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  • 1
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    A mechanosensitive channel in whole cells and in membrane patches of the fungus Uromyces (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-09-20
    Description: Bean leaf stomata provide a topographical signal that induces germlings of the phytopathogen Uromyces appendiculatus to develop specialized infection structures. Protoplasts from germ tubes of this fungus, when examined with patch-clamp electrodes, displayed the activities of a 600-picosiemen mechanosensitive ion channel. This channel passes a variety of cations, including Ca2+, and is blocked by Gd3+ at 50 micromolar. This channel could transduce the membrane stress induced by the leaf topography into an influx of ions, including Ca2+, that may trigger differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhou, X L -- Stumpf, M A -- Hoch, H C -- Kung, C -- New York, N.Y. -- Science. 1991 Sep 20;253(5026):1415-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Biology, University of Wisconsin, Madison 53706.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1716786" target="_blank"〉PubMed〈/a〉
    Keywords: Barium/pharmacology ; Basidiomycota/*physiology/ultrastructure ; Cell Membrane/physiology/ultrastructure ; Gadolinium/pharmacology ; Ion Channels/drug effects/*physiology/ultrastructure ; Mechanoreceptors/physiology ; Membrane Potentials ; Pressure ; Tetraethylammonium ; Tetraethylammonium Compounds/pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Response (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-05-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoch, H C -- Kung, C -- Zhou, X L -- Stumpf, M A -- New York, N.Y. -- Science. 1992 May 29;256(5061):1336.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17736765" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
    Electronic Resource
    Electronic Resource
    Cytoskeletal organization inUromyces urediospore germling apices during appressorium formation (1991)
    Springer
    Protoplasma 165 (1991), S. 37-50 
    Details
    ISSN: 1615-6102
    Keywords: Bean rust fungus ; F-actin ; Laser scanning confocal microscopy ; Microtubules
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Formation of appressoria inUromyces appendiculatus is triggered by external physical features of host stomata as well as artifical surfaces bearing inductive topographies. Microtubule and F-actin microfilament cytoskeletons were examined for their involvement in the process of appressorium formation in this fungus, using laser scanning confocal and electron microscopy. In germlings not stimulated to form appressoria the microtubule and microfilament cytoskeletons were organized as filaments mostly oriented parallel to the longitudinal axis of the cell. Following contact of the germling apex with an inductive topographical signal, e.g., 0.5 μm high ridge, the microtubules and F-actin filaments in the cell apex nearest the substrate appeared randomly oriented. Microtubules farther from the substrate remained oriented parallel to the longitudinal axis of the cell. In later stages of appressorium development, many cytoskeletal elements became oriented parallel to the inductive ridge, especially near the substrate. In regions farther from the substrate in these same cells, the microtubules and microfilaments were arranged in a reticulate pattern. Changes in the distribution and organization of the microtubule and F-actin microfilament cytoskeletons reflect a change in cell function following signal reception for appressorium. The reorientation of the cytoskeleton likely dictates the change in cell morphology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01322275
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    Paper (German National Licenses)
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  • 4
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    Response : Measuring Mechanosensitive Channels in Uromyces (1992)
    American Association for the Advancement of Science
    Details
    Publication Date: 1992-05-29
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science
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