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  • Faticov, MariaStockholms universitet,Institutionen för ekologi, miljö och botanik (author)

Niche differentiation within a cryptic pathogen complex : climatic drivers and hyperparasitism at multiple spatial scales

  • Article/chapterEnglish2022

Publisher, publication year, extent ...

  • 2022-01-17
  • Wiley,2022
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:su-201879
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-201879URI
  • https://doi.org/10.1111/ecog.06062DOI
  • https://res.slu.se/id/publ/116032URI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Pathogens are embedded in multi-trophic food webs, which often include co-occurring cryptic species within the same pathogen complex. Nonetheless, we still lack an understanding of what dimensions of the ecological niche might allow these cryptic species to coexist. We explored the role of climate, host characteristics (tree autumn phenology) and attack by the fungal hyperparasite Ampelomyces (a group of fungi attacking plant pathogens) in defining the niches of three powdery mildew species (Erysiphe alphitoides, E. hypophylla and E. quercicola) within a cryptic pathogen complex on the pedunculate oak Quercus robur at the continental (Europe), national (Sweden and France) and landscape scales (a 5 km2 island in southwestern Finland). Previous studies have shown that climate separated the niches of three powdery mildew species (E. alphitoides, E. hypophylla and E. quercicola) in Europe and two species (E. alphitoides and E. quercicola) in France. In our study, we did not detect a significant relationship between temperature or precipitation and the distribution of E. alphitoides and E. hypophylla present in Sweden, while at the landscape scale, temperature, but not relative humidity, negatively affected disease incidence of E. alphitoides in an exceptionally warm year. Tree variation in autumn phenology did not influence disease incidence of powdery mildew species, and hyperparasite presence did not differ among powdery mildew species at the continental, national and landscape scale. Climate did not affect the distribution of the hyperparasite at the continental scale and at the national scale in Sweden. However, climate affected the hyperparasite distribution in France, with a negative relationship between non-growing season temperature and presence of the hyperparasite. Overall, our findings, in combination with earlier evidence, suggest that climatic factors are more important than species interactions in defining the niches of cryptic species within a pathogen complex on oak.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Desprez-Loustau, Marie-Laure (author)
  • Kiss, Levente (author)
  • Massot, Marie (author)
  • Faivre d'Arcier, Julie (author)
  • Mutz, Jessie (author)
  • Nemeth, Mark Z. (author)
  • Roslin, TomasSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för ekologi,Department of Ecology(Swepub:slu)101439 (author)
  • Tack, Ayco J. M.Stockholms universitet,Institutionen för ekologi, miljö och botanik(Swepub:su)atack (author)
  • Stockholms universitetInstitutionen för ekologi, miljö och botanik (creator_code:org_t)
  • Sveriges lantbruksuniversitet

Related titles

  • In:Ecography: Wiley2022:20906-75901600-0587

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