Shared influence of pathogen and host genetics on a trade-off between latent period and spore production capacity in the wheat pathogen, Puccinia triticina

A - Papers appearing in refereed journals

Pariaud, B., Van Den Berg, F., Van Den Bosch, F., Powers, S. J., Kaltz, O. and Lannou, C. 2013. Shared influence of pathogen and host genetics on a trade-off between latent period and spore production capacity in the wheat pathogen, Puccinia triticina. Evolutionary Applications. 6 (2), pp. 303-312.

AuthorsPariaud, B., Van Den Berg, F., Van Den Bosch, F., Powers, S. J., Kaltz, O. and Lannou, C.
Abstract

Crop pathogens are notorious for their rapid adaptation to their host. We still know little about the evolution of their life cycles and whether there might be trade-offs between fitness components, limiting the evolutionary potential of these pathogens. In this study, we explored a trade-off between spore production capacity and latent period in Puccinia triticina, a fungal pathogen causing leaf rust on wheat. Using a simple multivariate (manova) technique, we showed that the covariance between the two traits is under shared control of host and pathogen, with contributions from host genotype (57%), pathogen genotype (18.4%) and genotypexgenotype interactions (12.5%). We also found variation in sign and strength of genetic correlations for the pathogen, when measured on different host varieties. Our results suggest that these important pathogen life-history traits do not freely respond to directional selection and that precise evolutionary trajectories are contingent on the genetic identity of the interacting host and pathogen.

KeywordsEvolutionary Biology
Year of Publication2013
JournalEvolutionary Applications
Journal citation6 (2), pp. 303-312
Digital Object Identifier (DOI)doi:10.1111/eva.12000
PubMed ID23467548
Open accessPublished as green open access
FunderBiotechnology and Biological Sciences Research Council
Institut National de la Recherche Agronomique (INRA)
Funder project or codeDelivering Sustainable Systems (SS) [ISPG]
Project: 4884
Application of statistical methods to predictive biology
Publisher's version
Output statusPublished
PublisherWiley
Copyright licenseCC BY
ISSN1752-4571

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