INHIBITION OF K+ UPTAKE, H+ EXTRUSION AND K+-ACTIVATED ATPASE, AND DEPOLARIZATION OF TRANSMEMBRANE POTENTIAL IN PLANT-TISSUES TREATED WITH CERCOSPORA-BETICOLA TOXIN

被引：27

作者：

MACRI, F

VIANELLO, A

机构：

[1] Centre for the Study of Phytopathological Problems of Sugar Beet, C.N.R., Institute of Plant Pathology

来源：

PHYSIOLOGICAL PLANT PATHOLOGY | 1979年 / 15卷 / 02期

关键词：

D O I：

10.1016/0048-4059(79)90064-X

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Cercospora beticola toxin (CBT) induced a rapid loss of electrolytes, β-cyanin and amino acids from plant tissues. Treatment with CBT inhibited potassium uptake in corn roots, whereas it did not affect K+ transport in activated discs of potato and red beet. The toxin was active in inhibiting H+ extrusion, root elongation, ATPase activity of plasmalemma-enriched fractions and in depolarizing transmembrane potentials of corn roots. K+-dependent ATPase was inhibited in vitro by about 75% by CBT. © 1979.

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页码：161 / 170

页数：10

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