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PHYSIOLOGICAL RESPONSES OF Porphyra haitanesis TO DIFFERENT COPPER AND ZINC CONCENTRATIONS
Li, Ying Xia2; Zhou, Suo2; Zhao, Feng Juan3; Liu, Yan4; Fan, Pan Pan2; Wang, Guang Ce1
2010-10-01
Source PublicationBRAZILIAN JOURNAL OF OCEANOGRAPHY
Volume58Issue:4Pages:261-267
SubtypeArticle
AbstractIn 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.
KeywordPorphyra Haitanesis Copper Zinc Photosystem Ii
Indexed BySCI
Language英语
WOS IDWOS:000287141100001
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/32816
Collection实验海洋生物学重点实验室
Affiliation1.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
Recommended Citation
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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