Plant Physiol.
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Plant Physiology 80:415-419 (1986)
© 1986 American Society of Plant Biologists

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Articles

Primary Role of the Cytoplasmic Membrane in Thermal Acclimation Evidenced in Nitrate-Starved Cells of the Blue-Green Alga, Anacystis nidulans

Zoltán Gombos and László Vigh

Institute of Plant Physiology, Biological Research Center Hungarian Academy of Sciences, P.O. Box 521, 6701 Szeged, Hungary, Institute of Biochemistry, Biological Research Center Hungarian Academy of Sciences, P.O. Box 521, 6701 Szeged, Hungary

The lipid phase transition of the cytoplasmic membrane and the chilling susceptibility were studied in nitrate-starved Anacystis nidulans cells. Nitrate starvation resulted in the disappearance of the thylakoid membrane system, without any effect on chilling susceptibility. The chilling susceptibility of the algal cells depended on the growth temperature. Temperatures of lipid phase transitions of the cytoplasmic membranes were detected by chilling-induced spectral changes in the carotenoid region, in vivo. These values were identical to those of cultures containing intact thylakoid systems. Our results suggest that cytoplasmic membrane plays a determinative role in the thermal acclimation of the alga cells.




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Z. Varkonyi, K. Masamoto, M. Debreczeny, O. Zsiros, B. Ughy, Z. Gombos, I. Domonkos, T. Farkas, H. Wada, and B. Szalontai
Low-temperature-induced accumulation of xanthophylls and its structural consequences in the photosynthetic membranes of the cyanobacterium Cylindrospermopsis raciborskii: An FTIR spectroscopic study
PNAS, February 19, 2002; 99(4): 2410 - 2415.
[Abstract] [Full Text] [PDF]


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ASPB Publications PLANT PHYSIOLOGY THE PLANT CELL
Copyright © 1986 by the American Society of Plant Biologists