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GNPS - Decoding the lipid signaling molecular network of marine symbiosis

ABSTRACT: Multiple species of symbiotic Anthozoa sampled under distinct environmental conditions, mainly during the marine heat wave of 2024. In addition, samples of other aquatic symbiosis systems. Species include: Isopora palifera, Desmophyllum pertusum, Alcyonium digitatum, Luidia sarsi, Cladocopium goreaui, Durusdinium trenchii, Chaetoceros affinis, Richelia sp. Untargeted LC-MS/MS acquisition was performed on a Vanquish Flex UHPLC system coupled to an Orbitrap Exploris 240 (Thermo Fisher Scientific, Bremen, Germany). Chromatographic separation was performed on a Kinetex 2.6 um 100 A pore size Polar C18 reversed phase UHPLC column 100 x 2.1 mm (Phenomenex, Torrance, CA)

INSTRUMENT(S): Orbitrap Exploris 240

ORGANISM(S): Richelia Sp. (ncbitaxon:2053605) Durusdinium Trenchii (ncbitaxon:1381693) Alcyonium Digitatum (ncbitaxon:51768) Luidia Sarsi (ncbitaxon:290514) Chaetoceros Affinis (ncbitaxon:426623) Cladocopium Goreaui (ncbitaxon:2562237) Desmophyllum Pertusum (ncbitaxon:174260) Isopora Palifera (ncbitaxon:105615)

SUBMITTER: Marina Botana

PROVIDER: MSV000100981 | GNPS | Thu Feb 26 10:04:00 GMT 2026

REPOSITORIES: GNPS

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Project description:Background: Cnidarian – dinoflagellate intracellular symbioses are one of the most important mutualisms in the marine environment. They form the trophic and structural foundation of coral reef ecosystems, and have played a key role in the evolutionary radiation and biodiversity of cnidarian species. Despite the prevalence of these symbioses, we still know very little about the molecular modulators that initiate, regulate, and maintain the interaction between these two different biological entities. In this study, we conducted a comparative host anemone transcriptome analysis using a cDNA microarray platform to identify genes involved in cnidarian – algal symbiosis. Results: We detected statistically significant differences in host gene expression profiles between sea anemones (Anthopleura elegantissima) in a symbiotic and non-symbiotic state. The group of genes, whose expression is altered, is diverse, suggesting that the molecular regulation of the symbiosis is governed by changes in multiple cellular processes. In the context of cnidarian – dinoflagellate symbioses, we discuss pivotal host gene expression changes involved in lipid metabolism, cell adhesion, cell proliferation, apoptosis, and oxidative stress. Conclusion: Our data do not support the existence of symbiosis-specific genes involved in controlling and regulating the symbiosis. Instead, it appears that the symbiosis is maintained by altering expression of existing genes involved in vital cellular processes. Specifically, the finding of key genes involved in cell cycle progression and apoptosis have led us to hypothesize that a suppression of apoptosis, together with a deregulation of the host cell cycle, create a platform that might be necessary for symbiont and/or symbiont-containing host cell survival. This first comprehensive molecular examination of the cnidarian – dinoflagellate associations provides critical insight into the maintenance and regulation of the symbiosis. Keywords: comparative genomic hybridization

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GNPS - Decoding the lipid signaling molecular network of marine symbiosis

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