Ocean current patterns drive the worldwide colonization of eelgrass (Zostera marina).

Yu, Lei , Khachaturyan, Marina, Matschiner, Michael, Healey, Adam, Bauer, Diane, Cameron, Brenda, Cusson, Mathieu, Emmett Duffy, J., Joel Fodrie, F., Gill, Diana, Grimwood, Jane, Hori, Masakazu, Hovel, Kevin, Hughes, A. Randall, Jahnke, Marlene, Jenkins, Jerry, Keymanesh, Keykhosrow, Kruschel, Claudia, Mamidi, Sujan, Menning, Damian M., Moksnes, Per-Olav, Nakaoka, Masahiro, Pennacchio, Christa, Reiss, Katrin, Rossi, Francesca, Ruesink, Jennifer L., Schultz, Stewart T., Talbot, Sandra, Unsworth, Richard, Ward, David H., Dagan, Tal, Schmutz, Jeremy, Eisen, Jonathan A., Stachowicz, John J., Van De Peer, Yves, Olsen, Jeanine L. and Reusch, Thorsten B. H. (2023) Ocean current patterns drive the worldwide colonization of eelgrass (Zostera marina). Open Access Nature Plants, 9 . pp. 1207-1220. DOI 10.1038/s41477-023-01464-3.

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Abstract

Currents are unique drivers of oceanic phylogeography and thus determine the distribution of marine coastal species, along with past glaciations and sea-level changes. Here we reconstruct the worldwide colonization history of eelgrass (Zostera marina L.), the most widely distributed marine flowering plant or seagrass from its origin in the Northwest Pacific, based on nuclear and chloroplast genomes. We identified two divergent Pacific clades with evidence for admixture along the East Pacific coast. Two west-to-east (trans-Pacific) colonization events support the key role of the North Pacific Current. Time-calibrated nuclear and chloroplast phylogenies yielded concordant estimates of the arrival of Z. marina in the Atlantic through the Canadian Arctic, suggesting that eelgrass-based ecosystems, hotspots of biodiversity and carbon sequestration, have only been present there for ~243 ky (thousand years). Mediterranean populations were founded ~44 kya, while extant distributions along western and eastern Atlantic shores were founded at the end of the Last Glacial Maximum (~19 kya), with at least one major refuge being the North Carolina region. The recent colonization and five- to sevenfold lower genomic diversity of the Atlantic compared to the Pacific populations raises concern and opportunity about how Atlantic eelgrass might respond to rapidly warming coastal oceans.

Document Type: Article
Additional Information: Research Briefing attached! In the version of the article initially published, Yves Van de Peer’s name appeared incorrectly as Yves Van De Peer. In addition, two of Yves Van de Peer’s affiliations were wrongly combined into a single affiliation. These have been separated, and now read: Department of Plant Biotechnology and Bioinformatics, Ghent University, Gent, Belgium and VIB-UGent Center for Plant Systems Biology, Gent, Belgium. These errors have been corrected in the HTML and PDF versions of the article.
Keywords: Marine biology; plant evolution; population genetics
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EV Marine Evolutionary Ecology
Kiel University
Main POF Topic: PT6: Marine Life
Refereed: Yes
Open Access Journal?: No
Publisher: Nature Research
Related URLs:
Date Deposited: 31 Jul 2023 08:37
Last Modified: 07 Feb 2024 15:44
URI: https://oceanrep.geomar.de/id/eprint/59016

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