Below-ground abiotic and biotic heterogeneity shapes above-ground infection outcomes and spatial divergence in a host-parasite interaction
© 2015 The Authors. New Phytologist © 2015 New Phytologist Trust.
| Publié dans: | The New phytologist. - 1990. - 207(2015), 4 vom: 05. Sept., Seite 1159-69 |
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| Auteur principal: | |
| Autres auteurs: | , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2015
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| Accès à la collection: | The New phytologist |
| Sujets: | Journal Article Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't above-ground-below-ground interactions coevolution ecotype environmental heterogeneity genotype × genotype × environment (G × G × E) habitat type host-pathogen plus... |
| Résumé: | © 2015 The Authors. New Phytologist © 2015 New Phytologist Trust. We investigated the impact of below-ground and above-ground environmental heterogeneity on the ecology and evolution of a natural plant-pathogen interaction. We combined field measurements and a reciprocal inoculation experiment to investigate the potential for natural variation in abiotic and biotic factors to mediate infection outcomes in the association between the fungal pathogen Melampsora lini and its wild flax host, Linum marginale, where pathogen strains and plant lines originated from two ecologically distinct habitat types that occur in close proximity ('bog' and 'hill'). The two habitat types differed strikingly in soil moisture and soil microbiota. Infection outcomes for different host-pathogen combinations were strongly affected by the habitat of origin of the plant lines and pathogen strains, the soil environment and their interactions. Our results suggested that tradeoffs play a key role in explaining the evolutionary divergence in interaction traits among the two habitat types. Overall, we demonstrate that soil heterogeneity, by mediating infection outcomes and evolutionary divergence, can contribute to the maintenance of variation in resistance and pathogenicity within a natural host-pathogen metapopulation |
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| Description: | Date Completed 04.05.2016 Date Revised 30.09.2020 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1469-8137 |
| DOI: | 10.1111/nph.13408 |