Dataset Information

Draft Whole-Genome Sequence of Psychrotrophic Arthrobacter sp. Strain 7749, Isolated from Antarctic Marine Sediments with Applications in Enantioselective Alcohol Oxidation.

ABSTRACT: Here, we report the 4.12-Mb draft genome sequence of Arthrobacter sp. strain 7749, isolated from marine sediment samples of the Antarctic Peninsula, using enriched medium with (RS)-1-(4-phenyl)-ethanol as a carbon source. This genome sequence will provide relevant information for applications in enantioselective alcohol oxidation to improve industrial catalytic processes.

SUBMITTER: Sastre DE

PROVIDER: S-EPMC5658506 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature

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Draft Whole-Genome Sequence of Psychrotrophic Arthrobacter sp. Strain 7749, Isolated from Antarctic Marine Sediments with Applications in Enantioselective Alcohol Oxidation.

Sastre Diego E DE Santos Leidaiany P LP Kagohara Edna E Andrade Leandro H LH

Genome announcements 20171026 43

Here, we report the 4.12-Mb draft genome sequence of Arthrobacter sp. strain 7749, isolated from marine sediment samples of the Antarctic Peninsula, using enriched medium with (RS)-1-(4-phenyl)-ethanol as a carbon source. This genome sequence will provide relevant information for applications in enantioselective alcohol oxidation to improve industrial catalytic processes. ...[more]

PMID: 29074668

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Project description:BackgroundDispersal ability, population genetic structure and species divergence in marine nematodes are still poorly understood, especially in remote areas such as the Southern Ocean. We investigated genetic differentiation of species and populations of the free-living endobenthic nematode genera Sabatieria and Desmodora using nuclear 18S rDNA, internal transcribed spacer (ITS) rDNA, and mitochondrial cytochrome oxidase I (COI) gene sequences. Specimens were collected at continental shelf depths (200-500 m) near the Antarctic Peninsula, Scotia Arc and eastern side of the Weddell Sea. The two nematode genera co-occurred at all sampled locations, but with different vertical distribution in the sediment. A combination of phylogenetic (GMYC, Bayesian Inference, Maximum Likelihood) and population genetic (AMOVA) analyses were used for species delimitation and assessment of gene flow between sampling locations.ResultsSequence analyses resulted in the delimitation of four divergent species lineages in Sabatieria, two of which could not be discriminated morphologically and most likely constitute cryptic species. Two species were recognised in Desmodora, one of which showed large intraspecific morphological variation. Both genera comprised species that were restricted to one side of the Weddell Sea and species that were widely spread across it. Population genetic structuring was highly significant and more pronounced in the deeper sediment-dwelling Sabatieria species, which are generally less prone to resuspension and passive dispersal in the water column than surface Desmodora species.ConclusionsOur results indicate that gene flow is restricted at large geographic distance in the Southern Ocean, which casts doubt on the efficiency of the Weddell gyre and Antarctic Circumpolar Current in facilitating circum-Antarctic nematode species distributions. We also show that genetic structuring and cryptic speciation can be very different in nematode species isolated from the same geographic area, but with different habitat preferences (surface versus deeper sediment layers).

Dataset Information

Draft Whole-Genome Sequence of Psychrotrophic Arthrobacter sp. Strain 7749, Isolated from Antarctic Marine Sediments with Applications in Enantioselective Alcohol Oxidation.

Publications

Draft Whole-Genome Sequence of Psychrotrophic <i>Arthrobacter</i> sp. Strain 7749, Isolated from Antarctic Marine Sediments with Applications in Enantioselective Alcohol Oxidation.

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