Dataset Information

Complete Genome Sequence of Pseudomonas sp. Strain phDV1, an Isolate Capable of Efficient Degradation of Aromatic Hydrocarbons.

ABSTRACT: Pseudomonas sp. strain phDV1 is a Gram-negative bacterium capable of degrading aromatic hydrocarbons. Here, we present the complete genome sequence of this strain, which consists of 4,727,682?bp, with a 62.3% G+C content and 4,574 genes. Multiple genes responsible for the degradation of aromatics are present in this strain.

SUBMITTER: Xie H

PROVIDER: S-EPMC6328649 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature

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Complete Genome Sequence of <i>Pseudomonas</i> sp. Strain phDV1, an Isolate Capable of Efficient Degradation of Aromatic Hydrocarbons.

Xie Hao H Valsamidis Giannis G Mathioudaki Eirini E Tsiotis Georgios G

Microbiology resource announcements 20190110 2

Pseudomonas sp. strain phDV1 is a Gram-negative bacterium capable of degrading aromatic hydrocarbons. Here, we present the complete genome sequence of this strain, which consists of 4,727,682 bp, with a 62.3% G+C content and 4,574 genes. Multiple genes responsible for the degradation of aromatics are present in this strain. ...[more]

PMID: 30643876

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Project description:Rhodococcus sp. strain DK17 was isolated from soil and analyzed for the ability to grow on o-xylene as the sole carbon and energy source. Although DK17 cannot grow on m- and p-xylene, it is capable of growth on benzene, phenol, toluene, ethylbenzene, isopropylbenzene, and other alkylbenzene isomers. One UV-generated mutant strain, DK176, simultaneously lost the ability to grow on o-xylene, ethylbenzene, isopropylbenzene, toluene, and benzene, although it could still grow on phenol. The mutant strain was also unable to oxidize indole to indigo following growth in the presence of o-xylene. This observation suggests the loss of an oxygenase that is involved in the initial oxidation of the (alkyl)benzenes tested. Another mutant strain, DK180, isolated for the inability to grow on o-xylene, retained the ability to grow on benzene but was unable to grow on alkylbenzenes due to loss of a meta-cleavage dioxygenase needed for metabolism of methyl-substituted catechols. Further experiments showed that DK180 as well as the wild-type strain DK17 have an ortho-cleavage pathway which is specifically induced by benzene but not by o-xylene. These results indicate that DK17 possesses two different ring-cleavage pathways for the degradation of aromatic compounds, although the initial oxidation reactions may be catalyzed by a common oxygenase. Gas chromatography-mass spectrometry and 300-MHz proton nuclear magnetic resonance spectrometry clearly show that DK180 accumulates 3,4-dimethylcatechol from o-xylene and both 3- and 4-methylcatechol from toluene. This means that there are two initial routes of oxidation of toluene by the strain. Pulsed-field gel electrophoresis analysis demonstrated the presence of two large megaplasmids in the wild-type strain DK17, one of which (pDK2) was lost in the mutant strain DK176. Since several other independently derived mutant strains unable to grow on alkylbenzenes are also missing pDK2, the genes encoding the initial steps in alkylbenzene metabolism (but not phenol metabolism) appear to be present on this approximately 330-kb plasmid.

Dataset Information

Complete Genome Sequence of Pseudomonas sp. Strain phDV1, an Isolate Capable of Efficient Degradation of Aromatic Hydrocarbons.

Publications

Complete Genome Sequence of <i>Pseudomonas</i> sp. Strain phDV1, an Isolate Capable of Efficient Degradation of Aromatic Hydrocarbons.

Similar Datasets

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