Ladyzhenskaia E P, Korableva N P
Bach Institute of Biochemistry, Russian Academy of Sciences, Leninskii pr. 33, Moscow, 117071 Russia.
Prikl Biokhim Mikrobiol. 2001 Sep-Oct;37(5):612-5.
Effects of the growth regulators epibrassinolide-694 (EB), gibberellic acid (GA), and abscisic acid (ABA) on the ATP-dependent translocation of H+ through the membranes of plasma membrane vesicles of potato (Solanum tuberosum L.) tuber cells were studied. The ATP-dependent accumulation of H+ in the plasma membrane vesicles from dormant tubers was inhibited by EB and ABA and stimulated by GA. After the break of dormancy, the stimulatory effect of GA increased, the inhibitory effect of ABA decreased, and EB stimulated the accumulation of H+ in the vesicles. The data suggest that the plasma membrane H+ ATPase is a target of phytohormones that regulate the dormancy of potato tubers.
研究了生长调节剂表油菜素内酯 - 694（EB）、赤霉素（GA）和脱落酸（ABA）对H⁺通过马铃薯（Solanum tuberosum L.）块茎细胞质膜囊泡膜进行ATP依赖转运的影响。EB和ABA抑制了休眠块茎质膜囊泡中H⁺的ATP依赖积累，而GA则刺激了这种积累。休眠打破后，GA的刺激作用增强，ABA的抑制作用减弱，EB则刺激了囊泡中H⁺的积累。这些数据表明，质膜H⁺ATP酶是调节马铃薯块茎休眠的植物激素的作用靶点。
