Defective or effective? Mutualistic interactions between virus genotypes - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Proceedings of the Royal Society B: Biological Sciences Year : 2003

Defective or effective? Mutualistic interactions between virus genotypes

Abstract

Defective viruses lack genes essential for survival but they can co-infect with complete virus genotypes and use gene products from the complete genotype for their replication and transmission. As such, they are detrimental to the fitness of complete genotypes. Here, we describe a mutualistic interaction between genotypes of an insect baculovirus (nucleopolyhedrovirus of Spodoptera frugiperda (Lepidoptera)) that increases the pathogenicity of the viral population. Mixtures of a complete genotype able to be transmitted orally and a deletion mutant unable to be transmitted orally resulted in a phenotype of increased pathogenicity. Because the infectiousness of mixed genotype infections was greater than that of single genotype infections, we predict that the transmissibility of mixed genotype occlusion bodies will be greater than that of any of their single genotype components. Such interactions will be subject to frequency-dependent selection and will influence the impact of these viruses on insect population dynamics and their efficacy as biological insecticides.
Fichier principal
Vignette du fichier
defective-or-effective.pdf (676.04 Ko) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-02681821 , version 1 (27-07-2023)

Identifiers

  • HAL Id : hal-02681821 , version 1
  • PRODINRA : 71736

Cite

Miguel Lopez-Ferber, O. Simon, T. Williams, P. Caballero. Defective or effective? Mutualistic interactions between virus genotypes. Proceedings of the Royal Society B: Biological Sciences, 2003, 270 (1530), pp.2249-2255. ⟨hal-02681821⟩
7 View
0 Download

Share

Gmail Mastodon Facebook X LinkedIn More