Competing patterns of signaling activity in Dictyostelium discoideum

被引：194

作者：

Lee, KJ ^{[1
]}

Cox, EC ^{[1
]}

Goldstein, RE ^{[1
]}

机构：

[1] PRINCETON UNIV,DEPT MOLEC BIOL,PRINCETON,NJ 08544

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.76.1174

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Quantitative experiments are described on spatiotemporal patterns of coherent chemical signaling activity in populations of Dictyostelium discoideum amoebae. We observe competition between spontaneously firing centers and rotating spiral waves that depends strongly on the overall cell density. concentric waves. whereas at high densities the firing centers seen at early times nucleate and are apparently entrained by spiral waves whose cores ultimately serve as aggregation centers. Possible mechanisms for these observations are discussed.

引用

页码：1174 / 1177

页数：4

共 37 条

[1] Spiral competition in three-component excitable media [J].