Reticulate evolution is favored in influenza niche switching.
Proc Natl Acad Sci U S A
; 113(19): 5335-9, 2016 May 10.
Article
em En
| MEDLINE
| ID: mdl-27114508
ABSTRACT
Reticulate evolution is thought to accelerate the process of evolution beyond simple genetic drift and selection, helping to rapidly generate novel hybrids with combinations of adaptive traits. However, the long-standing dogma that reticulate evolutionary processes are likewise advantageous for switching ecological niches, as in microbial pathogen host switch events, has not been explicitly tested. We use data from the influenza genome sequencing project and a phylogenetic heuristic approach to show that reassortment, a reticulate evolutionary mechanism, predominates over mutational drift in transmission between different host species. Moreover, as host evolutionary distance increases, reassortment is increasingly favored. We conclude that the greater the quantitative difference between ecological niches, the greater the importance of reticulate evolutionary processes in overcoming niche barriers.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Vírus Reordenados
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Evolução Molecular
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Alphainfluenzavirus
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Influenza Humana
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Interações Hospedeiro-Parasita
Limite:
Animals
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Humans
Idioma:
En
Revista:
Proc Natl Acad Sci U S A
Ano de publicação:
2016
Tipo de documento:
Article