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'Pigmentation' in keywords Facet   section ZfN Section C  [X]
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1985 (1)
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1Author    Z. NaturforschRequires cookie*
 Title    On the Pigmentation of the Pollen of  
 Abstract    N o th o fa ­ g u s a n ta rc tic a (Forst.) Oerst. (Fagaceae) E ckhard W ollenw eber Extraction o f pollen o f N othofagus antarctica with acid hydrolysis yields kaem pferol, quercetin, the rare flavonol sexangularetin, and naringenin. The tetrahydroxy-chalcone isosalipurpol is shown for the first tim e to occur in such high amount as free aglycone in mature pollen; it yields na­ ringenin in usual extraction procedures. The bright yellow coloration o f the pollen is due to the presence o f isosalipur­ pol and sexangularetin. 
  Reference    Z. Naturforsch. 34c, 1289 (1979); received Septem ber 4 1979 
  Published    1979 
  Keywords    Nothofagus antarctica, Fagaceae, Pollen, Pigmentation, Rare Flavonoids 
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 TEI-XML for    default:Reihe_C/34/ZNC-1979-34c-1289_n.pdf 
 Identifier    ZNC-1979-34c-1289_n 
 Volume    34 
2Author    Rolf Wiermann, Eckhard Wollenweber, Cornelia RehseRequires cookie*
 Title    "Yellow Flavonols" as Components of Pollen Pigmentation  
  Reference    Z. Naturforsch. 36c, 204—2 (1981); received December 5 1980 
  Published    1981 
  Keywords    Paeonia, Rumex, Spinacea oleracea, Pollen, Pigmentation, "Yellow Flavonols" 
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 TEI-XML for    default:Reihe_C/36/ZNC-1981-36c-0204.pdf 
 Identifier    ZNC-1981-36c-0204 
 Volume    36 
3Author    Günter Datz, GünterD. ÖhlerRequires cookie*
 Title    Light-Dependent Changes in the Lipid and Fatty Acid Composition of Phycocyanin-Free Photosynthetic Lamellae of Synechococcus  
 Abstract    The growth o f Synechococcus at different intensities o f white and red light caused changes in the pigment composition. The ratio of chlorophyll a to phycocyanin varied from 1:8,2 in LWLI-grown cells to 1:1,4 in cells grown at HW LI and to 1:15,7 in cultures exposed to HRLI. Acyl lipids were quantitatively determ ined and fatty acids o f the individual lipid classes analysed by GLC. Phycocyanin-free photosynthetic lam ellae were obtained by fractional centrifugation. No variation was found in the acyl lipid composition of the m em brane preparations. These all contained M G D G , D G D G , SQDG and PG as components. In all the lipids investigated, palmitic, hexadecenoic and octadecenoic acids m ade up to more than 90% of total fatty acids. The pattern Of these "m^jor components w ithin the lipids from the different cultures depended on the light used. N o large differences were detected between zones obtained from LWLI and HRLI isolated membranes, whereas density gradient centrifugation of those from HWLI-grown cells resulted in a completely different pattern o f bands. The variations in lipid and fatty acid composition are discussed with respect to changes observed in lipid composition of whole cells and the results reported on tem perature dependent shifts in lipid fluidity in cyanobacteria. 
  Reference    Z. Naturforsch. 36c, 856—862 (1981); recieved May 25 1981 
  Published    1981 
  Keywords    Pigmentation, Phycocyanin-Free Lamellae, Lipid and Fatty Acid Composition, Synechococcus 
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 TEI-XML for    default:Reihe_C/36/ZNC-1981-36c-0856.pdf 
 Identifier    ZNC-1981-36c-0856 
 Volume    36 
4Author    Günter Döhler, Jean-Claude Leclerc, M.Requires cookie*
 Title    Photosynthetic Adaptation in Synechococcus Cells  
 Abstract    The cyanobacterium Synechococcus (Anacystis nidulans, strain L 1401-1) grown under different light conditions showed variations in pigmentation. Ratios of photosynthetic pigments and the effect on quantum requirement and oxygen evolution were studied. An increase in the ratio of chlorophyll a forms with absorption maxima in the far red regime to total chlorophyll a forms was observed in cells grown in strong white light. The quantum efficiency of orange light (637 nm) -absorbed by phycocyanin — was higher after growth of Synechococcus in white than 
  Reference    Z. Naturforsch. 37c, 1075—1080 (1982); received August 12 1982 
  Published    1982 
  Keywords    Pigmentation, Quantum Requirement, Absorption Spectra, Oxygen Evolution, P 700, Synecho­ coccus 
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 TEI-XML for    default:Reihe_C/37/ZNC-1982-37c-1075.pdf 
 Identifier    ZNC-1982-37c-1075 
 Volume    37 
5Author    Günter Döhler, Alfred MärteRequires cookie*
 Title    Effect of Light Intensity on Photosynthetic 14C 0 2 Fixation of A nabaena flos -aquae  
 Abstract    The cyanobacterium Anabaena flos-aquae (strain 1444) grown at different intensities o f white light (900. 3500 and 30000 lux) showed changes in the content and com position o f the pigments. Phycocyanin was more affected by high light conditions during growth than chlorophyll a. In comparison to in low white light grown cyanobacteria num ber o f phycobilisom es and thylakoids decreased under strong light. A dim inution o f 14C 0 2 fixation, total am ino acid content, glutam ic acid and glutamine pools was found in strong white light grown cells. Under these conditions the majority o f l4C-labelling was measured in sugar phosphates. After pressure treatment a marked increase o f 14C-incorporation into am ino acids could be obtained. Results were discussed with reference to regulation o f buoyancy in Anabaena flos-aquae. 
  Reference    Z. Naturforsch. 40c, 122 (1985); received August lO/O ctober 19 1984 
  Published    1985 
  Keywords    Pigmentation, Photosynthetic C 0 2 Fixation, Am ino Acids, G as Vacuoles, Anabaena flos-aquae 
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 TEI-XML for    default:Reihe_C/40/ZNC-1985-40c-0122.pdf 
 Identifier    ZNC-1985-40c-0122 
 Volume    40