There are currently 163 species of Geodia Lamarck, 1815 described worldwide, many of which are found in deep waters, but none of which have been recorded from the Southwest Indian Ridge (SWIR). Spicule morphology and barcodes (Folmer COI, 28S (C2D2), partial 18S) suggest that a specimen of Geodia collected on the SWIR at a depth of 2236 m is closely comparable to Geodia barretti Bowerbank, 1858. Geodia barretti is the most studied and thus well-known deep-sea Geodia species, due to its wide North Atlantic distribution and key role in boreal sponge grounds. This unexpected and markedly disjunct record would extend the distribution range of this species considerably, consequently challenging our knowledge about interoceanic deep-sea sponges.
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There are currently 163 species of Geodia Lamarck, 1815 described worldwide, many of which are found in deep waters, but none of which have been recorded from the Southwest Indian Ridge (SWIR). Spicule morphology and barcodes (Folmer COI, 28S (C2D2), partial 18S) suggest that a specimen of Geodia collected on the SWIR at a depth of 2236 m is closely comparable to Geodia barretti Bowerbank, 1858. Geodia barretti is the most studied and thus well-known deep-sea Geodia species, due to its wide North Atlantic distribution and key role in boreal sponge grounds.
View Article and Find Full Text PDFWhole genome sequence of the deep-sea sponge Geodia barretti (Metazoa, Porifera, Demospongiae).
G3 (Bethesda)
September 2023
Pharmacognosy, Department of Pharmaceutical Biosciences, Uppsala University, Uppsala 751 24, Sweden.
Sponges are among the earliest branching extant animals. As such, genetic data from this group are valuable for understanding the evolution of various traits and processes in other animals. However, like many marine organisms, they are notoriously difficult to sequence, and hence, genomic data are scarce.
View Article and Find Full Text PDFCandidatus Nemesobacterales is a sponge-specific clade of the candidate phylum Desulfobacterota adapted to a symbiotic lifestyle.
ISME J
November 2023
Laboratory of Microbiology, Wageningen University & Research, Stippeneng 4, 6708WE, Wageningen, The Netherlands.
Members of the candidate phylum Dadabacteria, recently reassigned to the phylum Candidatus Desulfobacterota, are cosmopolitan in the marine environment found both free-living and associated with hosts that are mainly marine sponges. Yet, these microorganisms are poorly characterized, with no cultured representatives and an ambiguous phylogenetic position in the tree of life. Here, we performed genome-centric metagenomics to elucidate their phylogenomic placement and predict the metabolism of the sponge-associated members of this lineage.
View Article and Find Full Text PDFGeobarrettin D, a Rare Herbipoline-Containing 6-Bromoindole Alkaloid from .
Molecules
March 2023
Department of Chemistry and Biochemistry, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, CA 92093, USA.
Geobarrettin D (), a new bromoindole alkaloid, was isolated from the marine sponge collected from Icelandic waters. Its structure was elucidated by 1D, and 2D NMR (including H-N HSQC, H-N HMBC spectra), as well as HRESIMS data. Geobarrettin D () is a new 6-bromoindole featuring an unusual purinium herbipoline moiety.
View Article and Find Full Text PDFFirst continuous marine sponge cell line established.
Sci Rep
April 2023
Bioprocess Engineering, Wageningen University and Research, Wageningen, The Netherlands.
The potential of sponge-derived chemicals for pharmaceutical applications remains largely unexploited due to limited available biomass. Although many have attempted to culture marine sponge cells in vitro to create a scalable production platform for such biopharmaceuticals, these efforts have been mostly unsuccessful. We recently showed that Geodia barretti sponge cells could divide rapidly in M1 medium.
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