Search Results - "Czygan, F.C"

Photoinhibition and zeaxanthin formation in intact leaves. A possible role of the xanthophyll cycle in the dissipation of excess light energy by Demmig, B, Winter, K, Kruger, A, Czygan, F.C

“…Comparative studies of chlorophyll a fluorescence, measured with a pulse amplitude modulated fluorometer, and of the pigment composition of leaves, suggest a…”
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Identification of Benzodiazepines in Artemisia dracunculus and Solanum tuberosum Rationalizing Their Endogenous Formation in Plant Tissue by Kavvadias, Dominique, Abou-Mandour, Ahmed A., Czygan, Franz-C., Beckmann, Helmut, Sand, Philipp, Riederer, Peter, Schreier, Peter

“…Sterile cultivated plant cell tissues and cell regenerates of several species were tested for their binding affinity to the central human benzodiazepine…”
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Zeaxanthin and the heat dissipation of excess light energy in Nerium oleander exposed to a combination of high light and water stress by Demmig, B, Winter, K, Kruger, A, Czygan, F.C

“…Upon termination of watering of plants of Nerium oleander exposed to high light, photochemical efficiency became reduced as leaf water content decreased…”
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Inhibition of zeaxanthin formation and of rapid changes in radiationless energy dissipation by dithiothreitol in spinach leaves and chloroplasts by Demmig-Adams, Barbara, Adams, William W., Heber, Ulrich, Neimanis, Spidola, Winter, Klaus, Almuth Krüger, Franz-Christian Czygan, Bilger, Wolfgang, Björkman, Olle

“…Dithiothreitol was used to obtain evidence for a causal relationship between zeaxanthin and the dissipation of excess excitation energy in the photochemical…”
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Light response of CO2 assimilation, dissipation of excess excitation energy, and zeaxanthin content of sun and shade leaves by Demmig-Adams, B. (University of Colorado, Boulder, CO), Winter, K, Kruger, A, Czygan, F.C

“…Intact attached sun leaves of Helianthus annuus and shade leaves of Monstera deliciosa and Hedera helix were used to obtain light response curves of CO2…”
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Variation in essential oil composition and chiral monoterpenes of Achillea millefolium s.l. from Kaliningrad by Orth, M, Czygan, F.C, Dedkov, V.P

“…Five clones of the Achillea millefolium-"complex" from different sites at Kaliningrad were cultivated in the Botanical Garden of Wurzburg to investigate the…”
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Zeaxanthin synthesis, energy dissipation, and photoprotection of photosystem II at chilling temperatures by Demmig-Adams, B. (University of Colorado, Boulder, CO), Winter, K, Kruger, A, Czygan, F.C

“…When leaves of a mangrove, Rhizophora mangle, were exposed to an excess of light at chilling temperatures, synthesis of zeaxanthin through violaxanthin…”
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Alkaloid variation in Genista lobelii s.l. (Fabaceae) by Kirch, J, Veit, M, Watzig, H, Greinwald, R, Czygan, F.C

“…The alkaloid patterns of green stems and leaves from Genista loeblii and G. salzmannii were studied by capillary gas chromatography. Sparteine, lupanine,…”
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Zeaxanthin and the induction and relaxation kinetics of the dissipation of excess excitation energy in leaves in 2% O2, 0% CO2 by DEMMIG-ADAMS, B, WINTER, K, KRÜGER, A, CZYGAN, F.-C

“…The relationship between the carotenoid zeaxanthin, formed by violaxanthin de-epoxidation, and nonphotochemical fluorescence quenching in the light was…”
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Line-scatter plots in chemotaxonomy of Genista L. section Spartioides Spach in Western Europe by Rensen, I. van, Veit, M, Rohner-van Rensen, U, Canto, P, Vogt, H, Greinwald, R, Czygan, F.C

“…Isoflavone patterns of Genista species from the section Spartioides in west Europe were reported. Orobol-8-C-glucoside, isoprunetin-7-O-glucoside,…”
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role of medicinal plants as an important part in modern medicine by Czygan, F.C

“…Approximately 40% of medicines in Middle European and US pharmacies and drugstores are of biogenic stock: for example antibiotics from bacteria and fungi, sera…”
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Differences in the susceptibility to light stress in two lichens forming a phycosymbiodeme, one partner possessing and one lacking the xanthophyll cycle by Demmig-Adams, B, Adams, W.W. III, Green, T.G.A, Czygan, F.C, Lange, O.L

“…The effect of high light levels on the two partners of a Pseudocyphellaria phycosymbiodeme (Pseudocyphellaria rufovirescens, with a green phycobiont, and P…”
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Alkaloids of Templetonia incana by Greinwald, Roland, Ross, James H., Witte, Ludger, Czygan, F.-C.

“…The alkaloid pattern of Templetonia incana has been investigated to provide data for comparison with other species of the genus Templetonia. The α-pyridone…”
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The alkaloid pattern of Plagiocarpus axillaris (Fabaceae: Brongniartieae) by Greinwald, Roland, Ross, James H., Witte, Ludger, Czygan, F.-C.

“…As part of a detailed survey of alkaloids in the tribe Brongniartieae, the alkaloid pattern of the monotypic genus Plagiocarpus has been investigated. All…”
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analysis of needle yellowing in healthy and chlorotic Norway spruce (Picea abies) in a forest decline area of the Fichtelgebirge (N.E. Bavaria). I. Annual time-course changes in chloroplast pigments for five different needle age classes by Kostner, B, Czygan, F.C, Lange, O.L

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An analysis of needle yellowing in healthy and chlorotic Norway spruce (Picea abies) in a forest decline area of the Fichtelgebirge (N.E. Bavaria) by Koestner, B. (Wuerzburg Univ. (Germany, F.R.). Inst. fuer Botanik und Pharmazeutische Biologie), Czygan, F.C, Lange, O.L

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The influence of phytohormones on growth, organ differentiation and fructan production in callus of Symphytum officinale L by HAASS, D, ABOU-MANDOUR, A. A, BLASCHEK, W, FRANZ, G, CZYGAN, F. C

“…Callus derived from Symphytum officinale L. regenerants was cultured in the presence of various phytohormones. The growth rate of callus was stimulated by all…”
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Carotenoids in the outer cell-wall layer of Scenedesmus (Chlorophyceae) by Burczyk, J, Szkawran, H, Zontek, I, Czygan, F.C

“…Scenedesmus obliquus, strain 633, which synthesizes ketocarotenoids and sporopollenin, also forms pink-red-colored cell walls. Both the cell walls left over…”
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Untersuchungen an Kalluskulturen von Melissa officinalis L. II: Über wasserdampfflüchtige Diterpenkohlenwasserstoffe in nicht differenzierten Oberflächenkulturen by KOCH-HEITZMANN, I, SCHULTZE, W, CZYGAN, F.C

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Ein verbessertes Verfahren zur Isolierung und quantitativen Bestimmung von Vincaleukoblastin aus intakten Pflanzen und Gewebekulturen von Catharanthus roseus G. Don by Hofmann, W, Kubeczka, K.H, Czygan, F.C

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