Background Anaerobic ammonium oxidation (anammox) is important for converting bioavailable nitrogen into dinitrogen gas, particularly in carbon poor environments. Yet, the diversity and prevalence of anammox bacteria in the terrestrial subsurface – a typically oligotrophic environment – is little understood across different geochemical conditions. To determine the distribution and activity of anammox bacteria across a range of aquifer lithologies and physicochemistries, we analysed 16S rRNA genes, metagenomes and metatranscriptomes, and quantified hydrazine synthase genes and transcripts sampled from 59 groundwater wells distributed over 1 240 km².

中文翻译：

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来自地球化学不同含水层的厌氧氨氧化细菌的代谢多样性和空气耐受性

背景厌氧氨氧化（anammox）对于将生物可利用的氮转化为氮气非常重要，尤其是在碳贫乏的环境中。然而，在不同的地球化学条件下，人们对陆地地下（一种典型的贫营养环境）中厌氧氨氧化细菌的多样性和流行性知之甚少。为了确定厌氧氨氧化细菌在一系列含水层岩性和物理化学中的分布和活性，我们分析了 16S rRNA 基因、宏基因组和宏转录组，并量化了从分布在 1 240 公里^{2 的}59 个地下水井中采样的肼合酶基因和转录本。