Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2013.969.975E. coli in Response to the Exposure of Sound Field]]>GuShao-Bin YangBin WuYing LiShi-Chang LiuWen DuanXiao-Fei LiMeng-Wei 1220131618It is undeniable that environmental sonic vibration can affect
our emotions and mood, but so far the study of physical stimuli provoked by
audible wave on single cells has been rarely concerned. To investigate the response
of E. coli to audible wave exposure, the growth status and alterations
in antioxidant enzyme activity were studied in liquid culture. The data showed
that the growth of E. coli was promoted in the treatments of different
frequencies sound wave. The most significant effect on growth promotion appeared
when sound wave was maintained at 100 dB and 5000 Hz. Simultaneously, sonic
vibration evoked significantly increases the level of total protein content
contents. And the changes of activities of Super Oxide Dismutase (SOD) and catalase
(CAT) were observed obviously. The results suggested that the growth promotion
effect of audible sound may be non-linear and shows obvious frequency and intensity
peculiarities. Moreover, the increase in activity of antioxidant enzymes implied
that a number of active oxygen species generated in bacterial cell under the
exposure of audible sound. We speculate that the audible sound may cause a secondary
oxidative stress. Further studies are needed to elucidate the mechanisms of
active oxygen species generation induced by audible sound.]]>Aggio, R., V. Obolonkin and S.G. Villas-Boas,20118670678Altman, G., R. Horan, I. Martin, J. Farhadi, P. Stark and V. Volloch et al.,200216270272Marklund, S. and G. Marklund,197447469474Bailly, C., A. Benamar, F. Corbineau and D. Come,199697104110Bradford, M.M.,197672248254Danet, A.F.,20052005Davies, A.,20092009Gu, S.B., Y. Wu, K.W. Li, S.C. Li, S.Y. Ma, Q.N. Wang and R. Wang,2010Escherichia coli.]]>78367371Hou, T.Z. and R.E. Mooneyham,199927110Hou, T.Z. and R.E. Mooneyham,199927131141Ying, J.C.L., J. Dayou and C.K. Phin,2009Escherichia coli.]]>3124127Leighton, T.G.,200793383Leventhall, G.,200793130137Li, B., J. Wei, X. Wei, K. Tang, Y. Liang, K. Shu and B. Wang,2008Dendrobium candidum.]]>63269275Matsuhashi, M., A.N. Pankrushina, K. Endoh, H. Watanabe and H. Ohshima et al.,1996Bacillus carboniphilus cells respond to growth-promoting physical signals from cells of homologous and heterologous bacteria.]]>42315323Mitchell, C.A. and P.N. Myers,199517142Shao, H.B., B. Li, B.C. Wang, K. Tang and Y.L.Liang et al.,2008Chrysanthemum plants under sound stress.]]>331329333Wang, B.C., L.Q. Zhu, B. Li and W. Gong,2010Dendrobium Candidium.]]>2010pp: 17891791Wang, X.J., B.C. Wang, Y. Jia, D.Q. Huo and C.R. Duan,2003chrysanthemum (Gerbera jamesonii).]]>29103107Wei, JM., B. Li, B.C. Wang, K. Tang, Y.L. Liang and K.X. Shu,2008Dendrobium candidum.]]>27462468