葛仙米光合活性对盐胁迫的反应

被引：3

作者：

李敦海

宋立荣

刘永定

机构：

[1] 中国科学院水生生物研究所!武汉

来源：

水生生物学报 | 1999年 / S1期

关键词：

葛仙米; 盐胁迫; 光系统I与光系统II活性; 光合作用; 叶绿素a荧光;

D O I：

暂无

中图分类号：

Q945 [植物生理学];

学科分类号：

0903 ;

摘要：

收集人工条件下培养的葛仙米球形群体，以不同浓度的NaCl溶液处理，当浓度超过0．2mol／L后，叶绿素a荧光的可变部分（Fv）与最大荧光（Fm）之比值（Fv／Fm）与NaCl浓度呈负相关，光合放氧速率也随着NaCl浓度升高而降低．这两者随氯化钠浓度升高而降低的趋势均呈现出两个阶段性：低NaCl浓度时的缓慢降低阶段和高NaCl浓度时的快速降低阶段．Fv／Fm比值的转折点在0．2mol／L，而光合放氧速率的在0．4mol／L，后者与海水的浓度接近．呼吸作用几乎不受NaCl的影响．光系统I（PSI）和光系统II（PSII）活性随着NaCl浓度的提高均有降低．

引用

页码：420 / 424

页数：5

共 8 条

[1]

Rewetting of drought-resistant blue-green algae: Time course of water uptake and reappearance of respiration, photosynthesis, and nitrogen fixation[J] . Siegfried Scherer,Anneliese Ernst,Ting-Wei Chen,Peter B?ger. &nbspOecologia . 1984 (3)

[2] SENSITIVITY OF NOSTOC-COMMUNE UTEX-584 (CYANOBACTERIA) TO WATER-STRESS [J].

POTTS, M ;

BOWMAN, MA .

ARCHIVES OF MICROBIOLOGY, 1985, 141 (01) :51-56

[3] RECOVERY OF ADENINE-NUCLEOTIDE POOLS IN TERRESTRIAL BLUE-GREEN-ALGAE AFTER PROLONGED DROUGHT PERIODS [J].

SCHERER, S ;

CHEN, TW ;

BOGER, P .

OECOLOGIA, 1986, 68 (04) :585-588

[4] USE OF CHLOROPHYLL FLUORESCENCE TO ESTIMATE THE EFFECT OF PHOTOINHIBITION IN OUTDOOR CULTURES OF SPIRULINA-PLATENSIS [J].

VONSHAK, A ;

TORZILLO, G ;

TOMASELI, L .

JOURNAL OF APPLIED PHYCOLOGY, 1994, 6 (01) :31-34

[5] TEMPERATURE-INDUCED ALTERATIONS OF INVIVO CHLOROPHYLL A FLUORESCENCE INDUCTION IN CUCUMBER AS AFFECTED BY DCMU [J].

JANSSEN, LHJ ;

VANHASSELT, PR .

PHOTOSYNTHESIS RESEARCH, 1988, 15 (02) :153-162

[6]

The ecology of Nostoc. Dedds W K,Gudder D A,Mollenhauer D. Journal of Phycology . 1995

[7]

Generic assignments, strain histories and properties of pure cultures ofcyanobacteria. Rippka R,Deruelles J,Waterbury J B,et al. Journal of General Microbiology . 1979

[8]

Cytochrome f lors in astaxanthin-accumulating red cells of Haematococcus pluvialis (Chlorophyceace): Comparison of photosrnthetic activity, photosynthetic enzymes, and thylakoidmembrane polypeptides in red and green cells. Tan S,Cunningham F X,Youmans M Jr,et al. Journal of Phycology . 1995

← 1 →