Abstract
Cells of Anacystis nidulans grown at 25 or 30°C were examined both by thin-section and freeze-fracture electron microscopy. Cells grown at either temperature appeared similar when fixed at the growth temperature prior to observation. When cells were chilled to near 0°C for 30 min prior to fixation, those previously grown at 25° appeared unchanged as judged by thin sectioning while those grown at 39° showed considerable morphological alteration. Freeze fracture showed particle aggregation (more pronounced in 39°-grown cells) indicating lipid-phase separation in cells chilled prior to fixation. The phase separation was totally reversed by rewarming the chilled, 25°-grown cells to their growth temperature but was only partially reversed by rewarming chilled, 39°-grown cells. These results correlate with other effects of chilling seen in Anacystis cells grown at different temperatures.
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Brand, J.J., Kirchanski, S.J. & Ramirez-Mitchell, R. Chill-induced morphological alterations in Anacystis Nidulans as a function of growth temperature. Planta 145, 63–68 (1979). https://doi.org/10.1007/BF00379928
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DOI: https://doi.org/10.1007/BF00379928