Intraspecific host variation plays a key role in virus community assembly

Suvi Sallinen (), Anna Norberg, Hanna Susi and Anna-Liisa Laine
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Suvi Sallinen: Organismal and Evolutionary Biology Research Programme, Viikinkaari 1 (PO box 65), FI-00014, University of Helsinki
Anna Norberg: University of Zürich
Hanna Susi: Organismal and Evolutionary Biology Research Programme, Viikinkaari 1 (PO box 65), FI-00014, University of Helsinki
Anna-Liisa Laine: Organismal and Evolutionary Biology Research Programme, Viikinkaari 1 (PO box 65), FI-00014, University of Helsinki

Nature Communications, 2020, vol. 11, issue 1, 1-11

Abstract: Abstract Infection by multiple pathogens of the same host is ubiquitous in both natural and managed habitats. While intraspecific variation in disease resistance is known to affect pathogen occurrence, how differences among host genotypes affect the assembly of pathogen communities remains untested. In our experiment using cloned replicates of naive Plantago lanceolata plants as sentinels during a seasonal virus epidemic, we find non-random co-occurrence patterns of five focal viruses. Using joint species distribution modelling, we attribute the non-random virus occurrence patterns primarily to differences among host genotypes and local population context. Our results show that intraspecific variation among host genotypes may play a large, previously unquantified role in pathogen community structure.

Date: 2020
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DOI: 10.1038/s41467-020-19273-z

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