Articles | Volume 15, issue 4
https://doi.org/10.5194/bg-15-1229-2018
https://doi.org/10.5194/bg-15-1229-2018
Research article
 | 
01 Mar 2018
Research article |  | 01 Mar 2018

C5 glycolipids of heterocystous cyanobacteria track symbiont abundance in the diatom Hemiaulus hauckii across the tropical North Atlantic

Nicole J. Bale, Tracy A. Villareal, Ellen C. Hopmans, Corina P. D. Brussaard, Marc Besseling, Denise Dorhout, Jaap S. Sinninghe Damsté, and Stefan Schouten

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Cited articles

Abramson, L., Lee, C., Liu, Z., Wakeham, S. G., and Szlosek, J.: Exchange between suspended and sinking particles in the northwest Mediterranean as inferred from the organic composition of in situ pump and sediment trap samples, Limnol. Oceanogr., 55, 725–739, https://doi.org/10.4319/lo.2010.55.2.0725, 2010.
Abreu-Grobois, F. A., Billyard, T. C., and Walton, T. J.: Biosynthesis of heterocyst glycolipids of Anabaena cylindrica, Phytochemistry, 16, 351–354, https://doi.org/10.1016/0031-9422(77)80063-0, 1977.
Bale, N., de Vries, S., Hopmans, E. C., Sinninghe Damsté, J. S., and Schouten, S.: A method for quantifying heterocyst glycolipids in biomass and sediments, Org. Geochem., 110, 33–35, https://doi.org/10.1016/j.orggeochem.2017.04.010, 2017.
Bale, N. J., Villanueva, L., Hopmans, E. C., Schouten, S., and Sinninghe Damsté, J. S.: Different seasonality of pelagic and benthic Thaumarchaeota in the North Sea, Biogeosciences, 10, 7195–7206, https://doi.org/10.5194/bg-10-7195-2013, 2013.
Bale, N. J., Hopmans, E. C., Zell, C., Sobrinho, R. L., Kim, J.-H., Sinninghe Damsté, J. S., Villareal, T. A., and Schouten, S.: Long chain glycolipids with pentose head groups as biomarkers for marine endosymbiotic heterocystous cyanobacteria, Org. Geochem., 81, 1–7, https://doi.org/10.1016/j.orggeochem.2015.01.004, 2015.
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Short summary
Associations between diatoms and N-fixing cyanobacteria (diatom–diazotroph associations, DDAs) play an important role in the N cycle of the tropical North Atlantic. Heterocysts are the site of N fixation and contain unique glycolipids. We measured these glycolipids in the water column and surface sediment from the tropical North Atlantic. We found a significant correlation between the concentration of glycolipid and of DDAs, strengthening their application as biomarkers.
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