A mechanosensitive channel in whole cells and in membrane patches of the fungus Uromyces.

Abstract

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.

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@article{Zhou1991AMC, title={A mechanosensitive channel in whole cells and in membrane patches of the fungus Uromyces.}, author={Xin-liang Zhou and Marco Aur{\'e}lio Stumpf and Harvey C. Hoch and Ching Kung}, journal={Science}, year={1991}, volume={253 5026}, pages={1415-7} }