2023 article

Contrasting Genetic Diversity of Listeria Pathogenicity Islands 3 and 4 Harbored by Nonpathogenic Listeria spp.

Lee, S., Parsons, C., Chen, Y., Dungan, R. S. S., & Kathariou, S. (2023, February 2). APPLIED AND ENVIRONMENTAL MICROBIOLOGY.

By: S. Lee *, C. Parsons n, Y. Chen *, R. Dungan * & S. Kathariou n

author keywords: Listeria; genetic diversity; pathogenicity islands
MeSH headings : Humans; Genomic Islands; Listeria / genetics; Listeriosis / veterinary; Listeriosis / microbiology; Listeria monocytogenes / genetics; Genetic Variation; Food Microbiology
TL;DR: Analysis of the whole-genome sequence data suggested that both islands were horizontally acquired but differed considerably in their incidence and genetic diversity, demonstrating that pathogenicity islands in nonpathogenic hosts can evolve along different trajectories, leading to either degeneration or maintenance, and highlight the need to examine their physiological roles in non pathogenic hosts. (via Semantic Scholar)
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Source: Web Of Science
Added: March 6, 2023

Listeria monocytogenes is a serious foodborne pathogen that can harbor the pathogenicity islands Listeria pathogenicity island 3 (LIPI-3) and LIPI-4. Intriguingly, these have also been reported in nonpathogenic L. innocua from food and farm environments, though limited information is available for strains from the natural environment.