Transmission rates and adaptive evolution of pathogens in sympatric heterogeneous plant populations

A - Papers appearing in refereed journals

Gudelj, I., Van Den Bosch, F. and Gilligan, C. A. 2004. Transmission rates and adaptive evolution of pathogens in sympatric heterogeneous plant populations. Proceedings of the Royal Society B: Biological Sciences. 271 (1553), pp. 2187-2194.

AuthorsGudelj, I., Van Den Bosch, F. and Gilligan, C. A.
Abstract

Diversification in agricultural cropping patterns is widely practised to delay the build–up of virulent races that can overcome host resistance in pathogen populations. This can lead to balanced polymorphism, but the long–term consequences of this strategy for the evolution of crop pathogen populations are still unclear. The widespread occurrence of sibling species and reproductively isolated sub–species among fungal and oomycete plant pathogens suggests that evolutionary divergence is common. This paper develops a mathematical model of host–pathogen interactions using a simple framework of two hosts to analyse the influences of sympatric host heterogeneity on the long–term evolutionary behaviour of plant pathogens. Using adaptive dynamics, which assumes that sequential mutations induce small changes in pathogen fitness, we show that evolutionary outcomes strongly depend on the shape of the trade–off curve between pathogen transmission on sympatric hosts. In particular, we determine the conditions under which the evolutionary branching of a monomorphic into a dimorphic population occurs, as well as the conditions that lead to the evolution of specialist (single host range) or generalist (multiple host range) pathogen populations.

Year of Publication2004
JournalProceedings of the Royal Society B: Biological Sciences
Journal citation271 (1553), pp. 2187-2194
Digital Object Identifier (DOI)doi:10.1098/rspb.2004.2837
PubMed Central IDPMC1691847
Open accessPublished as bronze (free) open access
Funder project or code513
Evolutionary ecology of fungal plant pathogen divergence
Publisher's version
Copyright license
Publisher copyright
File Access Level
Open
Output statusPublished
Publication dates
Online24 Sep 2004
Publication process dates
Accepted14 Jan 2004
PublisherRoyal Society Publishing
ISSN0962-8452

Permalink - https://repository.rothamsted.ac.uk/item/893yq/transmission-rates-and-adaptive-evolution-of-pathogens-in-sympatric-heterogeneous-plant-populations

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