Department of Environmental Engineering, Zhejiang University, Huajiachi Campus, 268 Kaixuan Road, Hangzhou, Zhejiang 310029, China.
Biol Res. 2009;42(2):183-7. Epub 2009 Aug 20.
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.
低浓度有毒化学物质对生物体代谢的刺激作用，称为毒物兴奋效应，在广泛使用的发光生物测定中很常见。本文旨在研究海洋和淡水发光细菌——发光杆菌和青海弧菌中的毒物兴奋效应现象。通过建立剂量-时间反应曲线，研究了 Cu（II）、Zn（II）、Cd（II）和 Cr（VI）对这两种细菌发光的影响，暴露时间为 0 至 75 分钟。在发光测定条件下，所有四种测试金属在低浓度下均表现出明显的毒物兴奋效应。
