Interspecific competition and protistan grazing affect the coexistence of freshwater betaproteobacterial strains.
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F16%3A00459642" target="_blank" >RIV/60077344:_____/16:00459642 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1093/femsec/fiv156" target="_blank" >http://dx.doi.org/10.1093/femsec/fiv156</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/femsec/fiv156" target="_blank" >10.1093/femsec/fiv156</a>
Alternative languages
Result language
angličtina
Original language name
Interspecific competition and protistan grazing affect the coexistence of freshwater betaproteobacterial strains.
Original language description
The competitive strength of four cosmopolitan freshwater betaproteobacterial isolates was investigated in the presence or absence of bacterivorous flagellates during continuous cultivation in artificial minimal medium at two dilution rates. Bacteria reached similar abundance and growth rate in monocultures, but in co-cultures, two strains (Acidovorax sp. and Massilia sp.) displayed significantly higher numbers and growth rates. These potential cross-feeding benefits were also supported by a high nutritional versatility of the two strains. In contrast, Hydrogenophaga sp. was seemingly less competitive or even inhibited by co-cultivation, and Limnohabitans planktonicus displayed striking abundance fluctuations. The latter two strains were least versatile in the uptake of different carbon sources and thus suffered more from interspecific competition. Moreover, remarkable strain-specific responses appeared when bacteria experienced increasing loss rates due to grazing and/or raised dilution rates. Limnohabitans planktonicus developed no successful defence strategy and was close to extinction. Massilia sp. formed grazing-resistant filaments exclusively at low dilution, but was highly reduced at increased flow-through. Acidovorax sp. was selectively ingested, but compensated grazing losses with accelerated growth rates and formed (co-)aggregates together with Hydrogenophaga sp. to escape predation at high flow-through. These species-specific interactions, growth responses and defence strategies strongly modulate mixed microbial assemblages and the microbial food web.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
EE - Microbiology, virology
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA13-00243S" target="_blank" >GA13-00243S: Unveiling life strategies of selected groups of planktonic Betaproteobacteria in relationship to carbon flow to higher trophic levels</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
FEMS Microbiology Ecology
ISSN
0168-6496
e-ISSN
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Volume of the periodical
92
Issue of the periodical within the volume
2
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
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UT code for WoS article
000371249600004
EID of the result in the Scopus database
2-s2.0-84960115902