Genomes of Alteromonas australica, a world apart

Lopez-Perez, M, Gonzaga, A, Ivanova, E and Rodriguez-Valera, F 2014, 'Genomes of Alteromonas australica, a world apart', BMC Genomics, vol. 15, no. 1, pp. 1-13.


Document type: Journal Article
Collection: Journal Articles

Title Genomes of Alteromonas australica, a world apart
Author(s) Lopez-Perez, M
Gonzaga, A
Ivanova, E
Rodriguez-Valera, F
Year 2014
Journal name BMC Genomics
Volume number 15
Issue number 1
Start page 1
End page 13
Total pages 13
Publisher BioMed Central Ltd.
Abstract Background: Alteromonas is a genus of marine bacteria that is very easy to isolate and grow in the laboratory. There are genomes available of the species Alteromonas macleodii from different locations around the world and an Alteromonas sp. isolated from a sediment in Korea. We have analyzed the genomes of two strains classified by 16S rRNA (>99% similarity) as the recently described species Alteromonas australica, and isolated from opposite ends of the world; A. australica DE170 was isolated in the South Adriatic (Mediterranean) at 1000 m depth while A. australica H17Twas isolated from a sea water sample collected in St Kilda Beach, Tasman Sea.Results: Although these two strains belong to a clearly different species from A. macleodii, the overall synteny is well preserved and the flexible genomic islands seem to code for equivalent functions and be located at similar positions. Actually the genomes of all the Alteromonas species known to date seem to preserve synteny quite well with the only exception of the sediment isolate SN2. Among the specific metabolic features found for the A. australica isolates there is the degradation of xylan and production of cellulose as extracellular polymeric substance by DE170 or the potential ethanol/methanol degradation by H17T.Conclusions: The genomes of the two A. australica isolates are not more different than those of strains of A. macleodii isolated from the same sample. Actually the recruitment from metagenomes indicates that all the available genomes are found in most tropical-temperate marine samples analyzed and that they live in consortia of several species and multiple clones within each. Overall the hydrolytic activities of the Alteromonas genus as a whole are impressive and fit with its known capabilities to exploit sudden inputs of organic matter in their environment.
Subject Biogeography and Phylogeography
Keyword(s) Alteromonas
Alteromonas australica
Biogeography
Genomic Island
Integron
Population genomics
DOI - identifier 10.1186/1471-2164-15-483
Copyright notice © 2014 López-Pérez et al. licensee BioMed Central Ltd. Creative Commons Attribution License
ISSN 1471-2164
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