title: Effects of Cu(2+) and Zn(2+) on growth and physiological characteristics of green algae, Cladophora.
abstract: Effects of various concentrations of Cu(2+) and Zn(2+) (0.0, 0.1, 0.25, 0.5, or 1.0 mg/L) on the growth, malondialdehyde (MDA), the intracellular calcium, and physiological characteristics of green algae, Cladophora, were investigated. Low Zn(2+) concentrations accelerated the growth of Cladophora, whereas Zn(2+) concentration increases to 0.25 mg/L inhibited its growth. Cu(2+) greatly influences Cladophora growth. The photosynthesis of Cladophora decreased under Zn(2+) and Cu(2+) stress. Cu(2+) and Zn(2+) treatment affected the content of total soluble sugar in Cladophora and has small increases in its protein content. Zn(2+) induced the intracellular calcium release, and copper induced the intracellular calcium increases in Cladophora. Exposure to Cu(2+) and Zn(2+) induces MDA in Cladophora. The stress concent of Cu(2+) was strictly correlated with the total soluble sugar content, Chla+Chlb, and MDA in Cladophora, and the stress concent of Zn(2+) was strictly correlated with the relative growth rate (RGR) and MDA of Cladophora.
authors.affiliation: School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China. cdj@ahau.edu.cn.
authors.forename: De-ju
authors.initials: DJ
authors.lastname: Cao
authors.affiliation: School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China.
authors.forename: Pan-pan
authors.initials: PP
authors.lastname: Xie
authors.affiliation: School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China.
authors.forename: Juan-wei
authors.initials: JW
authors.lastname: Deng
authors.affiliation: School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China.
authors.forename: Hui-min
authors.initials: HM
authors.lastname: Zhang
authors.affiliation: School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China.
authors.forename: Ru-xiao
authors.initials: RX
authors.lastname: Ma
authors.affiliation: School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Liu
authors.affiliation: School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China.
authors.forename: Ren-jing
authors.initials: RJ
authors.lastname: Liu
authors.affiliation: School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China.
authors.forename: Yue-gan
authors.initials: YG
authors.lastname: Liang
authors.affiliation: School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China.
authors.forename: Hao
authors.initials: H
authors.lastname: Li
authors.affiliation: School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China.
authors.forename: Xiao-dong
authors.initials: XD
authors.lastname: Shi
mesh_terms: D020013:Calcium Signaling / Q000187:drug effects; D000460:Chlorophyta / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism; D003300:Copper / Q000633:toxicity*; D004305:Dose-Response Relationship, Drug; D008315:Malondialdehyde / Q000378:metabolism; D010788:Photosynthesis / Q000187:drug effects*; D014874:Water Pollutants, Chemical / Q000633:toxicity*; D015032:Zinc / Q000633:toxicity*
chemical_list: D014874:Water Pollutants, Chemical; D008315:Malondialdehyde; D003300:Copper; D015032:Zinc
keywords: Ca2+; Cladophora; Correlation; Cu2+ and Zn2+; Physiological properties