MelampsoraV1, Main, Exploration, bibRecord, 000175

Evolution of virulence in a plant host-pathogen metapopulation.

Identifieur interne : 000175 ( Main/Exploration ); précédent : 000174; suivant : 000176

Evolution of virulence in a plant host-pathogen metapopulation.

Auteurs : Peter H. Thrall [Australie] ; Jeremy J. Burdon

Source :

Science (New York, N.Y.) [ 1095-9203 ] ; 2003.

RBID : pubmed:12637745

Descripteurs français

KwdFr :
- Basidiomycota (génétique), Basidiomycota (pathogénicité), Basidiomycota (physiologie), Gènes de plante (MeSH), Gènes fongiques (MeSH), Lin (génétique), Lin (microbiologie), Lin (physiologie), Maladies des plantes (microbiologie), Modèles génétiques (MeSH), Spores fongiques (MeSH), Sélection génétique (MeSH), Variation génétique (MeSH), Virulence (génétique), Évolution biologique (MeSH).
MESH :
- génétique : Basidiomycota, Lin, Virulence.
- microbiologie : Lin, Maladies des plantes.
- pathogénicité : Basidiomycota.
- physiologie : Basidiomycota, Lin.
- Gènes de plante, Gènes fongiques, Modèles génétiques, Spores fongiques, Sélection génétique, Variation génétique, Évolution biologique.

English descriptors

KwdEn :
- Basidiomycota (genetics), Basidiomycota (pathogenicity), Basidiomycota (physiology), Biological Evolution (MeSH), Flax (genetics), Flax (microbiology), Flax (physiology), Genes, Fungal (MeSH), Genes, Plant (MeSH), Genetic Variation (MeSH), Models, Genetic (MeSH), Plant Diseases (microbiology), Selection, Genetic (MeSH), Spores, Fungal (MeSH), Virulence (genetics).
MESH :
- genetics : Basidiomycota, Flax, Virulence.
- microbiology : Flax, Plant Diseases.
- pathogenicity : Basidiomycota.
- physiology : Basidiomycota, Flax.
- Biological Evolution, Genes, Fungal, Genes, Plant, Genetic Variation, Models, Genetic, Selection, Genetic, Spores, Fungal.

Abstract

In a wild plant-pathogen system, host resistance and pathogen virulence varied markedly among local populations. Broadly virulent pathogens occurred more frequently in highly resistant host populations, whereas avirulent pathogens dominated susceptible populations. Experimental inoculations indicated a negative trade-off between spore production and virulence. The nonrandom spatial distribution of pathogens, maintained through time despite high pathogen mobility, implies that selection favors virulent strains of Melampsora lini in resistant Linum marginale populations and avirulent strains in susceptible populations. These results are consistent with gene-for-gene models of host-pathogen coevolution that require trade-offs to prevent pathogen virulence increasing until host resistance becomes selectively neutral.

DOI: 10.1126/science.1080070
PubMed: 12637745

Affiliations:

Australie

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Le document en format XML

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<front><div type="abstract" xml:lang="en">In a wild plant-pathogen system, host resistance and pathogen virulence varied markedly among local populations. Broadly virulent pathogens occurred more frequently in highly resistant host populations, whereas avirulent pathogens dominated susceptible populations. Experimental inoculations indicated a negative trade-off between spore production and virulence. The nonrandom spatial distribution of pathogens, maintained through time despite high pathogen mobility, implies that selection favors virulent strains of Melampsora lini in resistant Linum marginale populations and avirulent strains in susceptible populations. These results are consistent with gene-for-gene models of host-pathogen coevolution that require trade-offs to prevent pathogen virulence increasing until host resistance becomes selectively neutral.</div>
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Evolution of virulence in a plant host-pathogen metapopulation.

Evolution of virulence in a plant host-pathogen metapopulation.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki