Photoadaptation in marine Arctic diatoms

Springer Science and Business Media LLC - Tập 9 - Trang 479-486 - 1989
Else Nøst Hegseth1
1Trondhjem Biological Station, University of Trondheim, Trondheim, Norway

Tóm tắt

Photoadaptation in some marine Arctic diatoms has been studied. Thalassiosira antarctica, Nitzschia delicatissima and Chaetoceros furcellatus were grown at-0.5°C and various irradiances and continuous light. Growth and cellular chlorophyll were followed during transitional phase after the algae had been transferred from one irradiance to another. Adaptation time for cellular chlorophyll was linearly related to the gradient in irradiance, and adaptation to transfer from high to low light was faster than from low to high light. Adaptation time was found to be species dependent, and Arctic diatoms growing at low temperature seemed to adapt as fast as temperate species.

Tài liệu tham khảo

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