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题名: Effects of alkalinity variations on photosynthetic activity and exopotysaccharides of Chlorella pyrenoidosa
作者: Kang Lijuan ; Pan Xiaojie ; Chang Fengyi ; Li Dunhai ; Shen Yinwu ; Liu Yongding (liuyd@ihb.ac.cn)
通讯作者: Kang Lijuan ; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
刊名: Hupo Kexue
发表日期: 2008
卷: 20, 期:2, 页:251-256
收录类别: 其他
英文摘要: Effects of bicarbonate (HCO3-) alkalinity on the photosynthetic performance of Chlorella pyrenoidosa was investigated in present study. Photosynthetic activity, pigments, MDA and ultrastructure of Chlorella pyrenoidosa were measured for when they were cultured at two different alkalinities including 2.3mmol/L (ALK2.3) and 12.4mmol/L (ALK12.4), respectivily. At ALK2.3, photosynthetic activity was stimulated at the prophase of culture and then inhibited at the anaphase. At ALK 12.4, it represented the same phenomenon, but inhibition effects were weaker than those at ALK2.3. Ratios of Chl.b/Chl.a was increased, but Caro/TChl ratios was decreased at elevated alkalinities. The contents of MDA increased at ALK2.3 and decreased at ALK12.4. In addition, secretion of glycocalix-like layer was remarkably stimulated at elevated alkalinities. These results showed that elevated alkalinities promoted algae carbon assimilation and stimulated secretion of glycocalix-like layer. Carbohydrate could alleviate stresses at elevated alkalinities. Secretion of glycocalix-like layer could decrease the synthesis of excess products of photosynthesis and relieve feedback inhibition, which will increase the stress tolerance of C. pyenoidosa at elevated alkalinities.
ISSN号: 1003-5427
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/18809
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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Recommended Citation:
Kang Lijuan; Pan Xiaojie; Chang Fengyi; Li Dunhai; Shen Yinwu; Liu Yongding (liuyd@ihb.ac.cn).Effects of alkalinity variations on photosynthetic activity and exopotysaccharides of Chlorella pyrenoidosa,Hupo Kexue,2008,20(2):251-256
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文件名: Effects of alkalinity variations on photosynthetic activity and exopotysaccharides of Chlorella pyrenoidosa.pdf
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