Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, 403004, Goa, India.
Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, 403004, Goa, India.
Mar Pollut Bull. 2020 Jan;150:110773. doi: 10.1016/j.marpolbul.2019.110773. Epub 2019 Nov 30.
Tarballs are semi-solid remnants of crude oil and they are formed in marine environment after oil-spill incidents. They are composed of diverse hydrocarbons; some of which are recalcitrant in nature. Recent studies based on amplicon sequencing of 16S rRNA gene suggested that tarballs support hundreds of bacterial genera and provided insights into their role as hydrocarbon degraders and potential human pathogens. In this study, bacterial composition of tarball-contaminated seawater from Vagator beach, Goa, India was characterized by amplicon sequencing of V-V regions of 16S rRNA gene. The DNA data revealed an unusual surge of Vibrio in sea-water contaminated with tarballs in May 2018 (16.16% OTUs), compared to tarball-free seawater samples collected in March 2018 (no detectable OTUs) and September 2018 (0.17% OTUs). Further studies are required to investigate if Vibrio species form biofilms on tarballs which may act as good reservoirs for their survival and transmission success.
油球是原油的半固态残余物，它们在溢油事件后在海洋环境中形成。它们由多种碳氢化合物组成；其中一些在性质上是顽固的。最近基于 16S rRNA 基因扩增子测序的研究表明，油球支持数百种细菌属，并深入了解了它们作为碳氢化合物降解物和潜在人类病原体的作用。在这项研究中，通过扩增子测序 V-V 区 16S rRNA 基因，对来自印度果阿州瓦加托海滩受油球污染的海水的细菌组成进行了表征。与 2018 年 3 月采集的无油球海水样本（未检测到 OTUs）和 2018 年 9 月采集的无油球海水样本相比，2018 年 5 月受油球污染的海水中的弧菌（16.16%OTUs）数量异常增加。需要进一步研究以调查弧菌属是否在油球上形成生物膜，这可能是它们生存和传播成功的良好储层。
