Dispersal strategies shape persistence and evolution of human gut bacteria.
Cell Host Microbe
; 29(7): 1167-1176.e9, 2021 07 14.
Article
em En
| MEDLINE
| ID: mdl-34111423
ABSTRACT
Human gut bacterial strains can co-exist with their hosts for decades, but little is known about how these microbes persist and disperse, and evolve thereby. Here, we examined these processes in 5,278 adult and infant fecal metagenomes, longitudinally sampled in individuals and families. Our analyses revealed that a subset of gut species is extremely persistent in individuals, families, and geographic regions, represented often by locally successful strains of the phylum Bacteroidota. These "tenacious" bacteria show high levels of genetic adaptation to the human host but a high probability of loss upon antibiotic interventions. By contrast, heredipersistent bacteria, notably Firmicutes, often rely on dispersal strategies with weak phylogeographic patterns but strong family transmissions, likely related to sporulation. These analyses describe how different dispersal strategies can lead to the long-term persistence of human gut microbes with implications for gut flora modulations.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Bactérias
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Microbioma Gastrointestinal
Limite:
Adult
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Child, preschool
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Female
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Humans
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Infant
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Male
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Middle aged
Idioma:
En
Revista:
Cell Host Microbe
Assunto da revista:
MICROBIOLOGIA
Ano de publicação:
2021
Tipo de documento:
Article