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dc.contributor.author
Martini, Séverine
dc.contributor.author
Al Ali, Badr
dc.contributor.author
Garel, Marc
dc.contributor.author
Nerini, David
dc.contributor.author
Grossi, Vincent
dc.contributor.author
Pacton, Muriel
dc.contributor.author
Casalot, Laurence
dc.contributor.author
Cuny, Philippe
dc.contributor.author
Tamburini, Christian
dc.date.accessioned
2018-09-12T13:02:31Z
dc.date.available
2017-06-10T21:16:18Z
dc.date.available
2018-09-12T13:02:31Z
dc.date.issued
2013-06-20
dc.identifier.issn
1932-6203
dc.identifier.other
10.1371/journal.pone.0066580
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/71629
dc.identifier.doi
10.3929/ethz-b-000071629
dc.description.abstract
Bacterial bioluminescence is commonly found in the deep sea and depends on environmental conditions. Photobacterium phosphoreum ANT-2200 has been isolated from the NW Mediterranean Sea at 2200-m depth (in situ temperature of 13°C) close to the ANTARES neutrino telescope. The effects of hydrostatic pressure on its growth and luminescence have been investigated under controlled laboratory conditions, using a specifically developed high-pressure bioluminescence system. The growth rate and the maximum population density of the strain were determined at different temperatures (from 4 to 37°C) and pressures (from 0.1 to 40 MPa), using the logistic model to define these two growth parameters. Indeed, using the growth rate only, no optimal temperature and pressure could be determined. However, when both growth rate and maximum population density were jointly taken into account, a cross coefficient was calculated. By this way, the optimum growth conditions for P. phosphoreum ANT-2200 were found to be 30°C and, 10 MPa defining this strain as mesophile and moderately piezophile. Moreover, the ratio of unsaturated vs. saturated cellular fatty acids was found higher at 22 MPa, in agreement with previously described piezophile strains. P. phosphoreum ANT-2200 also appeared to respond to high pressure by forming cell aggregates. Its maximum population density was 1.2 times higher, with a similar growth rate, than at 0.1 MPa. Strain ANT-2200 grown at 22 MPa produced 3 times more bioluminescence. The proposed approach, mimicking, as close as possible, the in situ conditions, could help studying deep-sea bacterial bioluminescence and validating hypotheses concerning its role into the carbon cycle in the deep ocean.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Public Library Science
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
Effects of Hydrostatic Pressure on Growth and Luminescence of a Moderately-Piezophilic Luminous Bacteria Photobacterium phosphoreum ANT-2200
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
ethz.journal.title
PLoS ONE
ethz.journal.volume
8
en_US
ethz.journal.issue
6
en_US
ethz.journal.abbreviated
PLoS ONE
ethz.pages.start
e66580
en_US
ethz.size
9 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.nebis
006206116
ethz.publication.place
San Francisco, CA, USA
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::03775 - Haug, Gerald H. / Haug, Gerald H.
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::03775 - Haug, Gerald H. / Haug, Gerald H.
ethz.date.deposited
2017-06-10T21:19:23Z
ethz.source
ECIT
ethz.identifier.importid
imp593650fb9897793375
ethz.ecitpid
pub:113522
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-15T10:20:11Z
ethz.rosetta.lastUpdated
2021-02-15T01:43:29Z
ethz.rosetta.versionExported
true
ethz.COinS
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