Memorias de investigación
Artículos en revistas:
Arabidopsis thaliana as a model for the study of plant-virus co-evolution
Año:2010
Áreas de investigación
  • Ciencias naturales y ciencias de la salud,
  • Biología vegetal, animal y ecología
Datos
Descripción
Understanding plant¿virus coevolution requires wild systems in which there is no human manipulation of either host or virus. To develop such a system, we analysed virus infection in six wild populations of Arabidopsis thaliana in Central Spain. The incidence of five virus species with different life-styles was monitored during four years, and this was analysed in relation to the demography of the host populations. Total virus incidence reached 70 per cent, which suggests a role of virus infection in the population structure and dynamics of the host, under the assumption of a host fitness cost caused by the infection. Maximum incidence occurred at early growth stages, and co-infection with different viruses was frequent, two factors often resulting in increased virulence. Experimental infections under controlled conditions with two isolates of the most prevalent viruses, cauliflower mosaic virus and cucumber mosaic virus, showed that there is genetic variation for virus accumulation, although this depended on the interaction between host and virus genotypes. Comparison of QST-based genetic differentiations between both host populations with FST genetic differentiation based on putatively neutral markers suggests different selection dynamics for resistance against different virus species or genotypes. Together, these results are compatible with a hypothesis of plant¿virus coevolution.
Internacional
Si
JCR del ISI
Si
Título de la revista
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
ISSN
0962-8436
Factor de impacto JCR
5,117
Información de impacto
Volumen
365
DOI
10.1098/rstb.2010.0062
Número de revista
Desde la página
1983
Hasta la página
1995
Mes
ENERO
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Patología Vegetal