlorophyll. It is remarkable that under the influence o f CHI the phycochromoproteid biosynthesis is significantly better than under CA influence, although CHI damages the consortium more than CA. That can be interpreted, as for chlorophyll, with a more endocytobiont coded phycochrom oproteid synthesis. 
  Reference    Z. Naturforsch. 38c, 990—9 (1983); received July 19 1983 
  Published    1983 
  Keywords    Cyanophora paradoxa, Biosynthesis, Chlorophyll, Phycocyanin, Allophycocyanin, C yclohexim ide, Chloramphenicol 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0990.pdf 
 Identifier    ZNC-1983-38c-0990 
 Volume    38