Effect of jasmonic acid on Ca+2 transport through the plasmalemma of potato tuber cells

Ladyzhenskaia, E.P.; Korableva, N.P.

Prikladnaia Biokhimiia i Mikrobiologiia 44(6): 709-713

2008


ISSN/ISBN: 0555-1099
PMID: 19145980
Document Number: 623776
The rate of Ca2+ accumulation in plasmalemma vesicles isolated from quiescent and sprouting potato (Solanum tuberosum L.) tubers and the effect of 10(-5) - 10(-10) M jasmonic acid on the accumulation of Ca+2 in plasmalemma vesicles and its efflux were studied. It was found that potato tuber plasmalemma contains a Ca+2, Mg+2-ATPase whose activity decreases upon the transition from forced quiescence to growth. The direction of the effect ofjasmonic acid on Ca+2, Mg+2-ATPase (stimulation or suppression) depends on the physiological state of tubers and the phytohormone concentration.

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