LI Gen-Bao, WANG Gao-Hong, LI Dun-Hai, SONG Li-Rong, LIU Yong-Ding. EFFECTS OF EXOGENOUS Ca2+ON THE MEMBRANE PERMEABILITY AND PHOTOSYNTHETIC CHARACTERISTICS OF ANABAENA sp.PCC7120 CELLS UNDER SIMULATED MICROGRAVITY[J]. ACTA HYDROBIOLOGICA SINICA, 2003, 27(2): 136-139.
Citation: LI Gen-Bao, WANG Gao-Hong, LI Dun-Hai, SONG Li-Rong, LIU Yong-Ding. EFFECTS OF EXOGENOUS Ca2+ON THE MEMBRANE PERMEABILITY AND PHOTOSYNTHETIC CHARACTERISTICS OF ANABAENA sp.PCC7120 CELLS UNDER SIMULATED MICROGRAVITY[J]. ACTA HYDROBIOLOGICA SINICA, 2003, 27(2): 136-139.

EFFECTS OF EXOGENOUS Ca2+ON THE MEMBRANE PERMEABILITY AND PHOTOSYNTHETIC CHARACTERISTICS OF ANABAENA sp.PCC7120 CELLS UNDER SIMULATED MICROGRAVITY

  • Received Date: June 05, 2002
  • Rev Recd Date: November 14, 2002
  • Published Date: March 24, 2003
  • In this study, the effects of exogenous Ca2+ on the membrane permeability and photosynthetic characteristics of Anabaena sp.PCC7120 cells under simulated microgravity were studied. Simulated microgravity was provided by a slowly horizontal rotating clinostat. Physiological characteristics of Anabaena sp.PCC7120 cells in three different content of Ca2+ were measured. During 72h of treatment, the membrane permeability of Anabaena sp.PCC7120 cells was higher 16% in Ca2+-free medium than that in the control (0.245mmol/L), and higher 45% than that in medium of high concentration of Ca2+ (0.490mmol/L). The photochemistry efficiency (expressed as Fv/Fm) of Anabaena sp.PCC7120 cells decreased under simulated microgravity, but the range of decreasing was different in three different treatments. In Ca2+-free medium, the value of Fv/Fm quickly decreased at the first day, and the decreasing range reached 35% at the third day. However, in the Ca2+-complete medium, the value of Fv/Fm decreased slowly. With increasing concentration of Ca2+ in medium, the decreasing range was only 26% in medium of high concentration of Ca2+(0.490mmol/L) at the end of experiments. The treatment with Ca2+ channel inhibitor showed that the second messenger was involved in the protective process. Experimental results showed that increased Ca2+ in medium could alleviate membrane permeability induced by simulated microgravity, and lessened the decreasing range of photochemistry efficiency in Anabaena sp.PCC7120 cells. Exogenous Ca2+ might enhance stabilization of plasma membrane. Moreover, exogenous Ca2+ might alleviate the microgravity-induced damage of photosynthesis of Anabaena sp.PCC7120 cells.
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    Hu Zhangli. Biological responses of microalgae to space flight and the related molecular mechanism [D]. Ph. D. thesis of the Chinese academy of sciences,1997.[胡章立. 几种微藻的空间生物学效应及其分子机制. 中国科学院理学博士学位论文,1997][2] Palladina T O, Kordyum E L, Bilyavs' Ka NO. Activity and localization of transport ATPase in cells of pea seeding roots during hypogravitation [J]. Ukr. Bot. Zh.,1984,41:54-57[3] Li G B, Wang G H, Song L R, et al. Lipid peroxidation in microalgae cells under simulated microgravity [J]. Space medicine medicine engineering,2002,15(4):270-272.[李根保,王高鸿,宋立荣,等. 模拟微重力下微藻细胞的脂质过氧化[J]. 航天医学与医学工程,2002,15(4):270-272][4] Takagi S, Yamamoto K T, Furuya M, et al. Cooperative regulation of cytoplasmic streaming and Ca2+ fluxes by Pfr and photosynthesis in Vallisneria mesophyll cells [J]. Plant physiol., 1990,94:1702-1708[5] Kreimer G, Witman G B. Novel touch-induced Ca-dependent phobic response in a flagellate green alga [J]. Cell Motil. Cytoskel.,1994,29:97-109[6] Du Pont F M. Effect of temperature on the plasma membrane and tonoplast ATPase of barleyroots [J]. Plant Physiol. 1989,89:1401-1402[7] Monroy A F, Sarhan F, Shindsa R S. Cold-induced changes in freezing tolerance, protein phosphorylation and gene expression evidence for a role of calcium [J]. Plant physiol,.1993,102:1227-1234[8] Li M R, Liu H X, Wang Y R, et al. Effects of calcium on the cold-resistance of rice seedings [J]. Acta Phytophysiologica Sinica, 1996,22(4):379-384.[李美如,刘鸿先,王以柔,等. 钙对水稻幼苗抗冷性的影响[J]. 植物生理学报,1996,22(4):379-384][9] Zhao K F, Lu Y F, Zhang B Z, et al. Influence of calcium on alleviating Nacl-induced injury effects in wheat seeding [J]. Acta Botanica Sinica,1993,35(1):51-56.[赵可夫,刘元芳,张宝泽,等. Ca对小麦幼苗低盐害效应的研究[J]. 植物学报,1993,35(1):51-56][10] Lu S Y, Li Y C, Guo Z F, et al. Enhancement of drought resistance of rice seeding by calcium [J]. Chinese Journal of Rice Science, 1993,13(3):161-164.[卢少云,黎用朝,郭振飞,等. 钙提高水稻幼苗抗旱性的研究. 中国水稻科学,1999,13(3):161-164][11] Zou Q, Huang X H, Wang D Y, et al. Effect of calcium on muskmelon seeding harmed by acid rain [J]. Acta Phytoecologica Sinica, 1999,23(2):186-191. [周青,黄晓华,王东燕,等. 钙对酸雨伤害甜瓜幼苗的影响. 植物生态学报,1999,23(2):186-191][12]Zhang Z S, Li R Q, Wang J B. Effect of Ca2+ pretreatment on plasma permeability, GSH and AsA contents, and calcium distribution in pepper mesophyll cells under heat stress [J]. Acta Phytoecologica Sinica,2001,25(2):230-234. [张宗申,利容千,王建波. 外源Ca2+处理对高温胁迫下辣椒叶片细胞膜透性和GSH、AsA含量及Ca2+分布的影响. 植物生态学报,2002,25(2):230-234][13] Gong M, Li Y J, Dai X, et al. Involvement of calcium and calmodulin in the acquisition of heat-shock induced thermotolerance in maize seedings [J]. Journal of Plant Physiology,1997,150:615-621[14] Tang Z C. Experimental Handbook of Modern Plant Physiology [M]. Beijing:Science press, 1999.[汤章城,现代植物生理学实验指南. 北京:科学出版社,1999][15] Kordyum E L, Belyavaskaya N A, Palladina T A and Tarasenko V A. The role of calcium ions in cytological effects of hypogravity [J]. Adv. space Res.,1984,4(12):23-26[16] Belyavaskaya N A. Free and membrane-bound calcium in microgravity and microgravity effects at the membrane level [J]. Adv. Space Res.,1996,17:169-177[17] Zhang Z S, Li R Q, Wang J B. Effect of Ca2+pretreatment on the Ca2+-ATPase activity in the mesophyll cells of Pepper seeding under heat stress [J]. Acta Phytophysiologica Sinica,2001,27(6):451-454.[张宗申,利容千,王建波. Ca2+预处理对热胁迫下辣椒叶肉细胞中Ca2+-ATP酶活性的影响. 植物生理学报,2001,27(6):451-454][18] Li D H, Song L R, Liu Y D. Response of photosynthetic activies of Nostoc spheroids Kütz. (Cyanobacterium) to the salt stress [J]. Acta Hydrobilogica Sinica, 1999,23(5):420-424.[李敦海,宋立荣,刘永定. 葛仙米光合活性对盐胁迫的反应. 水生生物学报,1999,23(5):420-424][19] Yuan S, Li G F. Study on the binding state of calcium in photosystem Ⅱ(PSⅡ) oxygen-evolution compex [J]. Acta Botanica Sinica,1991,33(11):881-886. [袁生,李功藩. PSⅡ放氧复合物中Ca2+结合状态的研究. 植物学报,1991,33(11):881-886]

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