Heterocyst glycolipids in surface sediments and water samples of the Amazon shelf
| Cobertura |
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 |
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| Data(s) |
29/01/2015
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| Resumo |
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. |
| Formato |
application/zip, 2 datasets |
| Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.842136 doi:10.1594/PANGAEA.842136 |
| Idioma(s) |
en |
| Publicador |
PANGAEA |
| Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
| Fonte |
Supplement to: Bale, Nicole J; Hopmans, Ellen C; Zell, Claudia; de Lima Sobrinho, Rodrigo; Kim, Jung-Hyun; Sinninghe Damsté, Jaap S; Villareal, Tracy A; Schouten, Stefan (2015): Long chain glycolipids with pentose head groups as biomarkers for marine endosymbiotic heterocystous cyanobacteria. Organic Geochemistry, 81, 1-7, doi:10.1016/j.orggeochem.2015.01.004 |
| Palavras-Chave | #1-(O-hexose)-3,25,27-octacosanetriol per unit mass organic carbon; 1-(O-hexose)-3,25-hexacosanediol; 1-(O-hexose)-3,25-hexacosanediol per unit mass organic carbon; 1-(O-hexose)-3,27-octacosanediol; 1-(O-hexose)-3,27-octacosanediol per unit mass organic carbon; 1-(O-hexose)-3-keto-25,27-octacosanediol per unit mass organic carbon; 1-(O-hexose)-3-keto-25-hexacosanol; 1-(O-hexose)-3-keto-25-hexacosanol per unit mass organic carbon; 1-(O-hexose)-3-keto-27-octacosanol; 1-(O-hexose)-3-keto-27-octacosanol per unit mass organic carbon; 1-(O-ribose)-3,27,29-triacontanetriol.1 per unit mass organic carbon; 1-(O-ribose)-3,29,31-dotriacontanetriol per unit mass organic carbon; 1-(O-ribose)-3,29-triacontanediol per unit mass organic carbon; C5 HG IX/OC; C5 HG VII/OC; C5 HG VIII/OC; C6 HG I; C6 HG I/OC; C6 HG II; C6 HG II/OC; C6 HG III; C6 HG III/OC; C6 HG IV; C6 HG IV/OC; C6 HG V/OC; C6 HG VI/OC; Carbon, organic, total; Depth; DEPTH, sediment/rock; DEPTH, water; Depth water; Event; ru = mass spectrometer response units; Temp; Temperature, water; TOC |
| Tipo |
Dataset |
