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Citation
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HERO ID
1000091
Reference Type
Journal Article
Title
Community shift of ammonia-oxidizing bacteria along an anthropogenic pollution gradient from the Pearl River Delta to the South China Sea
Author(s)
Cao, H; Hong, Y; Li, M; Gu, JD
Year
2012
Is Peer Reviewed?
Yes
Journal
Applied Microbiology and Biotechnology
ISSN:
0175-7598
EISSN:
1432-0614
Volume
94
Issue
1
Page Numbers
247-259
Language
English
PMID
22005744
DOI
10.1007/s00253-011-3636-1
Web of Science Id
WOS:000301747500025
Abstract
The phylogenetic diversity and abundance of ammonia-oxidizing beta-proteobacteria (beta-AOB) was analyzed along an anthropogenic pollution gradient from the coastal Pearl River Delta to the South China Sea using the ammonia monooxygenase subunit A (amoA) gene. Along the gradient from coastal to the open ocean, the phylogenetic diversity of the dominant genus changed from Nitrosomonas to Nitrosospira, indicating the niche specificity by these two genera as both salinity and anthropogenic influence were major factors involved. The diversity of bacterial amoA gene was also variable along the gradient, with the highest in the deep-sea sediments, followed by the marshes sediments and the lowest in the coastal areas. Within the Nitrosomonas-related clade, four distinct lineages were identified including a putative new one (A5-16) from the different sites over the large geographical area. In the Nitrosospira-related clade, the habitat-specific lineages to the deep-sea and coastal sediments were identified. This study also provides strong support that Nitrosomonas genus, especially Nitrosomonas oligotropha lineage (6a) could be a potential bio-indicator species for pollution or freshwater/wastewater input into coastal environments. A suite of statistical analyses used showed that water depth and temperature were major factors shaping the community structure of beta-AOB in this study area.
Keywords
Ammonia monooxygenase alpha-subunit (amoA) gene; Ammonia-oxidizing bacteria (AOB); South China Sea; Anthropogenic pollution gradient
Tags
IRIS
•
Ammonia
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