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Chemical Diversity as a Function of Temperature in Six Northern Diatom Species
MabCent-SFI, University of Tromsø, N-9037 Tromsø, Norway
Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, University of Tromsø, N-9037 Tromsø, Norway
Marbio, University of Tromsø, N-9037 Tromsø, Norway
* Author to whom correspondence should be addressed.
Received: 12 August 2013; in revised form: 17 October 2013 / Accepted: 17 October 2013 / Published: 30 October 2013
Abstract: In this study, we investigate how metabolic fingerprints are related to temperature. Six common northern temperate diatoms (Attheya longicornis, Chaetoceros socialis, Chaetoceros furcellatus, Porosira glacialis, Skeletonema marinoi, and Thalassiosira gravida) were cultivated at two different temperatures, 0.5 and 8.5 °C. To exclude metabolic variations due to differences in growth rates, the growth rates were kept similar by performing the experiments under light limited conditions but in exponential growth phase. Growth rates and maximum quantum yield of photosynthesis were measured and interpreted as physiological variables, and metabolic fingerprints were acquired by high-resolution mass spectrometry. The chemical diversity varied substantially between the two temperatures for the tested species, ranging from 31% similarity for C. furcellatus and P. glacialis to 81% similarity for A. longicornis. The chemical diversity was generally highest at the lowest temperature.
Keywords: diatoms; physiology; metabolic fingerprinting; temperature
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Huseby, S.; Degerlund, M.; Eriksen, G.K.; Ingebrigtsen, R.A.; Eilertsen, H.C.; Hansen, E. Chemical Diversity as a Function of Temperature in Six Northern Diatom Species. Mar. Drugs 2013, 11, 4232-4245.
Huseby S, Degerlund M, Eriksen GK, Ingebrigtsen RA, Eilertsen HC, Hansen E. Chemical Diversity as a Function of Temperature in Six Northern Diatom Species. Marine Drugs. 2013; 11(11):4232-4245.
Huseby, Siv; Degerlund, Maria; Eriksen, Gunilla K.; Ingebrigtsen, Richard A.; Eilertsen, Hans C.; Hansen, Espen. 2013. "Chemical Diversity as a Function of Temperature in Six Northern Diatom Species." Mar. Drugs 11, no. 11: 4232-4245.