Unique carotenoid lactoside, P457, in Symbiodinium sp. of dinoflagellate.

Takahiro Wakahama, Hidetoshi Okuyama, Takashi Maoka, Shinichi Takaichi

Course in Environmental Molecular Biology and Microbial Ecology, Graduate School of Environmental Science, Hokkaido University, Sapporo, Japan.

Acta biochimica Polonica 2012

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The dinoflagellates are a large group of unicellular alge in marine and fresh water. Some are an endosymbiont of marine animals. Photosynthetic dinoflagellates have peridinin, a light-harvesting carotenoid. In addition, a unique carotenoid, P457, was found from Amphinidium. The presence of P457 in Symbiodinium derived from marine animals has not been reported. We reconfirmed the molecular structure of P457, a neoxanthin-like carotenoid with an aldehyde group and a lactoside, from Symbiodinium sp. NBRC 104787 isolated from a sea anemone. In addition, we investigated the distribution of P457 and peridinin in various Symbiodinium and scleractinian coral species, and possible biosynthetic pathways of these carotenoids are proposed.

Citation

Takahiro Wakahama, Hidetoshi Okuyama, Takashi Maoka, Shinichi Takaichi. Unique carotenoid lactoside, P457, in Symbiodinium sp. of dinoflagellate. Acta biochimica Polonica. 2012;59(1):155-7