Linked Life Data

15717160

Source:http://linkedlifedata.com/resource/pubmed/id/15717160

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2005-3-24
pubmed:abstractText
Recent studies indicated that bioluminescence of the marine bacterium Vibrio harveyi may both stimulate DNA repair and contribute to detoxification of deleterious oxygen derivatives. Therefore, it was also proposed that these reactions can be considered biological roles of bacterial luminescence and might act as evolutionary drives in development of luminous systems. However, experimental evidence for the physiological role of luciferase in protection of cells against oxidative stress has been demonstrated only in one bacterial species, raising the question whether this is a specific or a more general phenomenon. Here we demonstrate that in the presence of various oxidants (hydrogen peroxide, cumene hydroperoxide, t-butyl hydroperoxide and ferrous ions) growth of dark mutants of different strains of Vibrio fischeri and Photobacterium leiognathi is impaired relative to wild-type bacteria, though to various extents. Deleterious effects of oxidants on the mutants could be reduced (with different efficiency) by addition of antioxidants, A-TEMPO or 4OH-TEMPO. These results support the hypotheses that (1) activities of bacterial luciferases may detoxify deleterious oxygen derivatives, and (2) significantly different efficiencies of this reaction are characteristic for various luciferases.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0302-8933
pubmed:author
pubmed:issnType
Print
pubmed:volume
183
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
203-8
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Sensitivity of dark mutants of various strains of luminescent bacteria to reactive oxygen species.
pubmed:affiliation
Department of Molecular Biology, University of Gda?sk, K?adki 24, 80-822 Gdansk, Poland.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't