Journal of East China Normal University(Natural Sc ›› 2007, Vol. 2007 ›› Issue (2): 98-103.

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Luminescent Inhibition of Luminescent Bacteria by Ultra-Violets of Three Different Wave Lengths(Chinese)

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  1. School of Life Science, East China Normal University, Shanghai 200062, China
  • Received:2005-10-21 Revised:2006-03-10 Online:2007-03-25 Published:2007-03-25
  • Contact: HAO Wei

Abstract: The influence of three kinds of Ultra-Violets (UVA, UVB and UVC) on two species of luminescent bacteria (V.qinghaiensis andV.fischeri) was studied. The results indicated that all three kinds of Ultra-Violets could inhibit the luminescence of the two species of luminescent bacteria. And with the increase of irradiation time, the inhibiting effects were enhanced without the changing of luminescent spectrum. UVC had the best inhibitory effect, UVB and UVA were in the next place. The experiments showed that even little irradiation(22 μW/cm2)would cause inhibition of luminescence in a few minutes. Furthermore, the MDA content produced by UV irradiation increased evidently. This phenomenon indicated that UV caused cellular membranes′ LPO which damaged the cellular membranes and inhibited the luminescence.

Key words: UV damage, luminescent bacteria, irradiation, bioluminescence, Ultra-Violet, UV damage, luminescent bacteria, irradiation, bioluminescence

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