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Aggregate formation in a freshwater bacterial strain induced by growth state and conspecific chemical cues
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SYSNO ASEP 0349539 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Aggregate formation in a freshwater bacterial strain induced by growth state and conspecific chemical cues Tvůrce(i) Blom, J. F. (CH)
Horňák, Karel (BC-A) RID
Šimek, Karel (BC-A) RID, ORCID
Pernthaler, J. (CH)Zdroj.dok. Environmental Microbiology. - : Wiley - ISSN 1462-2912
Roč. 12, č. 9 (2010), s. 2486-2495Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova aggregate formation ; Sphingobium sp. ; chemical cues ; growth state Vědní obor RIV EE - Mikrobiologie, virologie CEP GA206/08/0015 GA ČR - Grantová agentura ČR CEZ AV0Z60170517 - HBU-Z, BC-A (2005-2011) UT WOS 000281556900009 DOI 10.1111/j.1462-2920.2010.02222.x Anotace We investigated the induction of aggregate formation in the freshwater bacterium Sphingobium sp. strain Z007 by growth state and protistan grazing. In pure cultures of Sphingobium sp. strain Z007, the concentrations of single cells and aggregates inside and outside the dialysis membranes developed in a similar manner over 3 days of incubation. Cell production of Sphingobium sp. strain Z007 was enhanced in the presence of another isolate, Limnohabitans planktonicus, outside the bags, and even more so if that strain was additionally grazed upon by the bacterivorous flagellate Poterioochromonas sp. The feeding of flagellates on Sphingobium sp. strain Z007 outside the dialysis bags led to significantly higher proportions of aggregates inside the bags. This was not paralleled by an increase in growth rates. We conclude that two mechanisms, growth state and the possible release of infochemicals by the predator, may induce aggregate formation of Sphingobium sp. strain Z007. Pracoviště Biologické centrum (od r. 2006) Kontakt Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Rok sběru 2011
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