Document Detail


Characteristics of aerobic and anaerobic ammonium-oxidizing bacteria in the hyporheic zone of a contaminated river.
MedLine Citation:
PMID:  22806720     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Both β-proteobacterial aerobic ammonium-oxidizing bacteria (AOB) and anaerobic ammonium-oxidizing (ANAMMOX) bacteria were investigated in the hyporheic zone of a contaminated river in China containing high ammonium levels and low chemical oxygen demand. Fluorescence in-situ hybridization (FISH), denaturing gradient gel electrophoresis (DGGE) and cloning-sequencing were employed in this study. FISH analysis illustrated that AOB (average population of 3.5 %) coexisted with ANAMMOX bacteria (0.7 %). The DGGE profile revealed a high abundance and diversity of bacteria at the water-air-soil interface rather than at the water-soil interface. The redundancy analysis correlated analysis showed that the diversity of ANAMMOX bacteria was positively related to the redox potential. The newly detected sequences of ANAMMOX organisms principally belonged to the genus Candidatus "Brocadia", while most ammonia monooxygenase subunit-A gene amoA sequences were affiliated with Nitrosospira and Nitrosomonas. These results suggest that the water-air-soil interface performs an important function in the nitrogen removal process and that the bioresources of AOB and ANAMMOX bacteria can potentially be utilized for the eutrophication of rivers.
Authors:
Ziyuan Wang; Yun Qi; Jun Wang; Yuansheng Pei
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-6-7
Journal Detail:
Title:  World journal of microbiology & biotechnology     Volume:  -     ISSN:  1573-0972     ISO Abbreviation:  -     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-7-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9012472     Medline TA:  World J Microbiol Biotechnol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
MOE Key Laboratory of Water and Sediment Sciences, School of Environment, Beijing Normal University, Beijing, 100875, China.
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