Insights into the bioluminescence systems of three sea pens (Cnidaria: Anthozoa): from de novo transcriptome analyses to biochemical assays.
(2025) Open Biology — Vol. 15, n° 4, p. 240262 (2025)
Files
DuchateletetalOpenBiol2025.pdf
Open Access - Adobe PDF
- 10.76 MB
Details
- Authors
Delroisse, Jérôme 
- Abstract
- Bioluminescence is the production of visible light by living organisms. It occurs through the oxidation of luciferin substrates catalysed by luciferase enzymes. Auxiliary proteins, such as fluorescent proteins and luciferin-binding proteins, can modify the light emitted wavelength or stabilize reactive luciferin molecules, respectively. Additionally, calcium ions are crucial for the luminescence across various species. Despite the large phylogenetic distribution of bioluminescent organisms, only a few systems have been comprehensively studied. Notably, cnidarian species of the genus utilize a coelenterazine-dependent luciferase, a calcium-dependent coelenterazine-binding protein and a green fluorescent protein. We investigated the bioluminescence of three sea pen species: , and (Pennatuloidea, Anthozoa). Their light-emission spectra reveal peaks at 510, 513 and 485 nm, respectively. A coelenterazine-based reaction was demonstrated in all three species. Using transcriptome analyses, we identified transcripts coding for luciferases, green fluorescent proteins and coelenterazine-binding proteins for and . Immunodetection confirmed the expression of luciferase in and . We also expressed recombinant luciferase of , confirming its activity. We highlighted the role of calcium ions in bioluminescence, possibly associated with the mechanism of substrate release at the level of coelenterazine-binding proteins. The study proposes a model for anthozoan bioluminescence, offering new avenues for future ecological and functional research on these luminous organisms.
- Affiliations
Citations
Duchatelet, L., Galeazzo, G. A., Coubris, C., Bridoux, L., Rezsohazy, R., Melo, M. R. S., Marek, M., Amaral, D. T., Dupont, S., Garbuglio de Oliveira, A., & Delroisse, J. (2025). Insights into the bioluminescence systems of three sea pens (Cnidaria: Anthozoa): from de novo transcriptome analyses to biochemical assays. Open Biology, 15(4), 240262. https://doi.org/10.1098/rsob.240262 (Original work published 2025)