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Caging dynamics in bacterial colonies
DOI:10.1103/PhysRevResearch.4.013187.png)
摘要
En 中文
In colonies, bacteria are often densely packed due to strong attractive forces between neighboring cells. For organisms where aggregation is mediated by type 4 pili interactions, the pilus-mediated motor activity fluidizes these colonies, but it is unclear how close packaging affects bacterial motility. Here, we characterize the dynamics of single cells over five orders of magnitude in time. At short timescales, we find pilus-driven ballistic dynamics, which depending on the volume fraction of cells, transitions to caged or diffusive dynamics at intermediate timescales. Long-term dynamics are dominated by growth-induced radial motion overcoming caging at high packings. Reducing attractive interactions by antibiotic treatment delays caging and introduces long-ranged collective motion.
Keyword:
RETRACTION
LIQUIDS
PHASE
期刊
IF:
4.2
论文数:
7.6K
被引数:
2.7W
机构
引用论文
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