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8657994 
Journal Article 
The molecular species of phospholipids of the cold-water soft coral Gersemia rubiformis (Ehrenberg, 1834) (Alcyonacea, Nephtheidae) 
Imbs, AB; Dang, LTP 
2017 
1 
Russian Journal of Marine Biology
ISSN: 1063-0740
EISSN: 1608-3377 
43 
3 
239-244 
WOS:000404712200009 
The chemical structures and contents of 68 molecular species of ethanolamine glycerophospholipids (PE), choline glycerophospholipids (PC), serine glycerophospholipids (PS), and inositol glycerophospholipids (PI) were determined in the asymbiotic soft coral Gercemia rubiformis (Ehrenberg, 1834) from the Sea of Okhotsk by the method of tandem high-resolution mass spectrometry. The major molecular species were 16:1e/20:4 PE, 16:0e/20:4 PC, 20:1/24:5 PS, and 16:0/24:5 PI. This study showed a significant similarity of the polar lipidomes of G. rubiformis and tropical species of alcyonarians with symbiotic microalgae and revealed the basic characteristic of the polar lipidome of these alcyonarians. It was found that the 24:5n-6 and 24:6n-3 acids (chemotaxonomic markers of soft corals) concentrate in the acyl groups of the molecular species of PS and PI, which can be used as molecular lipid markers in the study of the symbiotic and trophic relationships of soft corals. 
phospholipids; lipid molecular species; tetracosapolyenoic fatty acids; corals; mass spectrometry; lipidomics