Stretch-activated ion channels identified in the touch-sensitive structures of carnivorous Droseraceae plants
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منابع مشابه
Stretch activated ion channels in ventricular myocytes.
Patch-clamp recordings from ventricular myocytes of neonatal rats identified ionic channels that open in response to membrane stretch caused by negative pressures (1 to 6 cm Hg) in the electrode. The stretch response, consisting of markedly increased channel opening frequency, was maintained, with some variability, during long (greater than 40 seconds) stretch applications. The channels have a ...
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Mechanosensitive ion channels (MSCs) exist in all cells, but mechanosensitivity is a phenotype not a genotype. Specialized mechanoreceptors such as the hair cells of the cochlea require elaborate mechanical impedance matching to couple the channels to the external stress. In contrast, MSCs in nonspecialized cells appear activated by stress in the bilayer local to the channel--within about three...
متن کاملCharacterization of stretch-activated ion channels in cultured astrocytes.
The presence of a stretch-activated channel in rat cerebellar astrocytes in culture is described. This stretch-sensitive channel is K(+)-selective and its open probability increases with suction following a Boltzmann-like distribution with half activation at 45 mm Hg. Kinetic analysis of the single-channel data indicated that there are two open and two closed states and that the shortest time c...
متن کاملStretch-activated ion channels in growth cones of snail neurons.
Using single-channel recording, we show that neurons contain ion channels sensitive to membrane tension. Neurons isolated from the snail, Lymnaea stagnalis, actively rearborized in culture yielding cell bodies and growth cones suitable for patch clamping. All neurons contained, in both their soma and growth cones (at a density of approximately 1-2 micron-2), stretch-activated channels highly se...
متن کاملStretch-activated current through single ion channels in the abdominal stretch receptor organ of the crayfish
Single stretch-activated ion channels were studied on the soma and primary dendrites of stretch receptor neurons of the crayfish Orconectes limosus. When the membrane of the patch was deformed by applying suction to the pipette, a marked nonlinear increase in single-channel activity could be observed in two types of channels. These were indistinguishable on the basis of their single-channel con...
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ژورنال
عنوان ژورنال: eLife
سال: 2021
ISSN: 2050-084X
DOI: 10.7554/elife.64250