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Strain-specific met...
Strain-specific metabarcoding reveals rapid evolution of copper tolerance in populations of the coastal diatom Skeletonema marinoi
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- Andersson, Björn (author)
- Gothenburg University,Göteborgs universitet,University of Gothenburg,Institutionen för marina vetenskaper,Department of marine sciences
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- Berglund, Olof (author)
- Lund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Akvatisk ekologi,Forskargrupper vid Lunds universitet,Division aquatic ecology,Department of Biology,Faculty of Science,Aquatic Ecology,Lund University Research Groups
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- Filipsson, Helena L. (author)
- Lund University,Lunds universitet,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Kvartärgeologi,Geologiska institutionen,Centre for Environmental and Climate Science (CEC),Faculty of Science,Quaternary Sciences,Department of Geology
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- Kourtchenko, Olga, 1980 (author)
- Gothenburg University,Göteborgs universitet,University of Gothenburg,Institutionen för marina vetenskaper,Department of marine sciences
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- Godhe, Anna (author)
- Gothenburg University,Göteborgs universitet,University of Gothenburg,Institutionen för marina vetenskaper,Department of marine sciences
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- Johannesson, Kerstin, 1955 (author)
- Gothenburg University,Göteborgs universitet,University of Gothenburg,Institutionen för marina vetenskaper,Department of marine sciences
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- Töpel, Mats H., 1973 (author)
- Gothenburg University,Göteborgs universitet,University of Gothenburg,IVL Swedish Environmental Research Institute,Institutionen för marina vetenskaper,Department of marine sciences
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- Pinder, Matthew I. M., 1990 (author)
- Gothenburg University,Göteborgs universitet,University of Gothenburg,Institutionen för marina vetenskaper,Department of marine sciences
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- Hoepfner, Lara (author)
- University of Gothenburg,University of Münster
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- Rengefors, Karin (author)
- Lund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Akvatisk ekologi,Forskargrupper vid Lunds universitet,Division aquatic ecology,Department of Biology,Faculty of Science,Centre for Environmental and Climate Science (CEC),Aquatic Ecology,Lund University Research Groups
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(creator_code:org_t)
- 2023
- 2023
- English.
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In: Molecular Ecology. - 0962-1083 .- 1365-294X.
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Abstract
Subject headings
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- Phytoplankton have short generation times, flexible reproduction strategies, large population sizes and high standing genetic diversity, traits that should facilitate rapid evolution under directional selection. We quantified local adaptation of copper tolerance in a population of the diatom Skeletonema marinoi from a mining-exposed inlet in the Baltic Sea and in a non-exposed population 100 km away. We hypothesized that mining pollution has driven evolution of elevated copper tolerance in the impacted population of S. marinoi. Assays of 58 strains originating from sediment resting stages revealed no difference in the average tolerance to copper between the two populations. However, variation within populations was greater at the mining site, with three strains displaying hyper-tolerant phenotypes. In an artificial evolution experiment, we used a novel intraspecific metabarcoding locus to track selection and quantify fitness of all 58 strains during co-cultivation in one control and one toxic copper treatment. As expected, the hyper-tolerant strains enabled rapid evolution of copper tolerance in the mining-exposed population through selection on available strain diversity. Within 42 days, in each experimental replicate a single strain dominated (30%–99% abundance) but different strains dominated the different treatments. The reference population developed tolerance beyond expectations primarily due to slowly developing plastic response in one strain, suggesting that different modes of copper tolerance are present in the two populations. Our findings provide novel empirical evidence that standing genetic diversity of phytoplankton resting stage allows populations to evolve rapidly (20–50 generations) and flexibly on timescales relevant for seasonal bloom progressions.
Subject headings
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Keyword
- adaptation
- copper tolerance
- diatoms
- phytoplankton
- strain metabarcoding
- strain-selection
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Andersson, Björn
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Berglund, Olof
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Filipsson, Helen ...
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Kourtchenko, Olg ...
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Godhe, Anna
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Johannesson, Ker ...
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Töpel, Mats H., ...
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Pinder, Matthew ...
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Hoepfner, Lara
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Rengefors, Karin
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Biochemistry and ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Environmental Sc ...
- Articles in the publication
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Molecular Ecolog ...
- By the university
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Lund University
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University of Gothenburg