Coral lipid bodies as the relay center interconnecting diel-dependent lipidomic changes in different cellular compartments

Hung Kai Chen, Li Hsueh Wang, Wan Nan U. Chen, Anderson B. Mayfield, Oren Levy, Chan Shing Lin, Chii Shiarng Chen

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

Lipid bodies (LBs) in the coral gastrodermal tissues are key organelles in the regulation of endosymbiosis and exhibit a diel rhythmicity. Using the scleractinian Euphyllia glabrescens collected across the diel cycle, we observed temporally dynamic lipid profiles in three cellular compartments: host coral gastrodermal cells, LBs, and in hospite Symbiodinium. Particularly, the lipidome varied over time, demonstrating the temporally variable nature of the coral-Symbiodinium endosymbiosis. The lipidome-scale data highlight the dynamic, light-driven metabolism of such associations and reveal that LBs are not only lipid storage organelles but also act as a relay center in metabolic trafficking. Furthermore, lipogenesis in LBs is significantly regulated by coral hosts and the lipid metabolites within holobionts featured predominantly triacylglycerols, sterol esters, and free fatty acids. Given these findings through a time-varied lipidome status, the present study provided valuable insights likely to be crucial to understand the cellular biology of the coral-Symbiodinium endosymbiosis.

Original languageEnglish
Article number3244
JournalScientific Reports
Volume7
Issue number1
DOIs
StatePublished - 12 Jun 2017

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© The Author(s) 2017.

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