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A novel heterocyst glycolipid detected in a pelagic N2-fixing cyanobacterium of the genus Calothrix

Publication date:

Available online 30 June 2018


Source:Organic Geochemistry

Author(s): Nicole J. Bale, Ellen C. Hopmans, Denise Dorhout, Lucas J. Stal, Michele Grego, Judith van Bleijswijk, Jaap S. Sinninghe Damsté, Stefan Schouten

Previous studies have shown that heterocyst glycolipids (HGs) are unique markers for N2-fixing heterocystous cyanobacteria. In this study, the HGs of a marine pelagic Calothrix sp. CCY1611 isolated from the tropical western North Atlantic were analyzed by ultra-high pressure liquid chromatography–high resolution mass spectrometry and it was shown that this organism contains an unusual C28 triol HG with a methylated C6 sugar (methyl-HG28 triol) head group. Gas chromatography–mass spectrometry analysis of the sugar released from the novel HG by acid methanolysis revealed that the sugar is likely 6-O-methyl-β-D-glucopyranose. We propose that this methyl-HG28 triol is a potential biomarker for pelagic members of the genus Calothrix.





Autoren:   Author(s): Nicole J. Bale, Ellen C. Hopmans, Denise Dorhout, Lucas J. Stal, Michele Grego, Judith van Bleijswijk, Jaap S. Sinninghe Damsté, Stefan Schouten
Journal:   Organic Geochemistry
Jahrgang:   2018
Erscheinungsdatum:   01.07.2018
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