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Effects of quaternary ammonium salts on membrane potential and electric conductance in internodal cells of Nitettopsis obtusa
Author(s) -
Trela Ze,
Janas Tadeusz,
Witek Stanistaw,
Przestalski Stanislaw
Publication year - 1990
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1990.tb08714.x
Subject(s) - ammonium , chemistry , membrane potential , conductance , glycine , hyperpolarization (physics) , membrane , alkyl , vacuole , biophysics , medicinal chemistry , biochemistry , stereochemistry , organic chemistry , amino acid , biology , cytoplasm , mathematics , combinatorics , nuclear magnetic resonance spectroscopy
Effects of amphiphilic derivatives of glycine esters of the general formula (CH 3 ) 3 N + CH 2 COOC n H 2n+1 Cl‐ (n = 10, 12, 14, 16) on membrane potential and conductance in internodal cells of the alga Nitellopsis obtusa were studied. The compounds decreased the potential difference between vacuole and external medium and increased the electric conductance. The effects depended on the length of the alkyl chain (n) and the concentration of these quaternary ammonium salts. Light‐induced hyperpolarization was suppressed by the salts. We suggest that the ammonium salts inhibit the electrogenic proton pump in the plasmalemma and enhance the passive efflux of Cl‐ from the algal cell.