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Membranes and Bioenergetics

Localized Patch Clamping of Plasma Membrane of a Polarized Plant Cell ¹

Laser Microsurgery of the Fucus spiralis Rhizoid Cell Wall

Marine Biological Association, Plymouth, United Kingdom PL1 2PB

We used an ultraviolet laser to rupture a small region of cell wall of a polarized Fucus spiralis rhizoid cell and gained localized access to the plasma membrane at the growing apex. Careful control of cell turgor enabled a small portion of plasma membrane-bound cytoplasm to be exposed. Gigaohm seals allowing single-channel recordings were obtained with a high success rate using this method with conventional patch clamp techniques.

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