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dc.contributor.author
Hou, Shengwei
dc.contributor.author
López-Pérez, Mario
dc.contributor.author
Pfreundt, Ulrike
dc.contributor.author
Belkin, Natalia
dc.contributor.author
Stüber, Kurt
dc.contributor.author
Huettel, Bruno
dc.contributor.author
Reinhardt, Richard
dc.contributor.author
Berman-Frank, Ilana
dc.contributor.author
Rodriguez-Valera, Francisco
dc.contributor.author
Hess, Wolfgang R.
dc.date.accessioned
2018-03-27T08:22:15Z
dc.date.available
2018-01-27T04:04:36Z
dc.date.available
2018-03-27T08:22:15Z
dc.date.issued
2018
dc.identifier.other
10.1038/s41396-017-0034-4
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/235594
dc.identifier.doi
10.3929/ethz-b-000235594
dc.description.abstract
Interactions between co-existing microorganisms deeply affect the physiology of the involved organisms and, ultimately, the function of the ecosystem as a whole. Copiotrophic Alteromonas are marine gammaproteobacteria that thrive during the late stages of phytoplankton blooms in the marine environment and in laboratory co-cultures with cyanobacteria such as Trichodesmium. The response of this heterotroph to the sometimes rapid and transient changes in nutrient supply when the phototroph crashes is not well understood. Here, we isolated and sequenced the strain Alteromonas macleodii str. Te101 from a laboratory culture of Trichodesmium erythraeum IMS101, yielding a chromosome of 4.63 Mb and a single plasmid of 237 kb. Increasing salinities to ≥43 ppt inhibited the growth of Trichodesmium but stimulated growth of the associated Alteromonas. We characterized the transcriptomic responses of both microorganisms and identified the complement of active transcriptional start sites in Alteromonas at single-nucleotide resolution. In replicate cultures, a similar set of genes became activated in Alteromonas when growth rates of Trichodesmium declined and mortality was high. The parallel activation of fliA, rpoS and of flagellar assembly and growth-related genes indicated that Alteromonas might have increased cell motility, growth, and multiple biosynthetic activities. Genes with the highest expression in the data set were three small RNAs (Aln1a-c) that were identified as analogs of the small RNAs CsrB-C in E. coli or RsmX-Z in pathogenic bacteria. Together with the carbon storage protein A (CsrA) homolog Te101_05290, these RNAs likely control the expression of numerous genes in responding to changes in the environment.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Nature
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Benefit from decline: the primary transcriptome of Alteromonas macleodii str. Te101 during Trichodesmium demise
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2018-01-15
ethz.journal.title
ISME Journal
ethz.journal.volume
12
en_US
ethz.pages.start
981
en_US
ethz.pages.end
996
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Basingstoke
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2018-01-27T04:04:44Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2018-03-27T08:22:22Z
ethz.rosetta.lastUpdated
2018-12-02T09:20:25Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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