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. 2017 Sep 13;16(9):1435-1440.
doi: 10.1039/c7pp00216e.

Identification of Hispidin as a Bioluminescent Active Compound and Its Recycling Biosynthesis in the Luminous Fungal Fruiting Body

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Identification of Hispidin as a Bioluminescent Active Compound and Its Recycling Biosynthesis in the Luminous Fungal Fruiting Body

Yuichi Oba et al. Photochem Photobiol Sci. .

Abstract

We previously showed that luminous fungi share a common mechanism in bioluminescence, and identified hispidin as a luciferin precursor in Neonothopanus nambi mycelium. Here we showed the presence of hispidin as a bioluminescent active compound at 25-1000 pmol g-1 in the fruiting bodies of Mycena chlorophos, Omphalotus japonicus, and Neonothopanus gardneri. These results suggest that luminous mushrooms contain hispidin as a luciferin precursor. We also found that non-luminous "young" fruiting bodies exhibited luminescence by hispidin treatment. Furthermore, we observed a gradual luminescence enhancement of the cell-free fruiting body extract by the addition of hispidin biosynthetic components, namely caffeic acid, ATP and malonyl-CoA. These findings suggest that continuous weak glow of luminous mushrooms is regulated by slow recycling biosynthesis of hispidin.

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