Hormesis response of marine and freshwater luminescent bacteria to metal exposure.
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.
Shen
Kaili
K
Department of Environmental Engineering, Zhejiang University, Huajiachi Campus, 268 Kaixuan Road, Hangzhou, Zhejiang 310029, China.
Shen
Chaofeng
C
Lu
Yuan
Y
Tang
Xianjin
X
Zhang
Congkai
C
Chen
Xincai
X
Shi
Jiyan
J
Lin
Qi
Q
Chen
Yingxu
Y
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
D019216:Metals, Heavy; D002104:Cadmium; D002857:Chromium; D003300:Copper; D015032:Zinc