EXPLORATORY STUDIES ON THE PHYSIOLOGY AND ECOLOGY OF A PSYCHROPHILIC MARINE DIATOM 1

• Published in: Journal of Phycology
• Main Authors: Bunt, J. S., van H. Owens, Olga, Hoch, G.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1966
• Subjects: Antarctic; The Antarctic; Antarc*
• Online Access: http://dx.doi.org/10.1111/j.1529-8817.1966.tb04601.x; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1529-8817.1966.tb04601.x; https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1529-8817.1966.tb04601.x

SUMMARY The effect of light, of 2 wavelengths, and of 3 temperatures on the uptake and evolution of O 2 by the antarctic marine diatom , Fragilaria sublinearis, has been examined with mass spectrometry. The responses of this organism to light, in terms of O 2 exchange, were qualitatively similar to those recorded by Hoch et al. with the blue‐green Anacystis nidulans. In addition, distinctive temperature optima were indicated for O 2 , production and uptake, which help to explain the psychrophilic character of the diatom. The possibility of varying rates of O 2 uptake in the light being associated with photoassimilation of organic substrates has been discussed.