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Responses of Synechocystis sp. PCC 6803 (cyanobacterium) photosystem Ⅱ to pyrene stress
Shao Jihai1; Yu Gongliang1; Wu Zhongxing1; Peng Xin1; Li Renhui1
2010
Source Publication环境科学学报:英文版
ISSN1001-0742
Volume000Issue:007Pages:1091
AbstractIn order to explore the mechanism of acute toxicity for pyrene to cyanobacterial organisms, the responses of Synechocystis sp. PCC 6803 photosystem Ⅱ (PS Ⅱ) under pyrene stress were studied. The results showed there was no significant difference about the oxygen evolution under 0.125 mg/L pyrene stress when compared with control, but it was significantly lower than control at 0.625 mg/L pyrene. Polyphasic chlorophyll-a fluorescence transients in cells of Synechocystis sp. PCC 6803 exhibited a typical increase including O, J, I, and P phases. Fluorescence yield at phases J, I and P declined slightly at 0.125 and 0.625 mg/L pyrene, and significantly lower than control at 3.125 mg/L. According to the parameters deviated from JIP-test, no modification was induced by pyrene both at the donor side and at the acceptor side of PS Ⅱ, and the reaction centre of PS Ⅱ is the primary damaging target. Based on the expressing of four key genes (psbA, psbB, psbC and psbO) of PS Ⅱ, only psbA showed significant difference at 3.125 mg/L pyrene when compared with control.
Keyword蓝藻 胁迫 反应中心 psbA 对照组 毒性机制 叶绿素a
Language英语
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/37298
Collection藻类生物学及应用研究中心_期刊论文
Affiliation1.Institute of Hydrobiology, Chinese Academy of Sciences
2.Institute of Hydrobiology, Chinese Academy of Sciences
3.Institute of Hydrobiology, Chinese Academy of Sciences
4.Institute of Hydrobiology, Chinese Academy of Sciences
5.Institute of Hydrobiology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Shao Jihai,Yu Gongliang,Wu Zhongxing,等. Responses of Synechocystis sp. PCC 6803 (cyanobacterium) photosystem Ⅱ to pyrene stress[J]. 环境科学学报:英文版,2010,000(007):1091.
APA Shao Jihai,Yu Gongliang,Wu Zhongxing,Peng Xin,&Li Renhui.(2010).Responses of Synechocystis sp. PCC 6803 (cyanobacterium) photosystem Ⅱ to pyrene stress.环境科学学报:英文版,000(007),1091.
MLA Shao Jihai,et al."Responses of Synechocystis sp. PCC 6803 (cyanobacterium) photosystem Ⅱ to pyrene stress".环境科学学报:英文版 000.007(2010):1091.
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