title: Chill-induced morphological alterations in Anacystis Nidulans as a function of growth temperature.
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.
authors: Department of Botany and Cell Research Institute, University of Texas, 78712, Austin, TX, USA.
authors: J J
authors: JJ
authors: Brand
authors: S J
authors: SJ
authors: Kirchanski
authors: R
authors: R
authors: Ramirez-Mitchell