Hormesis response of marine and freshwater luminescent bacteria to metal exposure

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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.

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Shen, K., Shen, C., Lu, Y., Tang, X., Zhang, C., Chen, X., … Chen, Y. (2009). Hormesis response of marine and freshwater luminescent bacteria to metal exposure. Biological Research, 42(2), 183–187. https://doi.org/10.4067/S0716-97602009000200006

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