ArticlePloS one2021
Bacterial precursors and unsaturated long-chain fatty acids are biomarkers of North-Atlantic deep-sea demosponges.
Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- The Chemistry and Pharmacology of the Alkaloid Barettin and Its Analogues from the Marine SpongeMarine drugs · 2026Review
- Removal of Volatile Organic Compounds by Marine Sponges: Implications for Coastal Bioremediation.Environmental science & technology · 2025Article
- Connectivity and Adaptation Patterns of the Deep-Sea Ground-Forming Sponge Geodia hentscheli Across Its Entire Distribution.Molecular biology and evolution · 2025Article
- GC/MS Fatty Acid Profile of Marine-Derived Actinomycetes from Extreme Environments: Chemotaxonomic Insights and Biotechnological Potential.Marine drugs · 2024Article
- High compositional and functional similarity in the microbiome of deep-sea sponges.The ISME journal · 2024Article
- Trophic ecology of Angolan cold-water coral reefs (SE Atlantic) based on stable isotope analyses.Scientific reports · 2023Article
- Fatty Acid Profiles of Some Siberian Bryophytes and Prospects of Their Use in Chemotaxonomy.Biomolecules · 2023Article
- Habitat types and megabenthos composition from three sponge-dominated high-Arctic seamounts.Scientific reports · 2022Article
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Authors and funding
9 authors.
Funding
Abstract
Sponges produce distinct fatty acids (FAs) that (potentially) can be used as chemotaxonomic and ecological biomarkers to study endosymbiont-host interactions and the functional ecology of sponges. Here, we present FA profiles of five common habitat-building deep-sea sponges (class Demospongiae, order Tetractinellida), which are classified as high microbial abundance (HMA) species. Geodia hentscheli, G. parva, G. atlantica, G. barretti, and Stelletta rhaphidiophora were collected from boreal and Arctic sponge grounds in the North-Atlantic Ocean. Bacterial FAs dominated in all five species and particularly isomeric mixtures of mid-chain branched FAs (MBFAs, 8- and 9-Me-C16:0 and 10- and 11-Me-C18:0) were found in high abundance (together ≥ 20% of total FAs) aside more common bacterial markers. In addition, the sponges produced long-chain linear, mid- and a(i)-branched unsaturated FAs (LCFAs) with a chain length of 24‒28 C atoms and had predominantly the typical Δ5,9 unsaturation, although the Δ9,19 and (yet undescribed) Δ11,21 unsaturations were also identified. G. parva and S. rhaphidiophora each produced distinct LCFAs, while G. atlantica, G. barretti, and G. hentscheli produced similar LCFAs, but in different ratios. The different bacterial precursors varied in carbon isotopic composition (δ13C), with MBFAs being more enriched compared to other bacterial (linear and a(i)-branched) FAs. We propose biosynthetic pathways for different LCFAs from their bacterial precursors, that are consistent with small isotopic differences found in LCFAs. Indeed, FA profiles of deep-sea sponges can serve as chemotaxonomic markers and support the concept that sponges acquire building blocks from their endosymbiotic bacteria.
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