Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Increased pathogenicity in a plant virus involves costs in different fitness components
Year:2013
Research Areas
  • Phytopathology,
  • Viral pathogens of plants,
  • Crop production
Information
Abstract
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.
International
Si
Congress
Fist/Seven Workshop in Virus Evolution
960
Place
Toftrees Conference Center, Sata College, PA, USA
Reviewers
Si
ISBN/ISSN
00-0000-00
Start Date
07/03/2013
End Date
10/03/2013
From page
1
To page
1
Abstracts
Participants
  • Autor: Fernando Garcia-Arenal Rodriguez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Patología Vegetal
  • Centro o Instituto I+D+i: Centro de Biotecnología y Genómica de Plantas, CBGP
  • Departamento: Biotecnología
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