Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Host responses in life-history traits and tolerance to virus infection in Arabidopsis thaliana
Year:2008
Research Areas
  • Crop production
Information
Abstract
Knowing how hosts respond to parasite infection is paramount in understanding the effects of parasites on host populations and hence host¿parasite co-evolution. Modification of life-history traits in response to parasitism has received less attention than other defence strategies. Life-history theory predicts that parasitised hosts will increase reproductive effort and accelerate reproduction. However, empirical analyses of these predictions are few and mostly limited to animalparasite systems. We have analysed life-history trait responses in 18 accessions of Arabidopsis thaliana infected at two different developmental stages with three strains of Cucumber mosaic virus (CMV). Accessions were divided into two groups according to allometric relationships; these groups differed also in their tolerance to CMV infection. Life-history trait modification upon virus infection depended on the host genotype and the stage at infection. While all accessions delayed flowering, only the more tolerant allometric group modified resource allocation to increase the production of reproductive structures and progeny, and reduced the length of reproductive period. Our results are in agreement with modifications of life-history traits reported for parasitised animals and with predictions from life-history theory. Thus, we provide empirical support for the general validity of theoretical predictions. In addition, this experimental approach allowed us to quantitatively estimate the genetic determinism of life-history trait plasticity and to evaluate the role of life-history trait modification in defence against parasites, two largely unexplored issues.
International
Si
JCR
Si
Title
PLoS Pathogens
ISBN
1553-7366
Impact factor JCR
9,336
Impact info
Volume
4
Journal number
1000134
From page
1
To page
10
Month
AGOSTO
Ranking
Participants
  • Participante: CARLOS ALONSO-BLANCO
  • Autor: Fernando Garcia-Arenal Rodriguez (UPM)
  • Autor: Jesus Israel Pagan Muñoz (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Patología Vegetal
  • Departamento: Biotecnología
  • Centro o Instituto I+D+i: Centro de Biotecnología y Genómica de Plantas, CBGP
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)