Complete genome sequence of Dyadobacter sp. 32, isolated from a culture of the freshwater diatom Cymbella microcephala

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2020
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Morrissey, Kathryn Lee
Willems, Anne
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Bacteria have been shown to be involved in different species-specific interactions with eukaryotic algae such as diatoms, impacting important ecosystem processes. Recently, a strain assigned to Dyadobacter, named ‘species 32’, has been shown to be involved in a number of ecologically relevant diatom processes, such as biofilm formation or growth enhancement, depending on the diatom species. This bacterium was originally isolated from a culture of freshwater benthic diatoms that originated from an epilithic biofilm, in which both bacteria and diatoms coexist. A single complete circular chromosome of Dyadobacter sp. 32 was assembled with a length of 7,101,228 bp, containing 6062 protein coding genes and 3 rRNA operons. A number of interesting genetic features were found, such as a putative zeaxanthin biosynthetic gene cluster. A large number of polysaccharide utilizing gene clusters were also detected, along with genes potentially acquired from other bacteria through horizontal gene transfer, and genes previously identified in other algae-bacteria interactions. These data serve to increase our understanding of specific interactions within freshwater biofilms, and identify a number of gene targets with which to study the molecular basis of diatom-bacteria interactions.

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570 Biowissenschaften, Biologie
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Biofilm; Zeaxanthin; Interspecies signaling; Phycosphere; Extracellular polymeric substances
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ISO 690DOW, Lachlan, Kathryn Lee MORRISSEY, Anne WILLEMS, Peter G. KROTH, 2020. Complete genome sequence of Dyadobacter sp. 32, isolated from a culture of the freshwater diatom Cymbella microcephala. In: Marine Genomics. Elsevier. 2020, 52, pp. 100720. ISSN 1874-7787. eISSN 1876-7478. Available under: doi: 10.1016/j.margen.2019.100720
BibTex
@article{Dow2020-08Compl-47499,
  year={2020},
  doi={10.1016/j.margen.2019.100720},
  title={Complete genome sequence of Dyadobacter sp. 32, isolated from a culture of the freshwater diatom Cymbella microcephala},
  volume={52},
  issn={1874-7787},
  journal={Marine Genomics},
  author={Dow, Lachlan and Morrissey, Kathryn Lee and Willems, Anne and Kroth, Peter G.}
}
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