NDLI: Toxicity of Cu (II) to the green alga Chlorella vulgaris: a perspective of photosynthesis and oxidant stress.

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Toxicity of Cu (II) to the green alga Chlorella vulgaris: a perspective of photosynthesis and oxidant stress.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Song, Shufang Chen, Zunwei Liu, Huijun Wen, Yuezhong Zou, Yuqin
Description	Country affiliation: China Author Affiliation: Chen Z ( Institute of Environmental Science, Zhejiang University, Hangzhou, 310058, China.); Song S ( Institute of Environmental Science, Zhejiang University, Hangzhou, 310058, China.); Wen Y ( Institute of Environmental Science, Zhejiang University, Hangzhou, 310058, China. wenyuezhong@zju.edu.cn.); Zou Y ( Institute of Environmental Science, Zhejiang University, Hangzhou, 310058, China.); Liu H ( School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China. lhj@mail.zjgsu.edu.cn.)
Abstract	The toxic effects of Cu (II) on the freshwater green algae Chlorella vulgaris and its chloroplast were investigated by detecting the responses of photosynthesis and oxidant stress. The results showed that Cu (II) arrested the growth of C. vulgaris and presented in a concentration- and time-dependent trend and the SRichards 2 model fitted the inhibition curve best. The chlorophyll fluorescence parameters, including qP, Y (II), ETR, F v /F m , and F v /F 0, were stimulated at low concentration of Cu (II) but declined at high concentration, indicating the photosystem II (PSII) of C. vulgaris was destroyed by Cu (II). The chloroplasts were extracted, and the Hill reaction activity (HRA) of chloroplast was significantly decreased with the increasing Cu (II) concentration under both illuminating and dark condition, and faster decline speed was observed under dark condition. Activities of superoxide dismutase (SOD) and catalase (CAT) and malondialdehyde (MDA) content were also significantly decreased at high concentration Cu (II), companied with a large number of reactive oxygen species (ROS) production. All these results indicated a severe oxidative stress on algal cells occurred as well as the effect on photosynthesis, thus inhibiting the growth of algae, which providing sights to evaluate the phytotoxicity of Cu (II).
ISSN	09441344
Issue Number	18
Journal	Environmental Science and Pollution Research
Volume Number	23
e-ISSN	16147499
Language	English
Publisher	Springer
Publisher Date	2016-09-01
Publisher Place	Germany
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Environmental Science Discipline Environmental Chemistry
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Health, Toxicology and Mutagenesis Pollution Medicine

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