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Patterns of thermal adaptation in a globally distributed plant pathogen: Local diversity and plasticity reveal two‐tier dynamics

Plant pathogen populations inhabit patchy environments with contrasting, variable thermal conditions. We investigated the diversity of thermal responses in populations sampled over contrasting spatiotemporal scales, to improve our understanding of their dynamics of adaptation to local conditions. Sa...

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Autores principales: Boixel, Anne‐Lise, Chelle, Michaël, Suffert, Frédéric
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8796916/
https://www.ncbi.nlm.nih.gov/pubmed/35127031
http://dx.doi.org/10.1002/ece3.8515
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author Boixel, Anne‐Lise
Chelle, Michaël
Suffert, Frédéric
author_facet Boixel, Anne‐Lise
Chelle, Michaël
Suffert, Frédéric
author_sort Boixel, Anne‐Lise
collection PubMed
description Plant pathogen populations inhabit patchy environments with contrasting, variable thermal conditions. We investigated the diversity of thermal responses in populations sampled over contrasting spatiotemporal scales, to improve our understanding of their dynamics of adaptation to local conditions. Samples of natural populations of the wheat pathogen Zymoseptoria tritici were collected from sites within the Euro‐Mediterranean region subject to a broad range of climatic conditions. We tested for local adaptation, by accounting for the diversity of responses at the individual and population levels on the basis of key thermal performance curve parameters and “thermotype” (groups of individuals with similar thermal responses) composition. The characterization of phenotypic responses and genotypic structure revealed the following: (i) a high degree of individual plasticity and variation in sensitivity to temperature conditions across spatiotemporal scales and populations; and (ii) geographic variation in thermal response among populations, with major alterations due to seasonal patterns over the wheat‐growing season. The seasonal shifts in functional composition suggest that populations are locally structured by selection, contributing to adaptation patterns. Further studies combining selection experiments and modeling are required to determine how functional group selection drives population dynamics and adaptive potential in response to thermal heterogeneity.
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spelling pubmed-87969162022-02-04 Patterns of thermal adaptation in a globally distributed plant pathogen: Local diversity and plasticity reveal two‐tier dynamics Boixel, Anne‐Lise Chelle, Michaël Suffert, Frédéric Ecol Evol Research Articles Plant pathogen populations inhabit patchy environments with contrasting, variable thermal conditions. We investigated the diversity of thermal responses in populations sampled over contrasting spatiotemporal scales, to improve our understanding of their dynamics of adaptation to local conditions. Samples of natural populations of the wheat pathogen Zymoseptoria tritici were collected from sites within the Euro‐Mediterranean region subject to a broad range of climatic conditions. We tested for local adaptation, by accounting for the diversity of responses at the individual and population levels on the basis of key thermal performance curve parameters and “thermotype” (groups of individuals with similar thermal responses) composition. The characterization of phenotypic responses and genotypic structure revealed the following: (i) a high degree of individual plasticity and variation in sensitivity to temperature conditions across spatiotemporal scales and populations; and (ii) geographic variation in thermal response among populations, with major alterations due to seasonal patterns over the wheat‐growing season. The seasonal shifts in functional composition suggest that populations are locally structured by selection, contributing to adaptation patterns. Further studies combining selection experiments and modeling are required to determine how functional group selection drives population dynamics and adaptive potential in response to thermal heterogeneity. John Wiley and Sons Inc. 2022-01-26 /pmc/articles/PMC8796916/ /pubmed/35127031 http://dx.doi.org/10.1002/ece3.8515 Text en © 2022 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Articles
Boixel, Anne‐Lise
Chelle, Michaël
Suffert, Frédéric
Patterns of thermal adaptation in a globally distributed plant pathogen: Local diversity and plasticity reveal two‐tier dynamics
title Patterns of thermal adaptation in a globally distributed plant pathogen: Local diversity and plasticity reveal two‐tier dynamics
title_full Patterns of thermal adaptation in a globally distributed plant pathogen: Local diversity and plasticity reveal two‐tier dynamics
title_fullStr Patterns of thermal adaptation in a globally distributed plant pathogen: Local diversity and plasticity reveal two‐tier dynamics
title_full_unstemmed Patterns of thermal adaptation in a globally distributed plant pathogen: Local diversity and plasticity reveal two‐tier dynamics
title_short Patterns of thermal adaptation in a globally distributed plant pathogen: Local diversity and plasticity reveal two‐tier dynamics
title_sort patterns of thermal adaptation in a globally distributed plant pathogen: local diversity and plasticity reveal two‐tier dynamics
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8796916/
https://www.ncbi.nlm.nih.gov/pubmed/35127031
http://dx.doi.org/10.1002/ece3.8515
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