A nitrous oxide (N2O)-consuming bacterium isolated from farmland soil actively consumed N2O under high pH conditions. An acetylene inhibition assay did not show the denitrification of N2 to N2O by this bacterium. When N2O was injected as the only nitrogen source, this bacterium did not assimilate N2O. A polymerase chain reaction demonstrated that this bacterium did not have the typical nosZ gene. This bacterium belonged to Chitinophagaceae, but did not belong to known families that include bacteria with the atypical nosZ. This is the first study to show that a non-denitrifier actively reduces N2O, even under high pH conditions.

中文翻译：

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从土壤中分离出的未知非脱硝细菌可在高pH条件下有效还原一氧化二氮。

从农田土壤中分离的消耗一氧化二氮（N2O）的细菌在高pH条件下会主动消耗N2O。乙炔抑制试验未显示该细菌将N2反硝化为N2O。当注入N2O作为唯一的氮源时，该细菌不会吸收N2O。聚合酶链反应表明该细菌没有典型的nosZ基因。该细菌属于甲壳动物科，但不属于已知家族，其中包括具有非典型nosZ的细菌。这是第一个表明非脱硝剂即使在高pH条件下也能主动还原N2O的研究。