title: Hormesis response of marine and freshwater luminescent bacteria to metal exposure.
abstract: The stimulatory effect of low concentrations of toxic chemicals on organismal metabolism, referred to as hormesis, has been found to be common in the widely used luminescence bioassay. This paper aims to study the hormesis phenomenon in both marine and freshwater luminescent bacteria, named Photobacterium phosphorem and Vibrio qinghaiensis. The effects of Cu (II), Zn (II), Cd (II) and Cr (VI) on luminescence of these two bacteria were studied for 0 to 75 minutes exposure by establishing dose- and time-response curves. A clear hormesis phenomenon was observed in all four testing metals at low concentrations under the condition of luminescence assays.
authors.affiliation: Department of Environmental Engineering, Zhejiang University, Huajiachi Campus, 268 Kaixuan Road, Hangzhou, Zhejiang 310029, China.
authors.forename: Kaili
authors.initials: K
authors.lastname: Shen
authors.forename: Chaofeng
authors.initials: C
authors.lastname: Shen
authors.forename: Yuan
authors.initials: Y
authors.lastname: Lu
authors.forename: Xianjin
authors.initials: X
authors.lastname: Tang
authors.forename: Congkai
authors.initials: C
authors.lastname: Zhang
authors.forename: Xincai
authors.initials: X
authors.lastname: Chen
authors.forename: Jiyan
authors.initials: J
authors.lastname: Shi
authors.forename: Qi
authors.initials: Q
authors.lastname: Lin
authors.forename: Yingxu
authors.initials: Y
authors.lastname: Chen
mesh_terms: D002104:Cadmium / Q000494:pharmacology; D002857:Chromium / Q000494:pharmacology; D003300:Copper / Q000494:pharmacology; D005618:Fresh Water; D049449:Luminescence; D019216:Metals, Heavy / Q000494:pharmacology*; D010776:Photobacterium / Q000187:drug effects*; D012623:Seawater; D013997:Time Factors; D014733:Vibrio / Q000187:drug effects*; D015032:Zinc / Q000494:pharmacology
chemical_list: D019216:Metals, Heavy; D002104:Cadmium; D002857:Chromium; D003300:Copper; D015032:Zinc