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Memorias de investigación
Artículos en revistas:
Vertical transmission selects for reduced virulence in a plant virus and for increased resistance in the host
Año:2014
Áreas de investigación
  • Fitopatología,
  • Virus patógenos de plantas
Datos
Descripción
Virulence is a key property of parasites, and is linked to the emergence of new diseases and to the reduction of ecosystem biodiversity. Consequently, scientists have devoted a great effort to build theoretical models that predict which factors may modulate virulence evolution. However, whether (and how) these factors affect virulence evolution has been seldom analysed experimentally. Using the plant virus Cucumber mosaic virus (CMV) and its natural host Arabidopsis thaliana, we studied the role of two such factors: the mode of transmission, and host adaptation in response to parasite evolution. We serially passaged CMV under strict vertical and strict horizontal transmission, and a combination of both. Subsequently, we analysed differences in CMV seed (vertical) transmission rate, accumulation and virulence between evolved and non-evolved viruses. We also compared whether these differences varied in original plants and in plants evolved during vertical passaging. Vertical passaging increased CMV seed transmission, and reduced accumulation and virulence, while horizontal passaging had no effect. Changes during vertical passaging were determined also by reciprocal host adaptation, which additionally reduced virulence and accumulation of vertically transmitted viruses. Hence, we provide evidence that the interplay between the transmission mode and host-parasite co-evolution is central in determining virulence evolution.
Internacional
Si
JCR del ISI
Si
Título de la revista
Plos Pathogens
ISSN
1553-7374
Factor de impacto JCR
8,057
Información de impacto
Volumen
10
DOI
Número de revista
Desde la página
e1004293
Hasta la página
e1004293
Mes
SIN MES
Ranking
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Participantes
  • Autor: Jesus Israel Pagan Muñoz (UPM)
  • Autor: Nuria Montes Casado (UPM)
  • Autor: Michael G. Milgroom (Cornell University, Ithaca, NY. USA)
  • Autor: Fernando Garcia-Arenal Rodriguez (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Patología Vegetal
  • Departamento: Biotecnología - Biología Vegetal
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