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  • 标题:Transposition and expression of GEP gene in the genome of Vibrio harveyi to monitor its adherence in shrimp larvae
  • 作者:Antonius Suwanto
  • 期刊名称:BIOTROPIA
  • 印刷版ISSN:1907-770X
  • 出版年度:2006
  • 卷号:13
  • 期号:1
  • DOI:10.11598/btb.2006.13.1.74
  • 语种:English
  • 出版社:SEAMEO BIOTROP
  • 摘要:Expression of green fluorescent protein encoded by GFP gene in Vibrio harveyi was investigated to understand the ability of the gene as a molecular marker for adherence of this pathogenic Vibrio in shrimp larvae. The GFP gene was inserted into pUC18Not and pUTmini-Tn5 to generate a recombinant plasmid pWGO2 and pWGO3, respectively, which was transferred into the three isolates of V. harveyi employing diparental mating. Recombinant E. coli carrying pWGO2 and pWGO3 resulted in green-fluorescent colonies and cells due to the production of GFP. However, al1 of mini-Tn5, including mini-Tn5-gfp were not successful1y transferred to V. harveyi. Therefore, we used mini-Tn10 (pLOFKm-gfp) for inserting of gfp gene into V. harveyi genome. Although we could obtain relatively high (l0 pangkat -8) transconjugans employing Tn10, only one of Tnl0 derived isolate of V. harveyi G3 (G3-Tn1Ogfp) showed gfp expression and was further employed for adherence assay. Fluorescent 03-TnlOgfp cells could be observed inside the digestive tract of shrimp larvae and could be distinguished from vibrio that naturally exist in shrimp larvae.
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