Physiology of sea ice diatoms. II. Dark survival of three polar diatoms

Three polar sea ice diatoms were exposed to 5 months of darkness at −2 °C to simulate polar winter conditions. Cells were tested monthly for the ability to initiate growth of a population. A critical percentage (~1–100%) of a nonaxenic population of each diatom remained viable after 5 months of dark...

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Bibliographic Details
Published in:Canadian Journal of Microbiology
Main Authors: Palmisano, Anna C., Sullivan, Cornelius W.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1983
Subjects:
Genetics
Molecular Biology
Applied Microbiology and Biotechnology
General Medicine
Immunology
Microbiology
Sea ice
Online Access:http://dx.doi.org/10.1139/m83-026
http://www.nrcresearchpress.com/doi/pdf/10.1139/m83-026
Description
Summary:Three polar sea ice diatoms were exposed to 5 months of darkness at −2 °C to simulate polar winter conditions. Cells were tested monthly for the ability to initiate growth of a population. A critical percentage (~1–100%) of a nonaxenic population of each diatom remained viable after 5 months of dark incubation. Survival was generally enhanced by preconditioning cells with a simulated summer–winter transition (decreasing light and temperature, increasing salinity) or a simple light–dark transition; however, preconditioning was not essential to the survival of sea ice diatom cultures under winter conditions.

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