THE PHYTOTOXIN SYRINGOMYCIN ELICITS CA2+-DEPENDENT CALLOSE SYNTHESIS IN SUSPENSION-CULTURED CELLS OF CATHARANTHUS-ROSEUS

被引：28

作者：

KAUSS, H ^{[1
]}

WALDMANN, T ^{[1
]}

JEBLICK, W ^{[1
]}

TAKEMOTO, JY ^{[1
]}

机构：

[1] UTAH STATE UNIV,DEPT BIOL,LOGAN,UT 84322

来源：

PHYSIOLOGIA PLANTARUM | 1991年 / 81卷 / 01期

关键词：

BACTERIAL PHYTOTOXIN; CA2+ UPTAKE; CALLOSE ELICITOR; PATHOGEN DEFENSE; SYRINGOMYCIN;

D O I：

10.1111/j.1399-3054.1991.tb01725.x

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Deposition of the 1,3-beta-glucan callose onto the cell wall represents one of the defence reactions of plants against pathogens. This process can be induced in suspension cells of Catharanthus roseus by subtoxic concentrations of the bacterial phytotoxin synringomycin and is associated with a slight increase in Ca2+ uptake and some K+ release. Under these conditions callose formation can be prevented by complexing external Ca2+, indicating that some Ca2+ uptake is essential as a signal. However, higher syringomycin concentrations elicit increased Ca2+ uptake without increasing callose formation, although the potential for callose synthesis is not exhausted - as shown using digitonin as an additional elicitor. These results suggest that, super-imposed on Ca2+, another, yet unknown signal is also involved in the regulation of callose synthesis.

引用

页码：134 / 138

页数：5

共 17 条

[1] INVOLVEMENT OF PLASMA-MEMBRANE CALCIUM INFLUX IN BACTERIAL INDUCTION OF THE K+/H+ AND HYPERSENSITIVE RESPONSES IN TOBACCO [J].