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Descripción
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| Despite that plant viruses are virulent crop parasites, and that resistance in crops selects for increased pathogenicity in viruses, virus evolution in crops is poorly understood, and there is no clear demonstration of plant-virus co-evolution. We have analysed the reciprocal effects of virulence and defence of viruses and plants on plant and virus fitness, and on whether they lead to co-evolution. Results derive from analyses of tabamovirus infection of pepper (Capsicum annuum) crops and wild relatives. I will report results referring to the virus side of the partnership. Increased pathogenicity (i.e., the ability to overcome resistance factors in a gene-for-gene interaction) results in decreased virulence (i.e., reduction of host fitness upon infection). Moreover, pathogenicity has associated penalties on different components of the virus? fitness, including within host multiplication and survival. Interestingly, not all fitness costs are related to the interaction of the virus with the host plant, but these costs may affect the epidemiology and population dynamics of the different virus genotypes. This work reveals new effects of plant defence on virus fitness through associated trade-offs. | |
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Internacional
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Si |
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Nombre congreso
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Fist/Seven Workshop in Virus Evolution |
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Tipo de participación
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960 |
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Lugar del congreso
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Toftrees Conference Center, Sata College, PA, USA |
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Revisores
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Si |
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ISBN o ISSN
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00-0000-00 |
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DOI
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Fecha inicio congreso
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07/03/2013 |
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Fecha fin congreso
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10/03/2013 |
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Desde la página
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1 |
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Hasta la página
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1 |
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Título de las actas
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Abstracts |