News to Know: Selective Switch Toggles Bacterial Traits While “Bacteria Evolve with Predictable Results”

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Gluttonous bacteria on the fast track compete with biofilm-makers boldly going where bacteria haven’t gone before.

Rapidly “evolving” bacteria are in the news. A mutation toggling the bacteria Pseudomonas aeruginosa between two distinct forms is generating excitement among evolutionary biologists. Joao Xavier of Memorial Sloan-Kettering Cancer Center and colleagues report in Cell Reports that they have repeatedly observed Pseudomonas evolve into “hyperswarmers.”

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