Niche differentiation within a cryptic pathogen complex: climatic drivers and hyperparasitism at multiple spatial scales
Article
Article Title | Niche differentiation within a cryptic pathogen complex: climatic drivers and hyperparasitism at multiple spatial scales |
---|---|
ERA Journal ID | 3227 |
Article Category | Article |
Authors | Faticov, Maria, Desprez-Loustau, Marie-Laure, Kiss, Levente, Massot, M., d’Arcier, Julie Faivre, Mutz, Jessie, Nemeth, Mark Z., Roslin, Tomas and Tack, Ayco J. M. |
Journal Title | Ecography: pattern and diversity in ecology |
Journal Citation | 2022 (2) |
Article Number | ECOG12834 |
Number of Pages | 12 |
Year | 2022 |
Place of Publication | United States |
ISSN | 0906-7590 |
1600-0587 | |
Digital Object Identifier (DOI) | https://doi.org/10.1111/ecog.06062 |
Web Address (URL) | https://nsojournals.onlinelibrary.wiley.com/doi/10.1111/ecog.06062 |
Abstract | 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. |
Keywords | climate variation; cryptic pathogen species; hyperparasite; niche differentiation; spatial distribution |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 300409. Crop and pasture protection (incl. pests, diseases and weeds) |
Byline Affiliations | Stockholm University, Sweden |
University of Bordeaux, France | |
Centre for Crop Health (Operations) | |
Florida State University, United States | |
Centre for Agricultural Research, Hungary | |
Swedish University of Agricultural Sciences, Sweden |
https://research.usq.edu.au/item/xx12v/niche-differentiation-within-a-cryptic-pathogen-complex-climatic-drivers-and-hyperparasitism-at-multiple-spatial-scales
Download files
Published Version
Ecography - 2022 - Faticov - Niche differentiation within a cryptic pathogen complex climatic drivers and hyperparasitism.pdf | ||
License: CC BY 4.0 | ||
File access level: Anyone |
1
total views0
total downloads1
views this month0
downloads this month