Presence of Cu-Type (NirK) and cd1 -Type (NirS) Nitrite Reductase Genes in the Denitrifying Bacterium Bradyrhizobium nitroreducens sp. nov

Microbes and Environments
Jeonghwan JangSatoshi Ishii

Abstract

Nitrite reductase is a key enzyme for denitrification. There are two types of nitrite reductases: copper-containing NirK and cytochrome cd1-containing NirS. Most denitrifiers possess either nirK or nirS, although a few strains been reported to possess both genes. We herein report the presence of nirK and nirS in the soil-denitrifying bacterium Bradyrhizobium sp. strain TSA1T. Both nirK and nirS were identified and actively transcribed under denitrification conditions. Based on physiological, chemotaxonomic, and genomic properties, strain TSA1T (=JCM 18858T=KCTC 62391T) represents a novel species within the genus Bradyrhizobium, for which we propose the name Bradyrhizobium nitroreducens sp. nov.

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Citations

Nov 11, 2018·Applied and Environmental Microbiology·Jeonghwan JangSatoshi Ishii
Mar 13, 2019·International Journal of Systematic and Evolutionary Microbiology·Philippe de Lajudie, J Peter W Young
Sep 27, 2019·Microbes and Environments·Ken Takai
May 31, 2020·International Journal of Systematic and Evolutionary Microbiology·Aharon Oren, George M Garrity
Sep 30, 2020·FEMS Microbiology Ecology·Takahiro SegawaSatoshi Ishii
Feb 6, 2021·Biochemical Society Transactions·Bryan RuizEliane Meilhoc
Apr 30, 2019·Systematic and Applied Microbiology·Juanita R AvontuurEmma T Steenkamp

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Datasets Mentioned

BETA
AB542368

Methods Mentioned

BETA
PCR
reverse transcription quantitative PCR

Software Mentioned

JSpecies
MEGA6
StepOnePlus Real - Time PCR System

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