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Variation in resistance to multiple pathogen species: anther smuts of Silene uniflora
The occurrence of multiple pathogen species on a shared host species is unexpected when they exploit the same micro-niche within the host individual. One explanation for such observations is the presence of pathogen-specific resistances segregating within the host population into sites that are diff...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Blackwell Publishing Ltd
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3488680/ https://www.ncbi.nlm.nih.gov/pubmed/23139888 http://dx.doi.org/10.1002/ece3.346 |
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author | Chung, Erin Petit, Elsa Antonovics, Janis Pedersen, Amy B Hood, Michael E |
author_facet | Chung, Erin Petit, Elsa Antonovics, Janis Pedersen, Amy B Hood, Michael E |
author_sort | Chung, Erin |
collection | PubMed |
description | The occurrence of multiple pathogen species on a shared host species is unexpected when they exploit the same micro-niche within the host individual. One explanation for such observations is the presence of pathogen-specific resistances segregating within the host population into sites that are differentially occupied by the competing pathogens. This study used experimental inoculations to test whether specific resistances may contribute to the maintenance of two species of anther-smut fungi, Microbotryum silenes-inflatae and Microbotryum lagerheimii, in natural populations of Silene uniflora in England and Wales. Overall, resistance to the two pathogens was strongly positively correlated among host populations and to a lesser degree among host families within populations. A few instances of specific resistance were also observed and confirmed by replicated inoculations. The results suggest that selection for resistance to one pathogen may protect the host from the emergence via host shifts of related pathogen species, and conversely that co-occurrence of two species of pathogens may be dependent on the presence of host genotypes susceptible to both. |
format | Online Article Text |
id | pubmed-3488680 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Blackwell Publishing Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-34886802012-11-08 Variation in resistance to multiple pathogen species: anther smuts of Silene uniflora Chung, Erin Petit, Elsa Antonovics, Janis Pedersen, Amy B Hood, Michael E Ecol Evol Original Research The occurrence of multiple pathogen species on a shared host species is unexpected when they exploit the same micro-niche within the host individual. One explanation for such observations is the presence of pathogen-specific resistances segregating within the host population into sites that are differentially occupied by the competing pathogens. This study used experimental inoculations to test whether specific resistances may contribute to the maintenance of two species of anther-smut fungi, Microbotryum silenes-inflatae and Microbotryum lagerheimii, in natural populations of Silene uniflora in England and Wales. Overall, resistance to the two pathogens was strongly positively correlated among host populations and to a lesser degree among host families within populations. A few instances of specific resistance were also observed and confirmed by replicated inoculations. The results suggest that selection for resistance to one pathogen may protect the host from the emergence via host shifts of related pathogen species, and conversely that co-occurrence of two species of pathogens may be dependent on the presence of host genotypes susceptible to both. Blackwell Publishing Ltd 2012-09 2012-08-13 /pmc/articles/PMC3488680/ /pubmed/23139888 http://dx.doi.org/10.1002/ece3.346 Text en © 2012 Published by Blackwell Publishing Ltd. http://creativecommons.org/licenses/by/2.5/ Re-use of this article is permitted in accordance with the Creative Commons Deed, Attribution 2.5, which does not permit commercial exploitation. |
spellingShingle | Original Research Chung, Erin Petit, Elsa Antonovics, Janis Pedersen, Amy B Hood, Michael E Variation in resistance to multiple pathogen species: anther smuts of Silene uniflora |
title | Variation in resistance to multiple pathogen species: anther smuts of Silene uniflora |
title_full | Variation in resistance to multiple pathogen species: anther smuts of Silene uniflora |
title_fullStr | Variation in resistance to multiple pathogen species: anther smuts of Silene uniflora |
title_full_unstemmed | Variation in resistance to multiple pathogen species: anther smuts of Silene uniflora |
title_short | Variation in resistance to multiple pathogen species: anther smuts of Silene uniflora |
title_sort | variation in resistance to multiple pathogen species: anther smuts of silene uniflora |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3488680/ https://www.ncbi.nlm.nih.gov/pubmed/23139888 http://dx.doi.org/10.1002/ece3.346 |
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