Host responses in life-history traits and tolerance to virus infection in Arabidopsis thaliana

Garcia-Arenal Rodriguez, Fernando and Pagán Muñoz, Jesús Israel (2008). Host responses in life-history traits and tolerance to virus infection in Arabidopsis thaliana. "Plos Pathogens", v. 4 (n. 8); pp. 1000124-1. ISSN 1553-7366. https://doi.org/10.1371/journal.ppat.1000124.

Description

Title: Host responses in life-history traits and tolerance to virus infection in Arabidopsis thaliana
Author/s:
  • Garcia-Arenal Rodriguez, Fernando
  • Pagán Muñoz, Jesús Israel
Item Type: Article
Título de Revista/Publicación: Plos Pathogens
Date: August 2008
ISSN: 1553-7366
Volume: 4
Subjects:
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Biotecnologia [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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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.

More information

Item ID: 2610
DC Identifier: http://oa.upm.es/2610/
OAI Identifier: oai:oa.upm.es:2610
DOI: 10.1371/journal.ppat.1000124
Official URL: http://www.plospathogens.org/article/browseIssue.action?issue=info:doi/10.1371/issue.ppat.v04.i08
Deposited by: Memoria Investigacion
Deposited on: 18 Mar 2010 10:34
Last Modified: 20 Apr 2016 12:15
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