Abstract：
: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.
journal_name
World J Microbiol Biotechnoljournal_title
World journal of microbiology & biotechnologyauthors
Wang Z,Qi Y,Wang J,Pei Ydoi
10.1007/s11274-012-1090-6subject
Has Abstractpub_date
2012-09-01 00:00:00pages
2801-11issue
9eissn
0959-3993issn
1573-0972journal_volume
28pub_type
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journal_title：World journal of microbiology & biotechnology
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journal_title：World journal of microbiology & biotechnology
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journal_title：World journal of microbiology & biotechnology
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