Changes in the foliar fungal community between oak leaf flushes along a latitudinal gradient in Europe.

Autor: Gaytán Á; Department of Ecology, Environment and Plant Sciences Stockholm University Stockholm Sweden.; Bolin Center for Climate Research Stockholm University Stockholm Sweden., Abdelfattah A; Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB) Potsdam Germany., Faticov M; Department of Biology Sherbrooke University Sherbrooke Quebec Canada., Moreira X; Misión Biológica de Galicia (MBG-CSIC) Pontevedra Spain., Castagneyrol B; BIOGECO, INRAE University of Bordeaux Cestas France., Van Halder I; BIOGECO, INRAE University of Bordeaux Cestas France., De Frenne P; Forest & Nature Lab Ghent University Gontrode-Melle Belgium., Meeussen C; Forest & Nature Lab Ghent University Gontrode-Melle Belgium., Timmermans BGH; Department of Agriculture Louis Bolk Institute Bunnik The Netherlands., Ten Hoopen JPJG; OneNature Ecology Arnhem The Netherlands., Rasmussen PU; The National Research Centre for the Working Environment Copenhagen Denmark., Bos N; Section for Ecology and Evolution University of Copenhagen Copenhagen Denmark., Jaatinen R; Natural Resources Institute Finland, Haapastensyrjä Breeding Station Läyliäinen Finland., Pulkkinen P; Natural Resources Institute Finland, Haapastensyrjä Breeding Station Läyliäinen Finland., Söderlund S; Department of Ecology, Environment and Plant Sciences Stockholm University Stockholm Sweden., Gotthard K; Bolin Center for Climate Research Stockholm University Stockholm Sweden.; Department of Zoology Stockholm University Stockholm Sweden., Pawlowski K; Department of Ecology, Environment and Plant Sciences Stockholm University Stockholm Sweden., Tack AJM; Department of Ecology, Environment and Plant Sciences Stockholm University Stockholm Sweden.; Bolin Center for Climate Research Stockholm University Stockholm Sweden.
Jazyk: angličtina
Zdroj: Journal of biogeography [J Biogeogr] 2022 Dec; Vol. 49 (12), pp. 2269-2280. Date of Electronic Publication: 2022 Oct 13.
DOI: 10.1111/jbi.14508
Abstrakt: Aim: Leaves support a large diversity of fungi, which are known to cause plant diseases, induce plant defences or influence leaf senescence and decomposition. To advance our understanding of how foliar fungal communities are structured and assembled, we assessed to what extent leaf flush and latitude can explain the within- and among-tree variation in foliar fungal communities.
Location: A latitudinal gradient spanning c . 20 degrees in latitude in Europe.
Taxa: The foliar fungal community associated with a foundation tree species, the pedunculate oak Quercus robur .
Methods: We examined the main and interactive effects of leaf flush and latitude on the foliar fungal community by sampling 20 populations of the pedunculate oak Quercus robur across the tree's range. We used the ITS region as a target for characterization of fungal communities using DNA metabarcoding.
Results: Species composition, but not species richness, differed between leaf flushes. Across the latitudinal gradient, species richness was highest in the central part of the oak's distributional range, and foliar fungal community composition shifted along the latitudinal gradient. Among fungal guilds, the relative abundance of plant pathogens and mycoparasites was lower on the first leaf flush, and the relative abundance of plant pathogens and saprotrophs decreased with latitude.
Conclusions: Changes in community composition between leaf flushes and along the latitudinal gradient were mostly a result of species turnover. Overall, our findings demonstrate that leaf flush and latitude explain 5%-22% of the small- and large-scale spatial variation in the foliar fungal community on a foundation tree within the temperate region. Using space-for-time substitution, we expect that foliar fungal community structure will change with climate warming, with an increase in the abundance of plant pathogens and mycoparasites at higher latitudes, with major consequences for plant health, species interactions and ecosystem dynamics.
Competing Interests: 5All authors declare no conflict of interest.
(© 2022 The Authors. Journal of Biogeography published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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