Related Experiment Video
Updated: Aug 18, 2026

05:57
Quantifying Bacterial Surface Swarming Motility on Inducer Gradient Plates
Published on: January 5, 2022
Enhanced swarming of bacteria on agar plates containing the surfactant Tween 80
Chen Niu1, Jane D Graves, Felicia O Mokuolu
1Department of Biology, Georgia State University, Atlanta, GA 30303, USA.
Journal of Microbiological Methods
|April 13, 2005
Abstract:
A widely used method for quantifying swarming motility is the swarm plate assay. A significant increase in the motility halo size formed by Escherichia coli or Azospirillum brasilense was measured on Tween 80-containing agar relative to untreated agar. This improvement could benefit the identification of mutants in swarming motility.

