Association of nitrogen micro-cycle functional genes in subsurface wastewater infiltration systems

被引：68

作者：

Ji, Guodong ^{[1
]}

Zhi, Wei ^{[1
]}

Tan, Yufei ^{[1
,2
]}

机构：

[1] Peking Univ, Dept Environm Engn, Key Lab Water & Sediment Sci, Minist Educ, Beijing 100871, Peoples R China

[2] Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China

来源：

ECOLOGICAL ENGINEERING | 2012年 / 44卷

基金：

中国国家自然科学基金;

关键词：

SWIS; Nitrogen micro-cycle; Functional genes; Association; NITRIC-OXIDE REDUCTASE; DENITRIFYING BACTERIA; NITRATE REDUCTASES; OXIDIZING BACTERIA; QUANTIFICATION; DIVERSITY; ASSIMILATION; EFFICIENCY; CULTURES; BEHAVIOR;

D O I：

10.1016/j.ecoleng.2012.04.007

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The distribution patterns of amoA, nxrA, narG, napA, nirK, qnorB, nosZ, nas, nifH, and 16S rRNA of anammox bacteria (AND) were quantitatively studied in four subsurface wastewater infiltration systems (SWIS). Furthermore, the ecological groups of nitrogen transformation functional genes and key nitrogen transformation pathways were investigated. The results indicated that ANO, qnorB, MITI, and other dominant genes were mainly enriched in the up-flow area of the SWIS: amoA, nxrA, nirK, narG, napA, and other rare genes together with the nosZ dominant gene community were mainly enriched in the infiltration area. The key mechanism of denitrification in the up-flow area was the coupled collaboration between anammox and reduction of NO to N2O catalyzed by the qnorB gene codase, while the key mechanisms of denitrification in the infiltration area included: anammox, nitrification, and the coupled collaboration between aerobic denitrification and reduction of N2O to N-2 catalyzed by the nosZ gene codase. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：269 / 277

页数：9

共 42 条

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