Heat stress responses and population genetics of the kelp Laminaria digitata (Phaeophyceae) across latitudes reveal differentiation among North Atlantic populations

Abstract To understand the thermal plasticity of a coastal foundation species across its latitudinal distribution, we assess physiological responses to high temperature stress in the kelp Laminaria digitata in combination with population genetic characteristics and relate heat resilience to genetic...

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Published in:Ecology and Evolution
Main Authors: Liesner, Daniel, Fouqueau, Louise, Valero, Myriam, Roleda, Michael Y., Pearson, Gareth A., Bischof, Kai, Valentin, Klaus, Bartsch, Inka
Other Authors: Deutsche Forschungsgemeinschaft, Conseil Régional de Bretagne
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2020
Subjects:
Online Access:http://dx.doi.org/10.1002/ece3.6569
https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.6569
https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.6569
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spelling crwiley:10.1002/ece3.6569 2024-09-15T18:17:03+00:00 Heat stress responses and population genetics of the kelp Laminaria digitata (Phaeophyceae) across latitudes reveal differentiation among North Atlantic populations Liesner, Daniel Fouqueau, Louise Valero, Myriam Roleda, Michael Y. Pearson, Gareth A. Bischof, Kai Valentin, Klaus Bartsch, Inka Deutsche Forschungsgemeinschaft Conseil Régional de Bretagne 2020 http://dx.doi.org/10.1002/ece3.6569 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.6569 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.6569 en eng Wiley http://creativecommons.org/licenses/by/3.0/ Ecology and Evolution volume 10, issue 17, page 9144-9177 ISSN 2045-7758 2045-7758 journal-article 2020 crwiley https://doi.org/10.1002/ece3.6569 2024-08-27T04:28:33Z Abstract To understand the thermal plasticity of a coastal foundation species across its latitudinal distribution, we assess physiological responses to high temperature stress in the kelp Laminaria digitata in combination with population genetic characteristics and relate heat resilience to genetic features and phylogeography. We hypothesize that populations from Arctic and cold‐temperate locations are less heat resilient than populations from warm distributional edges. Using meristems of natural L. digitata populations from six locations ranging between Kongsfjorden, Spitsbergen (79°N), and Quiberon, France (47°N), we performed a common‐garden heat stress experiment applying 15°C to 23°C over eight days. We assessed growth, photosynthetic quantum yield, carbon and nitrogen storage, and xanthophyll pigment contents as response traits. Population connectivity and genetic diversity were analyzed with microsatellite markers. Results from the heat stress experiment suggest that the upper temperature limit of L. digitata is nearly identical across its distribution range, but subtle differences in growth and stress responses were revealed for three populations from the species’ ecological range margins. Two populations at the species’ warm distribution limit showed higher temperature tolerance compared to other populations in growth at 19°C and recovery from 21°C (Quiberon, France), and photosynthetic quantum yield and xanthophyll pigment responses at 23°C (Helgoland, Germany). In L. digitata from the northernmost population (Spitsbergen, Norway), quantum yield indicated the highest heat sensitivity. Microsatellite genotyping revealed all sampled populations to be genetically distinct, with a strong hierarchical structure between southern and northern clades. Genetic diversity was lowest in the isolated population of the North Sea island of Helgoland and highest in Roscoff in the English Channel. All together, these results support the hypothesis of moderate local differentiation across L. digitata's European ... Article in Journal/Newspaper Kongsfjord* Kongsfjorden North Atlantic Spitsbergen Wiley Online Library Ecology and Evolution 10 17 9144 9177
institution Open Polar
collection Wiley Online Library
op_collection_id crwiley
language English
description Abstract To understand the thermal plasticity of a coastal foundation species across its latitudinal distribution, we assess physiological responses to high temperature stress in the kelp Laminaria digitata in combination with population genetic characteristics and relate heat resilience to genetic features and phylogeography. We hypothesize that populations from Arctic and cold‐temperate locations are less heat resilient than populations from warm distributional edges. Using meristems of natural L. digitata populations from six locations ranging between Kongsfjorden, Spitsbergen (79°N), and Quiberon, France (47°N), we performed a common‐garden heat stress experiment applying 15°C to 23°C over eight days. We assessed growth, photosynthetic quantum yield, carbon and nitrogen storage, and xanthophyll pigment contents as response traits. Population connectivity and genetic diversity were analyzed with microsatellite markers. Results from the heat stress experiment suggest that the upper temperature limit of L. digitata is nearly identical across its distribution range, but subtle differences in growth and stress responses were revealed for three populations from the species’ ecological range margins. Two populations at the species’ warm distribution limit showed higher temperature tolerance compared to other populations in growth at 19°C and recovery from 21°C (Quiberon, France), and photosynthetic quantum yield and xanthophyll pigment responses at 23°C (Helgoland, Germany). In L. digitata from the northernmost population (Spitsbergen, Norway), quantum yield indicated the highest heat sensitivity. Microsatellite genotyping revealed all sampled populations to be genetically distinct, with a strong hierarchical structure between southern and northern clades. Genetic diversity was lowest in the isolated population of the North Sea island of Helgoland and highest in Roscoff in the English Channel. All together, these results support the hypothesis of moderate local differentiation across L. digitata's European ...
author2 Deutsche Forschungsgemeinschaft
Conseil Régional de Bretagne
format Article in Journal/Newspaper
author Liesner, Daniel
Fouqueau, Louise
Valero, Myriam
Roleda, Michael Y.
Pearson, Gareth A.
Bischof, Kai
Valentin, Klaus
Bartsch, Inka
spellingShingle Liesner, Daniel
Fouqueau, Louise
Valero, Myriam
Roleda, Michael Y.
Pearson, Gareth A.
Bischof, Kai
Valentin, Klaus
Bartsch, Inka
Heat stress responses and population genetics of the kelp Laminaria digitata (Phaeophyceae) across latitudes reveal differentiation among North Atlantic populations
author_facet Liesner, Daniel
Fouqueau, Louise
Valero, Myriam
Roleda, Michael Y.
Pearson, Gareth A.
Bischof, Kai
Valentin, Klaus
Bartsch, Inka
author_sort Liesner, Daniel
title Heat stress responses and population genetics of the kelp Laminaria digitata (Phaeophyceae) across latitudes reveal differentiation among North Atlantic populations
title_short Heat stress responses and population genetics of the kelp Laminaria digitata (Phaeophyceae) across latitudes reveal differentiation among North Atlantic populations
title_full Heat stress responses and population genetics of the kelp Laminaria digitata (Phaeophyceae) across latitudes reveal differentiation among North Atlantic populations
title_fullStr Heat stress responses and population genetics of the kelp Laminaria digitata (Phaeophyceae) across latitudes reveal differentiation among North Atlantic populations
title_full_unstemmed Heat stress responses and population genetics of the kelp Laminaria digitata (Phaeophyceae) across latitudes reveal differentiation among North Atlantic populations
title_sort heat stress responses and population genetics of the kelp laminaria digitata (phaeophyceae) across latitudes reveal differentiation among north atlantic populations
publisher Wiley
publishDate 2020
url http://dx.doi.org/10.1002/ece3.6569
https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.6569
https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.6569
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North Atlantic
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op_source Ecology and Evolution
volume 10, issue 17, page 9144-9177
ISSN 2045-7758 2045-7758
op_rights http://creativecommons.org/licenses/by/3.0/
op_doi https://doi.org/10.1002/ece3.6569
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