Ecotype diversity and conversion in Photobacterium profundum strains

Federico M. Lauro, Emiley A. Eloe-Fadrosh, Taylor K S Richter, Nicola Vitulo, Steven Ferriera, Justin H. Johnson, Douglas H. Bartlett

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)
1 Downloads (Pure)

Abstract

Photobacterium profundum is a cosmopolitan marine bacterium capable of growth at low temperature and high hydrostatic pressure. Multiple strains of P. profundum have been isolated from different depths of the ocean and display remarkable differences in their physiological responses to pressure. The genome sequence of the deep-sea piezopsychrophilic strain Photobacterium profundum SS9 has provided some clues regarding the genetic features required for growth in the deep sea. The sequenced genome of Photobacterium profundum strain 3TCK, a non-piezophilic strain isolated from a shallow-water environment, is now available and its analysis expands the identification of unique genomic features that correlate to environmental differences and define the Hutchinsonian niche of each strain. These differences range from variations in gene content to specific gene sequences under positive selection. Genome plasticity between Photobacterium bathytypes was investigated when strain 3TCK-specific genes involved in photorepair were introduced to SS9, demonstrating that horizontal gene transfer can provide a mechanism for rapid colonisation of new environments.

Original languageEnglish
Article numbere96953
Pages (from-to)1-10
Number of pages10
JournalPLoS ONE
Volume9
Issue number5
DOIs
Publication statusPublished - 13 May 2014
Externally publishedYes

Bibliographical note

Copyright the Author(s) 2014. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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