Contrasting trends in distribution of four major planktonic betaproteobacterial groups along a pH gradient of epilimnia of 72 freshwater habitats

0379238 - BC 2013 RIV GB eng J - Článek v odborném periodiku
Jezbera, Jan - Jezberová, Jitka - Koll, U. - Horňák, Karel - Šimek, Karel - Hahn, M.W.
Contrasting trends in distribution of four major planktonic betaproteobacterial groups along a pH gradient of epilimnia of 72 freshwater habitats.
FEMS Microbiology Ecology. Roč. 81, č. 2 (2012), s. 467-479. ISSN 0168-6496. E-ISSN 1574-6941
Grant CEP: GA ČR(CZ) GAP504/10/0566; GA ČR(CZ) GA206/08/0015
Institucionální podpora: RVO:60077344
Klíčová slova: in-situ hybridization * bacterial community composition * dissolved organic-matter
Kód oboru RIV: EE - Mikrobiologie, virologie
Impakt faktor: 3.563, rok: 2012

The distribution and abundance of Betaproteobacteria and three of its genera –Limnohabitans (R-BT065 lineage), Polynucleobacter (including subclusters Polynucleobacter necessarius and Polynucleobacter acidiphobus/Polynucleobacter difficilis), and Methylophilus – across the epilimnia of 72 limnologically diverse freshwater habitats were investigated using fluorescence in situ hybridization. Betaproteobacteria comprised on average 29.1%, Polynucleobacter 11.6%, P. necessarius 10.1%, P. acidiphobus/difficilis 0.5%, Limnohabitans 8.9%, and Methylophilus 0.9% of total bacterioplankton cells in the investigated habitats. Polynucleobacter necessarius and Limnohabitans coexisted in the majority of habitats but showed contrasting abundance patterns along the pH gradient of habitats (pH, 3.8–8.5). The observed patterns could be explained by different preferences for substrate sources, that is, substances of humic origin in acidic waters and algal-derived substances in alkaline waters.
Trvalý link: http://hdl.handle.net/11104/0210493