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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ftdoajarticles:oai:doaj.org/article:94c77721f61a4799b5097d17ed77275c 2023-05-15T15:15:55+02:00 Heat stress responses and population genetics of the kelp Laminaria digitata (Phaeophyceae) across latitudes reveal differentiation among North Atlantic populations Daniel Liesner Louise Fouqueau Myriam Valero Michael Y. Roleda Gareth A. Pearson Kai Bischof Klaus Valentin Inka Bartsch 2020-09-01T00:00:00Z https://doi.org/10.1002/ece3.6569 https://doaj.org/article/94c77721f61a4799b5097d17ed77275c EN eng Wiley https://doi.org/10.1002/ece3.6569 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.6569 https://doaj.org/article/94c77721f61a4799b5097d17ed77275c Ecology and Evolution, Vol 10, Iss 17, Pp 9144-9177 (2020) growth rate local adaptation marine forest marine heatwave microsatellite physiology Ecology QH540-549.5 article 2020 ftdoajarticles https://doi.org/10.1002/ece3.6569 2022-12-31T07:23:27Z 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 Arctic Kongsfjord* Kongsfjorden North Atlantic Spitsbergen Directory of Open Access Journals: DOAJ Articles Arctic Norway Helgoland Ecology and Evolution 10 17 9144 9177 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
growth rate local adaptation marine forest marine heatwave microsatellite physiology Ecology QH540-549.5 |
spellingShingle |
growth rate local adaptation marine forest marine heatwave microsatellite physiology Ecology QH540-549.5 Daniel Liesner Louise Fouqueau Myriam Valero Michael Y. Roleda Gareth A. Pearson Kai Bischof Klaus Valentin Inka Bartsch Heat stress responses and population genetics of the kelp Laminaria digitata (Phaeophyceae) across latitudes reveal differentiation among North Atlantic populations |
topic_facet |
growth rate local adaptation marine forest marine heatwave microsatellite physiology Ecology QH540-549.5 |
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 ... |
format |
Article in Journal/Newspaper |
author |
Daniel Liesner Louise Fouqueau Myriam Valero Michael Y. Roleda Gareth A. Pearson Kai Bischof Klaus Valentin Inka Bartsch |
author_facet |
Daniel Liesner Louise Fouqueau Myriam Valero Michael Y. Roleda Gareth A. Pearson Kai Bischof Klaus Valentin Inka Bartsch |
author_sort |
Daniel Liesner |
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 |
https://doi.org/10.1002/ece3.6569 https://doaj.org/article/94c77721f61a4799b5097d17ed77275c |
geographic |
Arctic Norway Helgoland |
geographic_facet |
Arctic Norway Helgoland |
genre |
Arctic Kongsfjord* Kongsfjorden North Atlantic Spitsbergen |
genre_facet |
Arctic Kongsfjord* Kongsfjorden North Atlantic Spitsbergen |
op_source |
Ecology and Evolution, Vol 10, Iss 17, Pp 9144-9177 (2020) |
op_relation |
https://doi.org/10.1002/ece3.6569 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.6569 https://doaj.org/article/94c77721f61a4799b5097d17ed77275c |
op_doi |
https://doi.org/10.1002/ece3.6569 |
container_title |
Ecology and Evolution |
container_volume |
10 |
container_issue |
17 |
container_start_page |
9144 |
op_container_end_page |
9177 |
_version_ |
1766346246622019584 |