2019年10月
Cobalt-dependent inhibition of nitrite oxidation in Nitrobacter winogradskyi
JOURNAL OF BIOSCIENCE AND BIOENGINEERING
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- 巻
- 128
- 号
- 4
- 開始ページ
- 463
- 終了ページ
- 467
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.jbiosc.2019.04.001
- 出版者・発行元
- SOC BIOSCIENCE BIOENGINEERING JAPAN
Nitrobacter winogradskyi is an abundant, intensively studied autotrophic nitrite-oxidizing bacterium, which is frequently used as a model strain in the two-step nitrification of ammonia (NH3) to nitrate (NO3) via nitrite (NO2-), either in activated sludge, agricultural field studies or more recently in artificial microbial consortia for organic hydroponics. We observed a hitherto unknown cobalt ion-dependent inhibition of cell growth and NO2- oxidation activity of N. winogradskyi in a mineral medium, which strongly depended on accompanying Ca2+ and Mg2+ concentrations. This inhibition was bacteriostatic, but susceptible to natural chelators. L-Histidine effectively restored cell growth and NO2- oxidation activity of N. winogradskyi in mineral media containing Co2+ with >90% recovery. Our results suggest that Co2+ competed with alkaline earth metals during uptake and that its toxicity was significantly reduced by complexation. (C) 2019, The Society for Biotechnology, Japan. All rights reserved.
- リンク情報
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- DOI
- https://doi.org/10.1016/j.jbiosc.2019.04.001
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000498287800012&DestApp=WOS_CPL
- URL
- https://www.sciencedirect.com/science/article/pii/S138917231830968X?via%3Dihub
- ID情報
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- DOI : 10.1016/j.jbiosc.2019.04.001
- ISSN : 1389-1723
- eISSN : 1347-4421
- Web of Science ID : WOS:000498287800012