Syringolide 1 triggers Ca2+ influx, K+ efflux, and extracellular alkalization in soybean cells carrying the disease-resistance gene Rpg4

被引：76

作者：

Atkinson, MM

Midland, SL

Sims, JJ

Keen, NT

机构：

[1] UNIV CALIF RIVERSIDE,DEPT PLANT PATHOL,RIVERSIDE,CA 92521

[2] UNIV WISCONSIN,DEPT PLANT PATHOL,MADISON,WI 53706

来源：

PLANT PHYSIOLOGY | 1996年 / 112卷 / 01期

关键词：

D O I：

10.1104/pp.112.1.297

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Alleles of avirulence gene D (avrD) specify the production by bacteria of syringolides that elicit the hypersensitive response in soybean (Glycine max) plants carrying the disease-resistance gene Rpg4, but not rpg4 plants. Syringolide 1 caused extracellular alkalization, K+ efflux, and Ca2+ influx about 30 min after addition to suspension-cultured cells of two Rpg4 cultivars, Harosoy and Flambeau, but not in two rpg4 cultivars, Acme and Merit. All responses were sustained for at least 1.5 h and were inhibited by La3+, which blocks certain Ca2+ channels. These results suggest that syringolide 1 activates a Ca2+ influx-dependent signaling pathway only in Rpg4 soybean cells.

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页码：297 / 302

页数：6

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