Scientists discover dispersal mechanism and new gene family in harmful E. coli strains

Researchers at Tokyo Metropolitan University have identified a new gene family that allows harmful STEC bacteria to form chains and spread via fluid flow. This discovery explains how certain strains without traditional infection machinery can still cause severe foodborne illness.
Why it matters
Understanding these novel infection mechanisms is critical for developing new treatments and diagnostic tools for dangerous food poisoning outbreaks.
edited by Sadie Harley , reviewed by Robert Egan
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Add as preferred source How chain-forming STEC strains of E. coli spread. The team discovered that single bacterial cells can adhere and form chains on surfaces. Under a flow, these elongated structures can be torn off, leaving the free segment to adhere somewhere else before growing again. This strategy allows bacteria to spread over wider areas using flow. Credit: Tokyo Metropolitan University Researchers from Tokyo Metropolitan University have identified how certain dangerous bacteria spread. They studied chain-like adherence pattern (CLAP) varieties of Shiga toxin-producing E. coli (STEC), finding that single bacteria attach to a surface and elongate before dividing, producing chains without ever separating.
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