EFFECTS OF (22S,23S)-HOMOBRASSINOLIDE AND RELATED-COMPOUNDS ON MEMBRANE-POTENTIAL AND TRANSPORT OF EGERIA LEAF-CELLS

被引：14

作者：

DAHSE, I

SACK, H

BERNSTEIN, M

PETZOLD, U

MULLER, E

VORBRODT, HM

ADAM, G

机构：

[1] Wissenschaftsbereich Biophysik, Sektion Biologie, Friedrich-Schiller-Univ. Jena, 6900 Jena

[2] Bereich Pflanzenphysiologie M., Sektion Biowissenschaften, Martin-Luther-Univ. Halle/Wittenberg, 4020 Halle/Saale

[3] Inst. F. Biochemie der Pflanzen, Akademie der Wissenschaften der DDR, 4010 Halle

来源：

PLANT PHYSIOLOGY | 1990年 / 93卷 / 03期

关键词：

D O I：

10.1104/pp.93.3.1268

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

(22S,23S)-Homobrassinolide was tested for its effect on the electric cell potential, proton extrusion, ferricyanide reduction, and amino acid and sucrose uptake of leaves of Egeria densa Planchon. In the light, (22S,23S)-homobrassinolide and its derivative, 2α-3α-dihydroxy-5α-stigmast-22-en-6-one, were similar to each other and similar to fusicoccin in causing hyperpolarization and proton extrusion, whereas stigmasterol was less effective. In darkness, the three sterols showed comparable effects. (22S,23S)-Homobrassinolide slightly stimulated ferricyanide reduction and promoted uptake of sucrose and α-aminoisobutyric acid. The results are compatible with a stimulation of an electrogenic proton pump mechanism at the plasmalemma by (22S,23S)-homobrassinolide.

引用

页码：1268 / 1271

页数：4

共 15 条

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