由不同“候选聚磷菌”进化枝主导的两种生物除磷污泥的反硝化能力
Denitrification capabilities of two biological phosphorus removal sludges dominated by different "Candidatus Accumulibacter" clades.
作者信息
Flowers Jason J, He Shaomei, Yilmaz Safak, Noguera Daniel R, McMahon Katherine D
机构信息
Department of Civil and Environmental Engineering, University of Wisconsin at Madison, Madison, WI, 53706, USA.
出版信息
Environ Microbiol Rep. 2009 Dec;1(6):583-588. doi: 10.1111/j.1758-2229.2009.00090.x.
Abstract
The capability of "Candidatus Accumulibacter" to use nitrate as an electron acceptor for phosphorus uptake was investigated using two activated sludge communities. The two communities were enriched in Accumulibacter clade IA and clade IIA, respectively. By performing a series of batch experiments, we found that clade IA was able to couple nitrate reduction with phosphorus uptake, but clade IIA could not. These results agree with a previously proposed hypothesis that different populations of Accumulibacter have different nitrate reduction capabilities, and they will help to understand the ecological roles that these two clades provide.
摘要
利用两个活性污泥群落研究了“暂定聚磷菌属”利用硝酸盐作为电子受体进行磷吸收的能力。这两个群落分别富含聚磷菌属IA分支和IIA分支。通过进行一系列批次实验，我们发现IA分支能够将硝酸盐还原与磷吸收耦合起来，但IIA分支则不能。这些结果与先前提出的一个假设相符，即聚磷菌属的不同种群具有不同的硝酸盐还原能力，它们将有助于理解这两个分支所发挥的生态作用。
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