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Microbes Environ

Title:		"Biomass yield efficiency of the marine anammox bacterium, 'Candidatus Scalindua sp.,' is affected by salinity"
Author(s):		Awata T; Kindaichi T; Ozaki N; Ohashi A;
Address:		"EcoTopia Science Institute, Nagoya University"
Journal Title:		Microbes Environ
Year:		2015
Volume:		20150213
Issue:		1
Page Number:		86 - 91
DOI:		10.1264/jsme2.ME14088
ISSN/ISBN:		1347-4405 (Electronic) 1342-6311 (Print) 1342-6311 (Linking)
Abstract:		"The growth rate and biomass yield efficiency of anaerobic ammonium oxidation (anammox) bacteria are markedly lower than those of most other autotrophic bacteria. Among the anammox bacterial genera, the growth rate and biomass yield of the marine anammox bacterium 'Candidatus Scalindua sp.' is still lower than those of other anammox bacteria enriched from freshwater environments. The activity and growth of marine anammox bacteria are generally considered to be affected by the presence of salinity and organic compounds. Therefore, in the present study, the effects of salinity and volatile fatty acids (VFAs) on the anammox activity, inorganic carbon uptake, and biomass yield efficiency of 'Ca. Scalindua sp.' enriched from the marine sediments of Hiroshima Bay, Japan, were investigated in batch experiments. Differences in VFA concentrations (0-10 mM) were observed under varying salinities (0.5%-4%). Anammox activity was high at 0.5%-3.5% salinity, but was 30% lower at 4% salinity. In addition, carbon uptake was higher at 1.5%-3.5% salinity. The results of the present study clearly demonstrated that the biomass yield efficiency of the marine anammox bacterium 'Ca. Scalindua sp.' was significantly affected by salinity. On the other hand, the presence of VFAs up to 10 mM did not affect anammox activity, carbon uptake, or biomass yield efficiency"
Keywords:		"Ammonium Compounds/metabolism Bacteria, Anaerobic/*drug effects/*growth & development/metabolism Biomass Carbon/metabolism Fatty Acids, Volatile/metabolism Geologic Sediments/*microbiology Japan Oxidation-Reduction Root Cause Analysis *Salinity;"
Notes:		"MedlineAwata, Takanori Kindaichi, Tomonori Ozaki, Noriatsu Ohashi, Akiyoshi eng Research Support, Non-U.S. Gov't Japan 2015/03/06 Microbes Environ. 2015; 30(1):86-91. doi: 10.1264/jsme2.ME14088. Epub 2015 Feb 13"