Evidence map›Paper›PMID 41696027›Full record

ArticleISME communications2026

Accurate monitoring of substrate-dependent growth reveals ecotypic differentiation among marine yeasts.

Berin Sena Arslan-Gatz, Mikkel Schultz-Johansen, Tom-Niklas Hollwedel, Sofie Niggemeier, Daniel Bartosik, Sreelakshmi Lakshmanan, Rolf Nimzyk, Antje Wichels, Gunnar Gerdts, Jan-Hendrik Hehemann and 2 more

Abstract read
In one paragraph

Article in ISME communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors.

Berin Sena Arslan-GatzMARUM, FB2, Molecular Ecology, University of Bremen, Leobener Str. 10, 28359 Bremen, Bremen, Germany.
Mikkel Schultz-JohansenMARUM, FB2, Marine Glycobiology, University of Bremen, James Watt Str. 1, 28359 Bremen, Bremen, Germany.ORCID https://orcid.org/0000-0001-7868-1078
Tom-Niklas HollwedelMARUM, FB2, Marine Chemistry, University of Bremen, James Watt Str. 1, 28359 Bremen, Bremen, Germany.
Sofie NiggemeierMARUM, FB2, Marine Glycobiology, University of Bremen, James Watt Str. 1, 28359 Bremen, Bremen, Germany.
Daniel BartosikPharmaceutical Biotechnology, University of Greifswald, Friedrich-Ludwig-Jahn-Str. 17, 17489 Greifswald, Mecklenburg Western-Pomerania, Germany.ORCID https://orcid.org/0000-0002-5103-4564
Sreelakshmi LakshmananMARUM, FB2, Molecular Ecology, University of Bremen, Leobener Str. 10, 28359 Bremen, Bremen, Germany.
Rolf NimzykMARUM, FB2, Molecular Ecology, University of Bremen, Leobener Str. 10, 28359 Bremen, Bremen, Germany.
Antje WichelsBiologische Anstalt Helgoland, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Postfach 180, 27483 Helgoland, Schleswig-Holstein, Germany.
Gunnar GerdtsBiologische Anstalt Helgoland, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Postfach 180, 27483 Helgoland, Schleswig-Holstein, Germany.
Jan-Hendrik HehemannMARUM, FB2, Marine Glycobiology, University of Bremen, James Watt Str. 1, 28359 Bremen, Bremen, Germany.ORCID https://orcid.org/0000-0002-8700-2564
Tilmann HarderMARUM, FB2, Marine Chemistry, University of Bremen, James Watt Str. 1, 28359 Bremen, Bremen, Germany.
Marlis ReichMARUM, FB2, Molecular Ecology, University of Bremen, Leobener Str. 10, 28359 Bremen, Bremen, Germany.ORCID https://orcid.org/0000-0001-7537-5809

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Phytoplankton-derived dissolved organic matter (DOM) sustains complex marine microbial communities, yet the role of marine fungi-particularly yeasts-remains understudied regarding their substrate preferences, enzymatic strategies, and ecological relevance. We developed a novel protocol to investigate substrate-specific growth of marine fungal isolates under defined conditions and high temporal resolution. Using the β-1,3-glucan laminarin-a major marine storage polysaccharide of phytoplankton-and its oligomeric and monomeric breakdown products, we characterized growth and substrate utilization profiles of eleven marine yeast isolates from the epipelagic zone at Helgoland Roads, North Sea. Statistical analyses of growth kinetics distinguished four ecotypes with distinct substrate utilization patterns, quantified via phenol-sulfuric acid assays. Fluorophore-assisted carbohydrate electrophoresis (FACE) revealed the lack of endo-laminarinase activity, suggesting laminarin degradation depends on exo-acting enzymes. FACE also revealed a high diversity of short-chained laminarin-based intermediates accumulating over time, demonstrating that yeasts enhance chemical complexity during laminarin degradation and may fuel other microbes within the microbial loop. Representatives of each yeast ecotype were found to match abundant operational taxonomic units (OTU) in sequence similarity analyses of epipelagic mycoplankton datasets. This supports their ecological success and diverse substrate strategies. Rather than acting solely as opportunists, these yeasts may actively shape DOM turnover and carbon cycling within the microbial loop. Our study highlights a robust experimental approach for resolving functional diversity among marine yeasts and underpins their potential role in maintaining chemical diversity and substrate cross-feeding in the microbial loop.

Indexed as

carbon turnoverchemical diversitydegradationDOMlaminarinmarine fungimicrobial loopmycoplankton

Identifiers

PMID41696027
PMCPMC12903948

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.