Melafen effect on ATP-dependent accumulation of calcium in plasma membrane vesicles from cells of potato tubers |
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| Authors: | E P Ladyzhenskaya N P Korableva |
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| Institution: | (1) Department of Medicine and the Moores Cancer Center, University of California, San Diego, La Jolla, CA, USA |
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| Abstract: | Synthetic growth regulator melafen (10−5–10−10 M) was tested for aneffect on the Ca2+ accumulation in plasma membrane vesicles (PMVs) isolated from potato Solanum tuberosum L. tubers at forced rest and sprouting. Melafen proved to regulate the Ca2+ accumulation in PMVs by changing the activity of Ca2+, Mg2+-ATPase of the plasma membrane, while no effect was observed with respect to Ca2+ outflow from vesicles. The melafen effect on Ca2+, Mg2+-ATPase activity depended on the physiological condition of tubers and the melafen concentration. |
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