Search Results - (Author, Cooperation:K. Winter)
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1Latest Papers from Table of Contents or Articles in PressM. J. West-Eberhard ; J. A. Smith ; K. Winter
American Association for the Advancement of Science (AAAS)
Published 2011Staff ViewPublication Date: 2011-04-16Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Carbon Dioxide/metabolism ; Chloroplasts/metabolism ; Decarboxylation ; *Evolution, Molecular ; Gene Expression Regulation, Plant ; Genes, Plant ; Malates/metabolism ; Mutation ; Phenotype ; Phosphoenolpyruvate Carboxylase/metabolism ; *Photosynthesis/genetics ; Plant Leaves/metabolism ; Plant Stomata/physiology ; Plants/genetics/*metabolism ; Regulatory Elements, Transcriptional ; Ribulose-Bisphosphate Carboxylase/metabolism ; Stress, PhysiologicalPublished by: -
2Latest Papers from Table of Contents or Articles in PressG. Corder ; S. Doolen ; R. R. Donahue ; M. K. Winter ; B. L. Jutras ; Y. He ; X. Hu ; J. S. Wieskopf ; J. S. Mogil ; D. R. Storm ; Z. J. Wang ; K. E. McCarson ; B. K. Taylor
American Association for the Advancement of Science (AAAS)
Published 2013Staff ViewPublication Date: 2013-09-21Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Acute Pain/metabolism ; Adenosine Monophosphate/metabolism ; Adenylyl Cyclases/metabolism ; Animals ; Chronic Pain/*metabolism ; Disease Models, Animal ; Freund's Adjuvant/pharmacology ; Hyperalgesia/chemically induced/*metabolism ; Isoflurane/pharmacology ; Male ; Mice ; Naltrexone/analogs & derivatives/pharmacology ; Nociceptive Pain/*metabolism ; Receptors, N-Methyl-D-Aspartate/metabolism ; Receptors, Opioid, mu/agonists/antagonists & inhibitors/*metabolism ; Spinal Cord/drug effects/metabolism ; Substance Withdrawal Syndrome/metabolismPublished by: -
3FIS Bildung LiteraturdatenbankStaff View
Type of Medium: articlePublication Date: 1984Keywords: Interview ; Sonderpädagogik ; SonderschuleIn: Die Sonderschule, Bd. 29 (1984) H. 6, S. 326-329, 0323-4592Language: German -
4Latest Papers from Table of Contents or Articles in PressNguyen, J., Newton, M. S., Strong, M., Pacesa, M., Cao, B., Winter, K. A., Dutton-Regester, K., Kingsley, L. J.
American Association for the Advancement of Science (AAAS)
Published 2018Staff ViewPublication Date: 2018-01-12Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyGeosciencesComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
5Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2018-08-09Publisher: Royal SocietyElectronic ISSN: 2054-5703Topics: Natural Sciences in GeneralKeywords: biomechanicsPublished by: -
6Articles: DFG German National LicensesStaff View
ISSN: 1365-3040Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: BiologyNotes: Crassulacean acid metabolism (CAM), an advanced photosynthetic pathway conferring water conservation to plants in arid habitats, has enigmatically been reported in some species restricted to extremely wet tropical forests. Of these, epiphytic Bromeliaceae may possess absorbent foliar trichomes that hinder gas-exchange when wetted, imposing further limitations on carbon dioxide (CO2) uptake. The hypothesis that the metabolic plasticity inherent to CAM confers an ecological advantage over conventional C3 plants, when constant rainfall and mist might inhibit gas-exchange was investigated. Gas-exchange, fluorometry and organic acid and mineral nutrient contents were compared for the bromeliads Aechmea dactylina (CAM) and Werauhia capitata (C3) in situ at the Cerro Jefe cloud forest, Panama (annual rainfall 〉 4 m). Daily carbon gain and photosynthetic nutrient use efficiencies were consistently higher for A. dactylina, due to a greater CO2 uptake period, recycling of CO2 from respiration and a dynamic response of CO2 uptake to wetting of leaf surfaces. During the dry season CAM also had water conserving and photoprotective roles. A paucity of CAM species at Cerro Jefe suggests a recent radiation of this photosynthetic pathway into the wet cloud forest, with CAM extending diversity in form and function for epiphytes.Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesLOVELOCK, C. E. ; VIRGO, A. ; POPP, M. ; WINTER, K.
Oxford, UK : Blackwell Publishing Ltd
Published 1999Staff ViewISSN: 1365-3040Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: BiologyNotes: Mature trees have already experienced substantial increases in CO2 concentrations during their lifetimes, and will experience continuing increases in the future. Small open-top chambers were used to enclose branchlets that were at a height of between 20 and 25 m in the canopy of the tree species Luehea seemannii Tr. & Planch. in a tropical forest in Panamá. Elevated concentrations of CO2 increased the rate of photosynthetic carbon fixation and decreased stomatal conductance of leaves, but did not influence the growth of leaf area per chamber, the production of flower buds and fruit nor the concentration of nonstructural carbohydrates within leaves. The production of flower buds was highly correlated with the leaf area produced in the second flush of leaves, indicating that the branchlets of mature trees of Luehea seemannii are autonomous to a considerable extent. Elevated levels of CO2 did increase the concentration of nonstructural carbohydrates in woody stem tissue. Elevated CO2 concentration also they increased the ratio of leaf area to total biomass of branchlets, and tended to reduce individual fruit weight. These data suggest that the biomass allocation patterns of mature trees may change under future elevated levels of CO2. Although there were no effects on growth during the experiment, the possibility of increased growth in the season following CO2 enrichment due to increased carbohydrate concentrations in woody tissue cannot be excluded.Type of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesKrause, G. H. ; Koroleva, O. Y. ; Dalling, J. W. ; Winter, K.
Oxford, UK : Blackwell Science Ltd
Published 2001Staff ViewISSN: 1365-3040Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: BiologyNotes: Acclimation to periodic high-light stress was studied in tree seedlings from a neotropical forest. Seedlings of several pioneer and late-succession species were cultivated under simulated tree-fall gap conditions; they were placed under frames covered with shade cloth with apertures of different widths that permitted defined periods of daily leaf exposure to direct sunlight. During direct sun exposure, all plants exhibited a marked reversible decline in potential photosystem II (PSII) efficiency, determined by means of the ratio of variable to maximum Chl a fluorescence (Fv/Fm). The decline in Fv/Fm under full sunlight was much stronger in late-succession than in pioneer species. For each gap size, all species exhibited a similar degree of de-epoxidation of violaxanthin in direct sunlight and similar pool sizes of xanthophyll cycle pigments. Pool sizes increased with increasing gap size. Pioneer plants possessed high levels of β-carotene that also increased with gap size, whereas α-carotene decreased. In contrast to late-succession plants, pioneer plants were capable of adjusting their Chl a/b ratio to a high value in wide gaps. The content of extractable UV-B-absorbing compounds was highest in the plants acclimated to large gaps and did not depend on the successional status of the plants. The results demonstrate a better performance of pioneer species under high-light conditions as compared with late-succession plants, manifested by reduced photoinhibition of PSII in pioneer species. This was not related to increased pool size and turnover of xanthophyll cycle pigments, nor to higher contents of UV-B-absorbing substances. High β-carotene levels and increased Chl a/b ratios, i.e. reduced size of the Chl a and b binding antennae, may contribute to photoprotection in pioneer species.Type of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesStaff View
ISSN: 1365-3040Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: BiologyNotes: Sun and shade leaves of several plant species from a neotropical forest were exposed to excessive light to evaluate the responses of photosystem I in comparison to those of photosystem II. Potential photosystem I activity was determined by means of the maximum P700 absorbance change around 810 nm (ΔA810max) in saturating far-red light. Leaf absorbance changes in dependence of increasing far-red light fluence rates were used to calculate a ‘saturation constant’, Ks, representing the far-red irradiance at which half of the maximal absorbance change (ΔA810max/2) was reached in the steady state. Photosystem II efficiency was assessed by measuring the ratio of variable to maximum chlorophyll fluorescence, Fv/Fm, in dark-adapted leaf samples. Strong illumination caused a high degree of photo-inhibition of photosystem II in all leaves, particularly in shade leaves. Exposure to 1800–2000 μmol photons m−2 s−1 for 75 min did not substantially affect the potential activity of photosystem I in all species tested, but caused a more than 40-fold increase of Ks in shade leaves, and a three-fold increase of Ks in sun leaves. The increase in Ks was reversible during recovery under low light, and the recovery process was much faster in sun than in shade leaves. The novel effect of high-light stress on the light saturation of P700 oxidation described here may represent a complex reversible mechanism within photosystem I that regulates light-energy dissipation and thus protects photosystem I from photo-oxidative damage. Moreover, we show that under high-light stress a high proportion of P700 accumulates in the oxidized state, P700+. Presumably, conversion of excitation energy to heat by this cation radical may efficiently contribute to photoprotection.Type of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesStaff View
ISSN: 0920-5632Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: PhysicsType of Medium: Electronic ResourceURL: -
11Articles: DFG German National LicensesStaff View
ISSN: 0005-7967Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: MedicinePsychologyType of Medium: Electronic ResourceURL: -
12Articles: DFG German National LicensesStaff View
ISSN: 0016-7061Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: GeosciencesAgriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionType of Medium: Electronic ResourceURL: -
13Articles: DFG German National LicensesStaff View
ISSN: 0038-0717Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyGeosciencesAgriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionType of Medium: Electronic ResourceURL: -
14Articles: DFG German National LicensesStaff View
ISSN: 0040-4020Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: -
15Articles: DFG German National LicensesFriend, B. ; King, A. ; Kiss, D. ; Schmidt-Parzefall, W. ; Winter, K. ; Niebergall, F. ; Wilmsen, W.
Amsterdam : ElsevierStaff ViewISSN: 0029-554XSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Energy, Environment Protection, Nuclear Power EngineeringPhysicsType of Medium: Electronic ResourceURL: -
16Articles: DFG German National LicensesStaff View
ISSN: 0029-554XSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Energy, Environment Protection, Nuclear Power EngineeringPhysicsType of Medium: Electronic ResourceURL: -
17Articles: DFG German National LicensesAubert, J.J. ; Niebergall, F. ; Willitts, T.R. ; Winter, K. ; de Bouard, X. ; Lepeltier, V. ; Massonnet, L. ; Pessard, H. ; Regler, M. ; Steuer, M. ; Vivargent, M. ; Yvert, M. ; Bartl, W.
Amsterdam : ElsevierStaff ViewISSN: 0029-554XSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Energy, Environment Protection, Nuclear Power EngineeringPhysicsType of Medium: Electronic ResourceURL: -
18Articles: DFG German National LicensesStaff View
ISSN: 0031-9422Keywords: Ascomycetes ; Aspergillaceae ; Penicillium cyclopium ; benzodiazepine alkaloids ; biosynthesis ; cyclopeptine ; cyclopeptine dehydrogenase ; dehydrocyclopeptine. ; stereochemistrySource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyChemistry and PharmacologyType of Medium: Electronic ResourceURL: -
19Articles: DFG German National LicensesDekkers, D. ; Jordan, B. ; Mermod, R. ; Ting, C.C. ; Weber, G. ; Willitts, T.R. ; Winter, K. ; De Bouard, X. ; Vivargent, M.
Amsterdam : ElsevierStaff ViewISSN: 0031-9163Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: PhysicsType of Medium: Electronic ResourceURL: -
20Articles: DFG German National LicensesDe Bouard, X. ; Dekkers, D. ; Jordan, B. ; Mermod, R. ; Willitts, T.R. ; Winter, K. ; Scharff, P. ; Valentin, L. ; Bott-Bodenhausen, M. ; Vivargent, M.
Amsterdam : ElsevierStaff ViewISSN: 0031-9163Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: PhysicsType of Medium: Electronic ResourceURL: