Speciation trajectories in recombining bacterial species

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

Organisaatiot

  • Harvard University

Kuvaus

Species are conventionally defined as groups of individuals that breed with each other, but not with those of other species. However, this does not apply to bacteria because, even if they reproduce clonally, DNA may be donated between distinct species. Nevertheless, bacterial species do exist, and a fundamental question is how they are created. We present a mathematical model to describe bacterial speciation. The model predicts that two groups of ecologically different bacteria, assumed to live in partially overlapping habitats, may evolve into genetically distinguishable clusters, without being able to proceed to full separation. Analysis of a divergent Streprococcus pneumoniae subgroup shows that such ‘satellite species’ exist and can be distinguished from more rapidly diverging clusters, like the one we detect in Campylobacter jejuni.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli e1005640
Sivut1-15
Sivumäärä15
JulkaisuPLoS computational biology
Vuosikerta13
Numero7
TilaJulkaistu - 3 heinäkuuta 2017
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Lataa tilasto

Ei tietoja saatavilla

ID: 14271474