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Whole Genome Sequence of Marinobacter salarius Strain SMR5, Shown to Promote Growth in its Diatom Host.

Journal article
Authors Mats H. Töpel
Matthew I. M. Pinder
Oskar N. Johansson
Olga Kourtchenko
Anna Godhe
Adrian K Clarke
Published in Journal of Genomics
Volume 7
Pages 60-63
ISSN 1839-9940
Publication year 2019
Published at Department of marine sciences
Department of Biological and Environmental Sciences
Pages 60-63
Language en
Subject categories Bioinformatics and Systems Biology


Attempts to obtain axenic cultures of the marine diatom Skeletonema marinoi often result in poor growth, indicating the importance of the microbiome to the growth of its host. In order to identify the precise roles played by these associated bacteria, individual strains were isolated, cultured and sequenced. We report the genome of one such strain - SMR5, isolated from a culture of S. marinoi strain R05AC sampled from top layer sediments of the Swedish west coast. Its genome of 4,630,160 bp consists of a circular chromosome and one circular plasmid, and 4,263 CDSs were inferred in the annotation. Comparison of 16S rRNA sequences and other markers, along with phylotaxonomic analysis, leads us to place strain SMR5 in the taxon Marinobacter salarius. Pathway analysis and previous experimental work suggest that this strain may produce a growth factor, as well as improve iron availability for its host via siderophores.

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