A novel heterocyst glycolipid detected in a pelagic N2-fixing cyanobacterium of the genus Calothrix
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Publication date
2018-09-01
Authors
Bale, Nicole J.
Hopmans, Ellen C.
Dorhout, Denise
Stal, Lucas J.
Grego, Michele
van Bleijswijk, Judith
Sinninghe Damste, Jaap S.
Schouten, S.
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Article
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taverne
Abstract
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.
Keywords
6-O-methyl-β-D-glucopyranose, Calothrix, Heterocyst glycolipids, Heterocystous cyanobacteria, N-fixation, Pelagic, Taverne, Geochemistry and Petrology, SDG 14 - Life Below Water
Citation
Bale, N J, Hopmans, E C, Dorhout, D, Stal, L J, Grego, M, van Bleijswijk, J, Sinninghe Damsté, J S & Schouten, S 2018, 'A novel heterocyst glycolipid detected in a pelagic N 2 -fixing cyanobacterium of the genus Calothrix', Organic Geochemistry, vol. 123, pp. 44-47. https://doi.org/10.1016/j.orggeochem.2018.06.009