Fitness costs associated with unnecessary virulence factors and life history traits: evolutionary insights from the potato late blight pathogen <Emphasis Type="Italic">Phytophthora infestans</Emphasis> |
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Authors: | Josselin Montarry Frédéric M Hamelin Isabelle Glais Roselyne Corbière Didier Andrivon |
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Institution: | 1.INRA, Agrocampus-Ouest,UMR1099 BiO3P (Biology of Organisms and Populations applied to Plant Protection),Le Rheu,France;2.UR407 Pathologie Végétale,INRA,Montfavet,France |
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Abstract: | Background In gene-for-gene models of plant-pathogen interactions, the existence of fitness costs associated with unnecessary virulence
factors still represents an issue, both in evolutionary biology and agricultural sciences. Measuring such costs experimentally
has proven difficult, especially in pathogens not readily amenable to genetic transformation, since the creation of isogenic
lines differing only by the presence or absence of avirulence genes cannot be achieved in many organisms. Here, we circumvented
this difficulty by comparing fitness traits in groups of Phytophthora infestans isolates sharing the same multilocus fingerprint, but differing by their virulence/avirulence spectrum. |
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