Proximal to distal gradient of luminescence in the arm of Amphiura filiformis (Echinodermata-Ophiuroidea)
(2010) Echinoderms: Durham Proceedings of the 12th International Echinoderm Conference — ISBN: [978-0-415-40819-6], p. 355–357, published
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- Abstract
- Bioluminescence is a widespread phenomenon. Among benthic phyla, echinoderms contain some luminous representatives. The emission of visible light originates from a biochemical reaction where chemical energy is transformed into luminous energy. Two bioluminescent systems exist to date: the luciferin- luciferase and the photoprotein one. We here report for the first time the presence of a luciferin-luciferase system in Amphiura filiformis. New assay methods have been developed to detect luciferin and luciferase contents in A. filiformis tissues. This work shows that luciferin/luciferase contents increase from arm base to the arm tip; this increase parallels the observed raise of the light intensity induced by potassium chloride (KCl) depolarisation of isolated arm. This new approach will provide a useful tool to study functional recovery of luminous capabilities during regeneration in Amphiura filiformis.
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Delval, S., & Mallefet, J. (2010). Proximal to distal gradient of luminescence in the arm of Amphiura filiformis (Echinodermata-Ophiuroidea). In Edited by Larry G Harris, S Anne Böttger, Charles W Walker, and Michael P Lesser (ed.), Echinoderms: Durham Proceedings of the 12th International Echinoderm Conference (p. p. 355–357). CRC Press. https://doi.org/10.1201/9780203869543-c55