Linked Life Data

20722731

Source:http://linkedlifedata.com/resource/pubmed/id/20722731

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2010-11-2
pubmed:abstractText
Under certain conditions, otherwise parasitic organisms may become beneficial to their host. Parasite-mediated heat and osmotic stress resistance have been demonstrated for Paramecium caudatum, infected by several species of parasitic bacteria of the genus Holospora. Here, using the micronucleus-specific bacterium Holospora undulata, we investigate how infection mediates the response of two genotypes (clones 'K8' and 'VEN') of P. caudatum to heat (35 °C) and osmotic (0.24% NaCl) stress. In contrast to previous findings, we find no evidence for heat stress protection in infected individuals. We do, however, show an effect of symbiont-mediated osmotic stress resistance for the K8 clone, with infected individuals having higher survival than their uninfected counterparts up to 24 h after the onset of salt exposure. Despite this, both infected and uninfected individuals of the VEN clone showed higher survival rates than clone K8 individuals under osmotic stress. Thus, it would seem that parasite-mediated stress protection is restricted to certain combinations of host genotypes and types of stress and does not represent a general phenomenon in this system.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
1574-6941
pubmed:author
pubmed:copyrightInfo
© 2010 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved.
pubmed:issnType
Electronic
pubmed:volume
74
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
353-60
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Parasite-mediated protection against osmotic stress for Paramecium caudatum infected by Holospora undulata is host genotype specific.
pubmed:affiliation
Institut des Sciences de l'Evolution (ISEM), UMR 5554, Université Montpellier 2, Montpellier, France. alison.duncan@univ-montp2.fr
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't