Changes in the foliar fungal community between oak leaf flushes along a latitudinal gradient in Europe
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Changes in the foliar fungal community between oak leaf flushes along a latitudinal gradient in Europe. / Gaytán, Álvaro; Abdelfattah, Ahmed; Faticov, Maria; Moreira, Xoaquín; Castagneyrol, Bastien; Van Halder, Inge; De Frenne, Pieter; Meeussen, Camille; Timmermans, Bart G. H.; Ten Hoopen, Jan P. J. G.; Rasmussen, Pil U.; Bos, Nick; Jaatinen, Raimo; Pulkkinen, Pertti; Söderlund, Sara; Gotthard, Karl; Pawlowski, Katharina; Tack, Ayco J. M.
I: Journal of Biogeography, Bind 49, Nr. 12, 2022.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Changes in the foliar fungal community between oak leaf flushes along a latitudinal gradient in Europe
AU - Gaytán, Álvaro
AU - Abdelfattah, Ahmed
AU - Faticov, Maria
AU - Moreira, Xoaquín
AU - Castagneyrol, Bastien
AU - Van Halder, Inge
AU - De Frenne, Pieter
AU - Meeussen, Camille
AU - Timmermans, Bart G. H.
AU - Ten Hoopen, Jan P. J. G.
AU - Rasmussen, Pil U.
AU - Bos, Nick
AU - Jaatinen, Raimo
AU - Pulkkinen, Pertti
AU - Söderlund, Sara
AU - Gotthard, Karl
AU - Pawlowski, Katharina
AU - Tack, Ayco J. M.
N1 - Publisher Copyright: © 2022 The Authors. Journal of Biogeography published by John Wiley & Sons Ltd.
PY - 2022
Y1 - 2022
N2 - 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.
AB - 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.
KW - community composition
KW - foliar fungi
KW - growing season
KW - latitude
KW - leaf flush
KW - Quercus robur
U2 - 10.1111/jbi.14508
DO - 10.1111/jbi.14508
M3 - Journal article
C2 - 36636040
AN - SCOPUS:85139763167
VL - 49
JO - Journal of Biogeography
JF - Journal of Biogeography
SN - 0305-0270
IS - 12
ER -
ID: 323978191