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Shifts in diversification rates and host jump frequencies shaped the diversity of host range among Sclerotiniaceae fungal plant pathogens
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Navaud, Olivier, Barbacci, Adelin, Taylor, Andrew, Clarkson, John P. and Raffaele, Sylvain (2018) Shifts in diversification rates and host jump frequencies shaped the diversity of host range among Sclerotiniaceae fungal plant pathogens. Molecular Ecology, 27 (5). pp. 1309-1323. doi:10.1111/mec.14523 ISSN 0962-1083.
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WRAP-shifts-diversification-rates-host-jump-frequencies-shaped-diversity-host-range-among-Sclerotiniaceae-fungal-Clarkson-2018.pdf - Accepted Version Embargoed item. Restricted access to Repository staff only - Requires a PDF viewer. Download (1174Kb) |
Official URL: http://dx.doi.org/10.1111/mec.14523
Abstract
The range of hosts that a parasite can infect in nature is a trait determined by its own evolutionary history and that of its potential hosts. However, knowledge on host range diversity and evolution at the family level is often lacking. Here, we investigate host range variation and diversification trends within the Sclerotiniaceae, a family of Ascomycete fungi. Using a phylogenetic framework, we associate diversification rates, the frequency of host jump events and host range variation during the evolution of this family. Variations in diversification rate during the evolution of the Sclerotiniaceae define three major macro‐evolutionary regimes with contrasted proportions of species infecting a broad range of hosts. Host–parasite cophylogenetic analyses pointed towards parasite radiation on distant hosts long after host speciation (host jump or duplication events) as the dominant mode of association with plants in the Sclerotiniaceae. The intermediate macro‐evolutionary regime showed a low diversification rate, high frequency of duplication events and the highest proportion of broad host range species. Our findings suggest that the emergence of broad host range fungal pathogens results largely from host jumps, as previously reported for oomycete parasites, probably combined with low speciation rates. These results have important implications for our understanding of fungal parasites evolution and are of particular relevance for the durable management of disease epidemics.
Item Type: | Journal Article | ||||||||||||
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Subjects: | Q Science > QK Botany | ||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||||||||
Library of Congress Subject Headings (LCSH): | Sclerotiniaceae, Host-parasite relationships, Angiosperms -- Diseases and pests, Plant viruses -- Host plants, Angiosperms -- Phylogeny | ||||||||||||
Journal or Publication Title: | Molecular Ecology | ||||||||||||
Publisher: | Wiley-Blackwell Publishing Ltd. | ||||||||||||
ISSN: | 0962-1083 | ||||||||||||
Official Date: | 23 March 2018 | ||||||||||||
Dates: |
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Volume: | 27 | ||||||||||||
Number: | 5 | ||||||||||||
Page Range: | pp. 1309-1323 | ||||||||||||
DOI: | 10.1111/mec.14523 | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||
Date of first compliant deposit: | 27 March 2018 | ||||||||||||
Date of first compliant Open Access: | 28 March 2018 | ||||||||||||
RIOXX Funder/Project Grant: |
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