PHYSIOLOGICAL RESPONSES OF Porphyra haitanesis TO DIFFERENT COPPER AND ZINC CONCENTRATIONS

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	PHYSIOLOGICAL RESPONSES OF Porphyra haitanesis TO DIFFERENT COPPER AND ZINC CONCENTRATIONS
	Li, Ying Xia 2; Zhou, Suo 2; Zhao, Feng Juan 3; Liu, Yan4 ; Fan, Pan Pan 2; Wang, Guang Ce 1
	2010-10-01
发表期刊	BRAZILIAN JOURNAL OF OCEANOGRAPHY
卷号	58 期号:4 页码:261-267
文章类型	Article
摘要	In the present study, several physiological responses of the red marine alga Porphyra haitanesis to elevated concentrations of copper (up to 50 mu M) and zinc (up to 100 mu M) were investigated. Our results showed that the effects of Cu2+ and Zn2+ on growth, photosynthetic pigments (chlorophylls and carotenoids), phycobiliprotein and metabolism (the fluorescence emission spectra and the activities of photosystem.) did not follow the same pattern. The relative growth rate was inhibited by different concentrations of Cu2+, and was slightly increased at lower concentrations (up to 10 mu M) and inhibited at higher Zn2+ concentrations. On the other hand, the phycoerythrin contents were slightly increased at relatively low concentrations (up to 1 mu M Cu2+ or 20 mu M Zn2+) and inhibited by high Cu2+ and Zn2+ concentrations. Moreover, photosynthesis and respiration showed an increase in the amount of oxygen exchange in response to relatively low Cu2+ (up to 1 mu M) and Zn2+ concentrations (up to 10 mu M), and a reduction to relatively high Cu2+ and Zn2+ concentrations. Oxygen evolution was more sensitive than oxygen uptake to Cu2+ and Zn2+. In addition, the photoreductive activities and fluorescence emission of photosystem II (PS II) were enhanced by lower concentrations of Cu2+ (up to 0.1 mu M) and Zn2+ (up to 10 mu M) and inhibited by higher concentrations. Furthermore, the intensity of chlorophyll a fluorescence and the active PSII reaction centers followed a similar pattern in response to elevated concentrations of Cu2+ and Zn2+. These results suggest that lower concentrations of Cu2+ and Zn2+ affected the metabolism of P. haitanesis, which was inhibited by higher concentrations of these metals.
关键词	Porphyra Haitanesis Copper Zinc Photosystem Ii
收录类别	SCI
语种	英语
WOS记录号	WOS:000287141100001
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/32816
专题	实验海洋生物学重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China 2.Nanyang Normal Univ, Sch Life Sci & Technol, Nanyang 473061, Peoples R China 3.BingZhou Univ, Dept Biol Sci, Bingzhou 256600, Peoples R China 4.Wuhan Univ Sci & Technol, Sch Life Sci, Zhongnan Brach, Wuhan 430223, Peoples R China
推荐引用方式 GB/T 7714	Li, Ying Xia,Zhou, Suo,Zhao, Feng Juan,et al. PHYSIOLOGICAL RESPONSES OF Porphyra haitanesis TO DIFFERENT COPPER AND ZINC CONCENTRATIONS[J]. BRAZILIAN JOURNAL OF OCEANOGRAPHY,2010,58(4):261-267.
APA	Li, Ying Xia,Zhou, Suo,Zhao, Feng Juan,Liu, Yan,Fan, Pan Pan,&Wang, Guang Ce.(2010).PHYSIOLOGICAL RESPONSES OF Porphyra haitanesis TO DIFFERENT COPPER AND ZINC CONCENTRATIONS.BRAZILIAN JOURNAL OF OCEANOGRAPHY,58(4),261-267.
MLA	Li, Ying Xia,et al."PHYSIOLOGICAL RESPONSES OF Porphyra haitanesis TO DIFFERENT COPPER AND ZINC CONCENTRATIONS".BRAZILIAN JOURNAL OF OCEANOGRAPHY 58.4(2010):261-267.

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