Abstract:
:A marine isolate, Nesiotobacter exalbescens COD22, isolated from deep sea sediment (2100 m depth) was capable of degrading aromatic hydrocarbons. The Nesiotobacter sp. grew well in the presence of toluene at 0.1 MPa and 10 MPa at a rate of 0.24 h-1 and 0.12 h-1, respectively, in custom designed high pressure reactors. Percentage of hydrocarbon degradation was found to be 87.5% at ambient pressure and it reached 92% under high pressure condition within a short retention period of 72 h. The biodegradation of hydrocarbon was confirmed by the accumulation of dicarboxylic acid, benzoic acid, benzyl alcohol and benzaldehyde which are key intermediates in toluene catabolism. The complete genome sequence consists of 4,285,402 bp with 53% GC content and contained 3969 total coding genes. The complete genome analysis revealed unique adaptation and degradation capabilities for complex aromatic compounds, biosurfactant synthesis to facilitate hydrocarbon emulsification, advanced mechanisms for chemotaxis and presence of well developed flagellar assembly. The genomic data corroborated with the results of hydrocarbon biodegradation at high pressure growth conditions and confirmed the biotechnological potential of Nesiotobacter sp. towards bioremediation of hydrocarbon polluted deep sea environments.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Ganesh Kumar A,Mathew NC,Sujitha K,Kirubagaran R,Dharani Gdoi
10.1038/s41598-019-55115-9subject
Has Abstractpub_date
2019-12-10 00:00:00pages
18724issue
1issn
2045-2322pii
10.1038/s41598-019-55115-9journal_volume
9pub_type
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