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在水族馆生物过器微生物群落中,ComammoxNitrospira是主要的氨氧化剂之一

Michelle M McKnight¹, Josh D Neufeld¹

¹Department of Biology, University of Waterloo, Waterloo, Ontario, Canada.

Applied and environmental microbiology

|June 20, 2024

概括

完全氧化氨 (comammox) 尼特洛斯皮拉在淡水水族馆的生物过器中很丰富,这挑战了以前的研究. 这些发现揭示了comammox Nitrospira的存在.

科学领域:

微生物生态学微生物生态学
环境微生物学环境微生物学
水生微生物学水生微生物学

背景情况:

在水族馆中,化对于将有毒氨转化为不那么有害的酸盐至关重要.
以前的研究表明,氨氧化古生物 (AOA) 在淡水水族馆生物过器中占主导地位,而不是氨氧化细菌 (AOB).
完全氧化氨 (comammox) Nitrospira在水族馆化中的作用以前被低估了.

研究的目的:

在淡水和盐水水族馆生物过器中分析微生物群落.
要量化所有已知的有氧氨氧化剂的丰度:AOA,AOB和comammoxNitrospira.
研究氨氧化剂在生物过器中的利基适应和生态相互作用.

主要方法:

从各种淡水和盐水水族馆收集了生物过器和水样.
利用16S rRNA基因测序来对微生物群落进行分析.
使用定量PCR (qPCR) 来量化特定的氨氧化剂amoA基因.

主要成果:

在所有淡水生物过器中检测到Comammox Nitrospira amoA基因,在大多数生物过器中占主导地位.
大多数淡水生物过器中都存在AOA,但比comammoxNitrospira少.
在淡水中发现AOB的丰度很低,除了在高氨条件下;盐水生物过器显示了不同的AOA/AOB丰度,而没有comammoxNitrospira.

结论:

康马莫克斯 (Comammox Nitrospira) 在淡水水族馆化中发挥着重要的,以前未被认可的作用.
在淡水和盐水环境中,氨氧化剂群落不同,这表明了利基适应.
水族馆作为研究化剂生态和微生物间相互作用的有价值的微观世界.

关键词:

氨氧化的氨氧化.水族馆水族馆的水族馆考古学是指古物 (archaea) 是指古物种.生物过器是一种生物过器.康马莫克斯 (comammox) 尼斯皮拉 (Nitrospira) 是一种常见的化化化化化化

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