Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/9560
Title: Leachates from municipal solid waste disposal sites harbor similar, novel nitrogen-cycling bacterial communities
Authors: Zhu, S
Chan, GYS 
Cai, KL
Qu, LH
Huang, LN
Keywords: Ammonia-oxidizing bacteria
amoA
Denitrifying bacteria
Municipal solid waste
Nitrous oxide
nosZ
Issue Date: 2007
Publisher: Blackwell Publishing
Source: FEMA microbiology letters, 2007, v. 267, no. 2, p. 236-242 How to cite?
Journal: FEMS Microbiology Letters 
Abstract: High emissions of nitrous oxide (N2O) have recently been documented at municipal solid waste (MSW) landfills. However, the biodiversity of the bacterial populations involved remains unexplored. In this study, we investigated communities of ammonia-oxidizing bacteria (AOB) and denitrifying bacteria associated with the leachates from three MSW disposal sites by examining the diversity of the ammonia monooxygenase structural gene amoA and the nitrous oxide reductase gene nosZ, respectively. Cloning and phylogenetic analysis of the functional genes revealed novel and similar groups of prokaryotes involved in nitrogen cycling in the leachates with different chemical compositions. All amoA sequences recovered grouped within the Nitrosomonas europaea cluster in the Betaproteobacteria, with the vast majority showed only relatively moderate sequence similarities to known AOB but were exclusively most similar to environmental clones previously retrieved from wastewater treatment plants. All nosZ sequences retrieved did not cluster with any hitherto reported nosZ genes and were only remotely related to recognized denitrifiers from the Gammaproteobacteria and thus could not be affiliated. Significant overlap was found for the three denitrifying nosZ leachate communities. Our study suggests a significant selection of the novel N-cycling groups by the unique environment at these MSW disposal sites.
URI: http://hdl.handle.net/10397/9560
DOI: 10.1111/j.1574-6968.2006.00560.x
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

9
Last Week
0
Last month
0
Citations as of Aug 12, 2017

WEB OF SCIENCETM
Citations

7
Last Week
0
Last month
0
Citations as of Aug 12, 2017

Page view(s)

32
Last Week
0
Last month
Checked on Aug 13, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.