Abstract：
:Pyrosomes are tunicates in the phylum Chordata, which also contains vertebrates. Their gigantic blooms play important ecological and biogeochemical roles in oceans. Pyrosoma, meaning "fire-body", derives from their brilliant bioluminescence. The biochemistry of this light production is unknown, but has been hypothesized to be bacterial in origin. We found that mixing coelenterazine-a eukaryote-specific luciferin-with Pyrosoma atlanticum homogenate produced light. To identify the bioluminescent machinery, we sequenced P. atlanticum transcriptomes and found a sequence match to a cnidarian luciferase (RLuc). We expressed this novel luciferase (PyroLuc) and, combined with coelenterazine, it produced light. A similar gene was recently predicted from a bioluminescent brittle star, indicating that RLuc-like luciferases may have evolved convergently from homologous dehalogenases across phyla (Cnidaria, Echinodermata, and Chordata). This report indicates that a widespread gene may be able to functionally converge, resulting in bioluminescence across animal phyla, and describes and characterizes the first putative chordate luciferase.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Tessler M,Gaffney JP,Oliveira AG,Guarnaccia A,Dobi KC,Gujarati NA,Galbraith M,Mirza JD,Sparks JS,Pieribone VA,Wood RJ,Gruber DFdoi
10.1038/s41598-020-73446-wsubject
Has Abstractpub_date
2020-10-20 00:00:00pages
17724issue
1issn
2045-2322pii
10.1038/s41598-020-73446-wjournal_volume
10pub_type
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