Activation of lipid peroxidation as a mechanism of plant cell rearrangements under microgravity
|1Baranenko, VV |
1M.G. Kholodny Institute of Botany of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
|Kosm. nauka tehnol. 2007, 13 ;(2):075-079|
|Publication Language: Russian|
Activation of the lipid peroxidation (LP) is an universal process perturbating cell membranes under different unfavourable conditions. It is suggested that the LP can be one of the important mechanisms of plant cell rearrangements under altered gravity as well. The purpose of this investigation is to study the LP intensity in pea leaves and chloroplasts under 7- and 14-day clinorotation. The intensification of the LP under both terms of clinorotation, particularly under more prolonged, is detected. The adaptive increase in the unsaturated fatty acid content under 7-day clinorotation and their minor decrease under 14-day clinorotation are revealed. The lowering of electron transport rate in both photosystems, particularly in PSI, is established. Our results confirm that the LP may be one of the mechanisms of plant cell rearrangements under microgravity.
|Keywords: cell membranes, lipid peroxidation, microgravity|
1. Alberts B., Bray D., Lewis J., et al. Molecular biology of the cell, Transl. from Eng., Vol. 1, 415 p. (Mir, Moscow, 1994) [in Russian].
2. Merzlyak M. N. Activated Oxygen and Oxydative Processes in Plant Cell Membranes. In: Itogi Nauki i Tekhniki, Ser. Fiziol. Rast., 6, 167 p. (1989) [in Russian].
3. Merzlyak M. N., Pogosyan S. I. Pigments and lipids photodestruction in isolated chloroplasts. Biol. Nauki, No. 3, 8—20 (1986) [in Russian].
4. Chirkova T. V., Novitskaya L. O., Blokhina O. B. Lipid peroxidation and antioxidant systems under anoxia in plants differing in their tolerance to oxygen deficiency. Fiziologija rastenij, 45 (1), 65—73 (1998) [in Russian].
5. Asada K. The water-water cycle in chloroplasts: scavenging of active oxygen's and dissipation of excess photons. Ann. Rev. Plant Physiol. Plant Moll. Biol., 50, 601—639 (1999).
6. Blokhina O. B., Fagerstedt K. V., Chirkova T. V. Relationships between lipid peroxidation and anoxia tolerance in a range of species during post-anoxic reaeration. Physiol. Plantarum, 105 (4), 625—632 (1999).
7. Jiao S., Emmanuel H., Guikema J. A. High light stress inducing photoinhibition and protein degradation of photosystem I in Brassica rapa. Plant Sci., 167 (4), 733—741 (2004).
8. Henmi T., Miyao M., Yamamoto Y. Release and reactive-oxygen-mediated damage of the oxygen-evolving complex subunits of PSII during photoinhibition. Plant Cell Physiol., 45 (2), 243—250 (2004).
9. Kordyum E. L. Biology of plant cell in microgravity and under clinostating. Intern. Rev. Cytology, 171, 1—77 (1997).
10. Liu X., Huang B. Heat stress injury in relation to membrane lipid peroxidation in creeping bentgrass. Crop Science, 40, 503—510 (2000).
11. Navari-Izzo F., Pinzino C, Quartacci M. F., Sgherri C. L. Superoxide and hydroxyl radical generation and superoxide dismutase in PSII membrane fragments from wheat. Free Radical Res., 31, 3—9 (1999).
12. Yamamoto Y. Quality control of photosystem II. Plant and Cell Physiology, 42 (2), 121 — 128 (2001).