Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis.
The Southern Ocean is characterized by longitudinal water circulations crossed by strong latitudinal gradients. How this oceanographic background shapes planktonic populations is largely unknown, despite the significance of this region for global biogeochemical cycles. Here, we show, based on genomi...
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2020
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Online Access: | https://epic.awi.de/id/eprint/53672/ https://hdl.handle.net/10013/epic.08c6c20a-4810-40b4-a319-bdbd832577e4 |
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ftawi:oai:epic.awi.de:53672 2024-09-15T18:37:02+00:00 Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis. Postel, U. Glemser, Barbara Salazar Alekseyeva, Katherine Eggers, S. L. Groth, Marco Glöckner, Gernot John, Uwe Mock, Thomas Klemm, Kerstin Valentin, Klaus-Ulrich Beszteri, Bank 2020 https://epic.awi.de/id/eprint/53672/ https://hdl.handle.net/10013/epic.08c6c20a-4810-40b4-a319-bdbd832577e4 unknown WILEY-BLACKWELL PUBLISHING Postel, U. , Glemser, B. , Salazar Alekseyeva, K. , Eggers, S. L. , Groth, M. , Glöckner, G. , John, U. orcid:0000-0002-1297-4086 , Mock, T. , Klemm, K. , Valentin, K. U. and Beszteri, B. orcid:0000-0002-6852-1588 (2020) Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis. , Molecular Ecology, 24 , pp. 4754-4756 . doi:10.1111/mec.15554 <https://doi.org/10.1111/mec.15554> , hdl:10013/epic.08c6c20a-4810-40b4-a319-bdbd832577e4 EPIC3Molecular Ecology, WILEY-BLACKWELL PUBLISHING, 24, pp. 4754-4756, ISSN: 0962-1083 Article isiRev 2020 ftawi https://doi.org/10.1111/mec.15554 2024-06-24T04:26:11Z The Southern Ocean is characterized by longitudinal water circulations crossed by strong latitudinal gradients. How this oceanographic background shapes planktonic populations is largely unknown, despite the significance of this region for global biogeochemical cycles. Here, we show, based on genomic, morphometric, ecophysiological and mating compatibility data, an example of ecotypic differentiation and speciation within an endemic pelagic inhabitant, the diatom Fragilariopsis kerguelensis. We discovered three genotypic variants, one present throughout the latitudinal transect sampled, the others restricted to the north and south, respectively. The latter two showed reciprocal monophyly across all three genomes and significant ecophysiological differences consistent with local adaptation, but produced viable offspring in laboratory crosses. The third group was also reproductively isolated from the latter two. We hypothesize that this pattern originated by an adaptive expansion accompanied by ecotypic divergence, followed by sympatric speciation. Article in Journal/Newspaper Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Molecular Ecology 29 24 4913 4924 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The Southern Ocean is characterized by longitudinal water circulations crossed by strong latitudinal gradients. How this oceanographic background shapes planktonic populations is largely unknown, despite the significance of this region for global biogeochemical cycles. Here, we show, based on genomic, morphometric, ecophysiological and mating compatibility data, an example of ecotypic differentiation and speciation within an endemic pelagic inhabitant, the diatom Fragilariopsis kerguelensis. We discovered three genotypic variants, one present throughout the latitudinal transect sampled, the others restricted to the north and south, respectively. The latter two showed reciprocal monophyly across all three genomes and significant ecophysiological differences consistent with local adaptation, but produced viable offspring in laboratory crosses. The third group was also reproductively isolated from the latter two. We hypothesize that this pattern originated by an adaptive expansion accompanied by ecotypic divergence, followed by sympatric speciation. |
format |
Article in Journal/Newspaper |
author |
Postel, U. Glemser, Barbara Salazar Alekseyeva, Katherine Eggers, S. L. Groth, Marco Glöckner, Gernot John, Uwe Mock, Thomas Klemm, Kerstin Valentin, Klaus-Ulrich Beszteri, Bank |
spellingShingle |
Postel, U. Glemser, Barbara Salazar Alekseyeva, Katherine Eggers, S. L. Groth, Marco Glöckner, Gernot John, Uwe Mock, Thomas Klemm, Kerstin Valentin, Klaus-Ulrich Beszteri, Bank Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis. |
author_facet |
Postel, U. Glemser, Barbara Salazar Alekseyeva, Katherine Eggers, S. L. Groth, Marco Glöckner, Gernot John, Uwe Mock, Thomas Klemm, Kerstin Valentin, Klaus-Ulrich Beszteri, Bank |
author_sort |
Postel, U. |
title |
Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis. |
title_short |
Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis. |
title_full |
Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis. |
title_fullStr |
Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis. |
title_full_unstemmed |
Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis. |
title_sort |
adaptive divergence across southern ocean gradients in the pelagic diatomfragilariopsis kerguelensis. |
publisher |
WILEY-BLACKWELL PUBLISHING |
publishDate |
2020 |
url |
https://epic.awi.de/id/eprint/53672/ https://hdl.handle.net/10013/epic.08c6c20a-4810-40b4-a319-bdbd832577e4 |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
EPIC3Molecular Ecology, WILEY-BLACKWELL PUBLISHING, 24, pp. 4754-4756, ISSN: 0962-1083 |
op_relation |
Postel, U. , Glemser, B. , Salazar Alekseyeva, K. , Eggers, S. L. , Groth, M. , Glöckner, G. , John, U. orcid:0000-0002-1297-4086 , Mock, T. , Klemm, K. , Valentin, K. U. and Beszteri, B. orcid:0000-0002-6852-1588 (2020) Adaptive divergence across Southern Ocean gradients in the pelagic diatomFragilariopsis kerguelensis. , Molecular Ecology, 24 , pp. 4754-4756 . doi:10.1111/mec.15554 <https://doi.org/10.1111/mec.15554> , hdl:10013/epic.08c6c20a-4810-40b4-a319-bdbd832577e4 |
op_doi |
https://doi.org/10.1111/mec.15554 |
container_title |
Molecular Ecology |
container_volume |
29 |
container_issue |
24 |
container_start_page |
4913 |
op_container_end_page |
4924 |
_version_ |
1810481207327064064 |