Physics
Swarming ring patterns in bacterial colonies exposed to ultraviolet radiation
Document Type
Article
Abstract
We report a novel morphological transition in a Bacillus subtilis colony initially growing under ambient conditions, after ultraviolet radiation exposure. The bacteria in the central regions of the colonies are observed to migrate towards the colony edge forming a ring during uniform spatial exposure. When the radiation is switched off, the colonies were observed to grow both inward into the evacuated regions as well as outward indicating that the pattern is not formed due to depletion of nutrients at the center of the colony. We also propose a reaction-diffusion model in which waste-limited chemotaxis initiated by the UV radiation leads to the observed phenomenology. © 2001 The American Physical Society.
Publication Title
Physical Review Letters
Publication Date
10-8-2001
Volume
87
Issue
15
First Page
158102
Last Page
158102
ISSN
0031-9007
DOI
10.1103/PhysRevLett.87.158102
Repository Citation
Delprato, Anna M.; Samadani, Azadeh; Kudrolli, A.; and Tsimring, L. S., "Swarming ring patterns in bacterial colonies exposed to ultraviolet radiation" (2001). Physics. 138.
https://commons.clarku.edu/faculty_physics/138
Cross Post Location
Student Publications
