Co-evolution and Co-speciation of Host-Gut Bacteria Systems.
Cell Host Microbe
; 28(1): 12-22, 2020 07 08.
Article
en En
| MEDLINE
| ID: mdl-32645351
Mammalian gut microbiomes profoundly influence host fitness, but the processes that drive the evolution of host-microbiome systems are poorly understood. Recent studies suggest that mammals and their individual gut symbionts can have parallel evolutionary histories, as represented by their congruent phylogenies. These "co-phylogenetic" patterns are signatures of ancient co-speciation events and illustrate the cohesiveness of the mammalian host-gut microbiome entity over evolutionary times. Theory predicts that co-speciation between mammals and their gut symbionts could result from their co-evolution. However, there is only limited evidence of such co-evolution. Here, we propose a model that explains cophylogenetic patterns without relying on co-evolution. Specifically, we suggest that individual gut bacteria are likely to diverge in patterns recapitulating host phylogeny when hosts undergo allopatric speciation, limiting inter-host bacterial dispersal and genomic recombination. We provide evidence that the model is empirically grounded and propose a series of observational and experimental approaches to test its validity.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Simbiosis
/
Especiación Genética
/
Microbioma Gastrointestinal
/
Coevolución Biológica
Tipo de estudio:
Prognostic_studies
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Cell Host Microbe
Asunto de la revista:
MICROBIOLOGIA
Año:
2020
Tipo del documento:
Article