Metabolites (Nov 2022)

Metabolomics Characterization of Scleractinia Corals with Different Life-History Strategies: A Case Study about <i>Pocillopora meandrina</i> and <i>Seriatopora hystrix</i> in the South China Sea

  • Jiying Pei,
  • Shiguo Chen,
  • Kefu Yu,
  • Junjie Hu,
  • Yitong Wang,
  • Jingjing Zhang,
  • Zhenjun Qin,
  • Ruijie Zhang,
  • Ting-Hao Kuo,
  • Hsin-Hsiang Chung,
  • Cheng-Chih Hsu

DOI
https://doi.org/10.3390/metabo12111079
Journal volume & issue
Vol. 12, no. 11
p. 1079

Abstract

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Life-history strategies play a critical role in susceptibility to environmental stresses for Scleractinia coral. Metabolomics, which is capable of determining the metabolic responses of biological systems to genetic and environmental changes, is competent for the characterization of species’ biological traits. In this study, two coral species (Pocillopora meandrina and Seriatopora hystrix in the South China Sea) with different life-history strategies (“competitive” and “weedy”) were targeted, and untargeted mass spectrometry metabolomics combined with molecular networking was applied to characterize their differential metabolic pathways. The results show that lyso-platelet activating factors (lyso-PAFs), diacylglyceryl carboxyhydroxymethylcholine (DGCC), aromatic amino acids, and sulfhydryl compounds were more enriched in P. meandrina, whereas new phospholipids, dehydrated phosphoglycerol dihydroceramide (de-PG DHC), monoacylglycerol (MAG), fatty acids (FA) (C S. hystrix. The metabolic pathways involved immune response, energy metabolism, cellular membrane structure regulation, oxidative stress system, secondary metabolite synthesis, etc. While the immune system (lysoPAF) and secondary metabolite synthesis (aromatic amino acids and sulfhydryl compounds) facilitates fast growth and resistance to environmental stressors of P. meandrina, the cell membrane structure (structural lipids), energy storage (storage lipids), oxidative stress system (short peptides), and secondary metabolite synthesis (guanidine compounds) are beneficial to the survival of S. hystrix in harsh conditions. This study contributes to the understanding of the potential molecular traits underlying life-history strategies of different coral species.

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