Shelter in a Swarm.
Flagella propel bacteria during both swimming and swarming, dispersing them widely. However, while swimming bacteria use chemotaxis to find nutrients and avoid toxic environments, swarming bacteria appear to suppress chemotaxis and to use the dynamics of their collective motion to continuously expand and acquire new territory, barrel through lethal chemicals in their path, carry along bacterial and fungal cargo that assists in exploration of new niches, and engage in group warfare for niche dominance. Here, we focus on two aspects of swarming, which, if understood, hold the promise of revealing new insights into microbial signaling and behavior, with ramifications beyond bacterial swarming. These are as follows: how bacteria sense they are on a surface and turn on programs that promote movement and how they override scarcity and adversity as dense packs.
Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, USA. Electronic address: rasika@austin.utexas.edu.
Rasika M
RM
Harshey
Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, USA.
Jonathan D
JD
Partridge
D000900:Anti-Bacterial Agents / Q000494:pharmacology; D001412:Bacillus subtilis / Q000502:physiology; D018407:Bacterial Physiological Phenomena; D002633:Chemotaxis; D024881:Drug Resistance, Bacterial; D004926:Escherichia coli / Q000502:physiology; D005407:Flagella / Q000502:physiology*; D011513:Proteus mirabilis / Q000166:cytology / Q000502:physiology; D012475:Salmonella / Q000502:physiology; D014736:Vibrio parahaemolyticus / Q000502:physiology
D000900:Anti-Bacterial Agents
antibiotic resistance; biofilms; flagellar motor; group migration; surface sensing