{"refrec":{"BRefID":117072,"RR":"<b>Tinh, N.T.N.; Asanka Gunasekara, R.A.Y.S.; Boon, N.; Dierckens, K.; Sorgeloos, P.; Bossier, P.</b> (2007). N-acyl homoserine lactone-degrading microbial enrichment cultures isolated from <i>Penaeus vannamei</i> shrimp gut and their probiotic properties in <i>Brachionus plicatilis</i> cultures. <i>FEMS Microbiol. Ecol. 62(1)</i>: 45-53. <a href=\"http://dx.doi.org/10.1111/j.1574-6941.2007.00378.x\" target=\"_blank\">http://dx.doi.org/10.1111/j.1574-6941.2007.00378.x</a>","BEntID":111384,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>FEMS Microbiol. Ecol. 62(1)</i>: 45-53. <a href=\"https://dx.doi.org/10.1111/j.1574-6941.2007.00378.x\" target=\"_blank\">https://dx.doi.org/10.1111/j.1574-6941.2007.00378.x</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Tinh, N.T.N.; Asanka Gunasekara, R.A.Y.S.; Boon, N.; Dierckens, K.; Sorgeloos, P.; Bossier, P.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Tinh, N.T.N. <i>et al.</i>","Englishabstract":"Three bacterial enrichment cultures (ECs) were isolated from the digestive tract of Pacific white shrimp <i>Penaeus vannamei</i>, by growing the shrimp microbial communities in a mixture of N-acyl homoserine lactone (AHL) molecules. The ECs, characterized by denaturing gradient gel electrophoresis analysis and subsequent rRNA sequencing, degraded AHL molecules in the degradation assays. Apparently, the resting cells of the ECs also degraded one of the three types of quorum-sensing signal molecules produced by <i>Vibrio harveyi</i> in vitro [i.e. harveyi autoinducer 1 (HAI-1)]. The most efficient AHL-degrading ECs, EC5, was tested in <i>Brachionus</i> experiments. EC5 degraded the <i>V. harveyi</i> HAI-1 autoinducer in vivo, neutralizing the negative effect of <i>V. harveyi</i> autoinducer 2 (AI-2) mutant, in which only the HAI-1- and CAI-1-mediated components of the quorum-sensing system are functional on the growth of <i>Brachionus</i>. This suggests that EC5 interferes with HAI-1-regulated metabolism in <i>V. harveyi</i>. These AHL-degrading ECs need to be tested in other aquatic systems for their probiotic properties, preferably in combination with specific AI-2-degrading bacteria. 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