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Assessing niche separation in coexisting Limnohabitans strains through interactions with a competitor, viruses, and a bacterivore
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SYSNO ASEP 0343448 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Assessing niche separation in coexisting Limnohabitans strains through interactions with a competitor, viruses, and a bacterivore Author(s) Šimek, Karel (BC-A) RID, ORCID
Kasalický, Vojtěch (BC-A) RID, ORCID
Horňák, Karel (BC-A) RID
Hahn, M.W. (AT)
Weinbauer, M.G. (FR)Source Title Applied and Environmental Microbiology. - : American Society for Microbiology - ISSN 0099-2240
Roč. 76, č. 5 (2010), s. 1406-1416Number of pages 11 s. Language eng - English Country US - United States Keywords betaproteobacterial isolates ; genus Limnohabitans ; virus and grazer manipulation ; growth competition ; bacterial mortality sources Subject RIV EE - Microbiology, Virology R&D Projects GA206/08/0015 GA ČR - Czech Science Foundation (CSF) MEB060702 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z60170517 - HBU-Z, BC-A (2005-2011) UT WOS 000274855800013 DOI 10.1128/AEM.02517-09 Annotation We assessed niche separation in two closely related (99.1% 16S rRNA similarity) bacterial strains from the genus Limnohabitans. The two strains, designated B4 and D5, were isolated concurrently from a freshwater reservoir. Differences between the strains were examined through monitoring interactions with a bacterial competitor, Flectobacillus (FL), and virus- and predator-induced mortality. The mortality factors and competition between the strains significantly affected their population dynamics. While strains B4 and FL appeared vulnerable to environmental viruses, strain D5 did not. Predator-induced mortality had the greatest impact on FL, followed by that on D5 and then B4. The virus vulnerable B4 strain had smaller cells, but it was less subject to grazing. In contrast, the virus-resistant D5, with slightly larger grazing-vulnerable cells, was competitive with FL. Thus our data suggest contrasting ecophysiology and partial niche separation in two coexisting Limnohabitans strains. Workplace Biology Centre (since 2006) Contact Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Year of Publishing 2012
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