Collective gradient sensing by dilute swimming bacteria without clustering

Autor: Tatsuro Kai, Takahiro Abe, Natsuhiko Yoshinaga, Shuichi Nakamura, Seishi Kudo, Shoichi Toyabe
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Physical Review Research, Vol 6, Iss 3, p L032061 (2024)
Druh dokumentu: article
ISSN: 2643-1564
DOI: 10.1103/PhysRevResearch.6.L032061
Popis: We characterize the taxis enhancement of swimming bacteria by collective migration without apparent clustering. We confine a dilute Salmonella suspension in a shallow channel and evaluate the thermotaxis response to local heating and diffusion. By combining cell tracking analysis and numerical simulation based on simple modeling, we show that the alignment interaction suppresses orientation fluctuation, strengthens migration bias, and also prevents the dispersion of accumulated population. The results show a prominent example of how a collective motion of active matter implements a biological function.
Databáze: Directory of Open Access Journals