Bale, Nicole Jane; Hopmans, Ellen C; Zell, Claudia; de Lima Sobrinho, Rodrigo; Kim, Jung-Hyun; Sinninghe Damsté, Jaap S; Villareal, Tracy A; Schouten, Stefan (2015): Heterocyst glycolipids in surface sediments and water samples of the Amazon shelf [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.842136, Supplement to: Bale, NJ et al. (2015): Long chain glycolipids with pentose head groups as biomarkers for marine endosymbiotic heterocystous cyanobacteria. Organic Geochemistry, 81, 1-7, https://doi.org/10.1016/j.orggeochem.2015.01.004
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Abstract:
Marine endosymbiotic heterocystous cyanobacteria make unique heterocyst glycolipids (HGs) containing pentose (C5) moieties. Functionally similar HGs with hexose (C6) moieties found in free-living cyanobacteria occur in the sedimentary record, but C5 HGs have not been documented in the natural environment. Here we developed a high performance liquid chromatography multiple reaction monitoring (MRM) mass spectrometry (HPLC-MS2) method specific for trace analysis of long chain C5HGs and applied it to cultures of Rhizosolenia clevei Ostenfeld and its symbiont Richelia intracellularis which were found to contain C5 HGs and no C6 HGs. The method was then applied to suspended particulate matter (SPM) and surface sediment from the Amazon plume region known to harbor marine diatoms carrying heterocystous cyanobacteria as endosymbionts. C5 HGs were detected in both marine SPM and surface sediments, but not in SPM or surface sediment from freshwater settings in the Amazon basin. Rather, the latter contained C6 HGs, established biomarkers for free-living heterocystous cyanobacteria. Our results indicate that the C5 HGs may be potential biomarkers for marine endosymbiotic heterocystous cyanobacteria.
Coverage:
Median Latitude: 0.480726 * Median Longitude: -51.884712 * South-bound Latitude: -3.467000 * West-bound Longitude: -60.780000 * North-bound Latitude: 4.460000 * East-bound Longitude: -42.740000
Date/Time Start: 2009-10-04T00:00:00 * Date/Time End: 2010-03-10T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Bale, NJ; Hopmans, EC; Zell, C et al. (2015): Heterocyst glycolipids in surface sediment samples of the Amazon shelf. https://doi.org/10.1594/PANGAEA.842134
- Bale, NJ; Hopmans, EC; Zell, C et al. (2015): Heterocyst glycolipids in water samples of the Amazon shelf. https://doi.org/10.1594/PANGAEA.842135