Search Results - (Author, Cooperation:D. M. Kramer)

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  1. 1
    Staff View
    Publication Date:
    2011-05-14
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Biomass ; *Electricity ; Electrolysis ; Hydrogen ; *Photosynthesis ; Plant Development ; Plants/metabolism ; *Solar Energy ; Sunlight ; Synthetic Biology
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    AVENSON, T. J. ; KANAZAWA, A. ; CRUZ, J. A. ; TAKIZAWA, K. ; ETTINGER, W. E. ; KRAMER, D. M.

    Oxford, UK : Blackwell Science Ltd
    Published 2005
    Staff View
    ISSN:
    1365-3040
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Biology
    Notes:
    The formation of trans-thylakoid proton motive force (pmf) is coupled to light-driven electron transfer and both powers the synthesis of ATP and acts as a signal for initiating antenna regulation. This key intermediate has been difficult to study because of its ephemeral and variable qualities. This review covers recent efforts to probe pmf in vivo as well as efforts to address one of the key questions in photosynthesis: How does the photosynthetic machinery achieve sufficient flexibility to meet the energetic and regulatory needs of the plant in a varying environment? It is concluded that pmf plays a central role in these flexibility mechanisms.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1365-3040.2005.01294.x

    Articles: DFG German National Licenses
  3. 3
    WISE, R. R. ; FREDERICK, J. R. ; ALM, D. M. ; KRAMER, D. M. ; HESKETH, J. D. ; CROFTS, A. R. ; ORT, D. R.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1992
    Staff View
    ISSN:
    1365-3040
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Biology
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1365-3040.1992.tb01020.x

    Articles: DFG German National Licenses
  4. 4
    WISE, R. R. ; FREDERICK, J. R. ; ALM, D. M. ; KRAMER, D. M. ; HESKETH, J. D. ; CROFTS, A. R. ; ORT, D. R.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1990
    Staff View
    ISSN:
    1365-3040
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Biology
    Notes:
    Abstract. The diurnal cycling of leaf water potential (Ψleaf) in field-grown sunflower (Helianthus annuus) was used to investigate the cause of water deficitinduced limitation of net photosynthesis. Daily midafternoon decreases in Ψleaf of up to 1.5 MPa and in net photosynthesis of up to 50% were typical for irrigated sunflower during seed filling. These midafternoon values were lowered an additional 0.6 to 0.8 MPa by prolonged drought treatment. There was a nearly linear relationship between the decline in net photosynthesis and reductions in leaf conductance over the course of the day. Thus, it was unexpected to find that the low, midafternoon rates of photosynthesis were associated with the highest intercellular CO2 concentrations. These and other observations suggest that the daily decline in photosynthesis represents a ‘down regulation’ of the biochemical demand for CO2 that is coordinated with the diurnally developing need to conserve water, thus establishing a balanced limitation of photosynthesis involving both stomatal and non-stomatal factors. There were no indications that either short term (i.e. diurnal declines in Ψleaf) or long term (i.e. drought treatment) water deficits caused any damage or malfunctioning of photosynthesis. Rather, both the daily declines in photosynthesis and the nearly 25% decrease in leaf area induced by prolonged drought appeared to be well-controlled adaptive responses by field-grown sunflower plants to limited water availability.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1365-3040.1990.tb01982.x

    Articles: DFG German National Licenses
  5. 5
    Staff View
    ISSN:
    1432-1920
    Keywords:
    Nuclear magnetic resonance (NMR) ; Zeugmatographic imaging ; Three-dimensional imaging ; Three-dimensional NMR zeugmatography ; NMR Zeugmatography
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Summary A three-dimensional image of a preserved human brain, resolved into cubical 0.03 cm3 volume elements, has been obtained by nuclear magnetic resonance (NMR) zeugmatography, using a twostage reconstruction technique. Intensities in such images represent concentrations of water and other liquids or liquid-like substances. The image has been displayed as computer-generated multiple transverse, coronal and sagittal sections, so as to display most clearly a number of anatomical features. The potential of this technique in physiological research and clinical practice is discussed.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF02100153

    Articles: DFG German National Licenses