Biomass Yield Efficiency of the Marine Anammox Bacterium, “Candidatus Scalindua sp.,” is Affected by Salinity

Microbes and environments Volume 30 Issue 1 Page 86-91 published_at 2015-03-24
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Title ( eng )
Biomass Yield Efficiency of the Marine Anammox Bacterium, “Candidatus Scalindua sp.,” is Affected by Salinity
Creator
Awata Takanori
Source Title
Microbes and environments
Volume 30
Issue 1
Start Page 86
End Page 91
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
anaerobic ammonium oxidation (anammox)
“Candidatus Scalindua”
biomass yield efficiency
salinity
volatile fatty acids
Descriptions
This research was partially supported by a Grant-in-Aid for Scientific Research (C) from the Ministry of Education, Culture, Sports, Science and Technology by the Japan Society for the Promotion of Science (JSPS) Fellows (T. Awata).
NDC
Construction. Civil engineering [ 510 ]
Language
eng
Resource Type journal article
Publisher
Japanese Society of Microbical Ecology
Date of Issued 2015-03-24
Rights
本文データは学協会の許諾に基づきCiNiiから複製したものである
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 1342-6311
[NCID] AA11173196
[DOI] 10.1264/jsme2.ME14088
[NAID] 130005061716 isVersionOf
[DOI] http://doi.org/10.1264/jsme2.ME14088 isVersionOf