| Literature DB >> 12226392 |
M. M. Atkinson1, S. L. Midland, J. J. Sims, N. T. Keen.
Abstract
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.Entities:
Year: 1996 PMID: 12226392 PMCID: PMC157949 DOI: 10.1104/pp.112.1.297
Source DB: PubMed Journal: Plant Physiol ISSN: 0032-0889 Impact factor: 8.340