Chemical Diversity as a Function of Temperature in Six Northern Diatom Species

Marine Drugs

Siv Huseby²  Maria Degerlund¹  Gunilla K. Eriksen¹  Richard A. Ingebrigtsen¹  Hans Chr. Eilertsen¹ 

[1] Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, University of Tromsø, N-9037 Tromsø, Norway; E-Mails:;MabCent-SFI, University of Tromsø, N-9037 Tromsø, Norway; E-Mail:

关键词: diatoms;    physiology;    metabolic fingerprinting;    temperature;   

DOI  :  10.3390/md11114232

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.