Nitrous oxide emission by the non-denitrifying, nitrate ammonifier Bacillus licheniformis

BMC Genomics
Yihua SunKim Heylen

Abstract

Firmicutes have the capacity to remove excess nitrate from the environment via either denitrification, dissimilatory nitrate reduction to ammonium or both. The recent renewed interest in their nitrogen metabolism has revealed many interesting features, the most striking being their wide variety of dissimilatory nitrate reduction pathways. In the present study, nitrous oxide production from Bacillus licheniformis, a ubiquitous Gram-positive, spore-forming species with many industrial applications, is investigated. B. licheniformis has long been considered a denitrifier but physiological experiments on three different strains demonstrated that nitrous oxide is not produced from nitrate in stoichiometric amounts, rather ammonium is the most important end-product, produced during fermentation. Significant strain dependency in end-product ratios, attributed to nitrite and ammonium, and medium dependency in nitrous oxide production were also observed. Genome analyses confirmed the lack of a nitrite reductase to nitric oxide, the key enzyme of denitrification. Based on the gene inventory and building on knowledge from other non-denitrifying nitrous oxide emitters, hypothetical pathways for nitrous oxide production, involving NarG, Nir...Continue Reading

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Citations

Jul 11, 2016·Environmental Pollution·Hugo RibeiroCatarina Magalhães
Nov 5, 2019·Journal of Basic Microbiology·Zeeshanur RahmanVed P Singh
Sep 14, 2019·Applied Microbiology and Biotechnology·Pedro Soares-CastroPedro M Santos
Jul 28, 2020·Water Environment Research : a Research Publication of the Water Environment Federation·Yonglei WangYao Qin
Jan 12, 2021·Environmental Technology·Shuqian SunZhida Huang
May 22, 2021·International Journal of Systematic and Evolutionary Microbiology· TimsyUndine Behrendt
Jul 23, 2021·Environmental Science & Technology·Xuefeng PengBess B Ward

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Datasets Mentioned

BETA
AZSZ00000000

Software Mentioned

Baseclear
SPSS23
RAST
CLC Genomics Workbench
pBLAST
PSI
EZChrom Elite
BLAST
InterProScan
Rapid Annotation Subsystem Technology ( RAST )

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