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From leaf to continent: The multi-scale distribution of an invasive cryptic pathogen complex on oak
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Number of Authors: 382018 (English)In: Fungal ecology, ISSN 1754-5048, E-ISSN 1878-0083, Vol. 36, p. 39-50Article in journal (Refereed) Published
Abstract [en]

The spatial distribution and niche differentiation of three closely related species (Erysiphe alphitoides, Erysiphe quercicola and Erysiphe hypophylla) causing oak powdery mildew was studied at scales ranging from the European continent, where they are invasive, to a single leaf. While E. alphitoides was dominant at all scales, E. quercicola and E. hypophylla had restricted geographic, stand and leaf distributions. The large-scale distributions were likely explained by climatic factors and species environmental tolerances, with E. quercicola being more frequent in warmer climates and E. hypophylla in colder climates. The extensive sampling and molecular analyses revealed the cryptic invasion of E. quercicola in nine countries from which it had not previously been recorded. The presence of the three species was also strongly affected by host factors, such as oak species and developmental stage. Segregation patterns between Erysiphe species were observed at the leaf scale, between and within leaf surfaces, suggesting competitive effects.

Place, publisher, year, edition, pages
2018. Vol. 36, p. 39-50
Keywords [en]
Cryptic invasion, Cryptic species, Erysiphe, Oak, Plant pathogen, Powdery mildew, Quercus, Spatial distribution, Emission inventory, Species coexistence
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:su:diva-163580DOI: 10.1016/j.funeco.2018.08.001ISI: 000452564900005OAI: oai:DiVA.org:su-163580DiVA, id: diva2:1278066
Available from: 2019-01-11 Created: 2019-01-11 Last updated: 2019-01-11Bibliographically approved

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Cech, ThomasJung, Marilia HortaJung, ThomasTack, Ayco J. M.
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Department of Ecology, Environment and Plant Sciences
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