NDLI: Bacterial structure and spatiotemporal distribution in a horizontal subsurface flow constructed wetland

Content Provider	Springer Nature Link
Author	Bouali, Moez Zrafi, Ines Bakhrouf, Amina Chaussonnerie, Sébastien Sghir, Abdelghani
Copyright Year	2013
Abstract	In this study, bacterial community structure in a horizontal subsurface flow constructed wetland (HSF-CW) planted with Phragmites australis was investigated using the 16S rRNA cloning–sequencing technique. Two layer depths were considered: the rhizosphere zone (RH) and the deep-layer zone (DL) in different sampling periods. Bacteria-specific primers 008F and 1492R were used to amplify the 16S rRNA genes and construct six clone libraries. A total of 1,284 individual sequences were used to assess the HSF-CW diversity. Phylogenetic analysis of RH and DL clone libraries shows that 41.57 and 42.17 % of the 16S rRNA sequences are affiliated with the Proteobacteria in the RH and the DL, respectively. The remaining major phylogenetic groups are Bacteroidetes, Planctomycetes, and Chloroflexi with 11.78, 9.36, and 7.6 %, respectively, in the RH and 11.38, 6.48, and 7.65 % in the DL, respectively. Minor divisions such as Verrucomicrobia, TM7, Nitrospira, and Gemmatimonadetes represented <6 % of the total sequences, while 14.2 % were unidentified Bacteria. Among the Proteobacteria, the Alphaproteobacteria subclass is represented in both locations, while the Deltaproteobacteria and Gammaproteobacteria subclasses were predominant in the RH and the DL, respectively. Results suggest that Archaea and Bacteria in the HSF-CW are the essential actors in the nitrogen cycle and that the established microbial community is efficient in nitrogen removal from wastewater.
Starting Page	3191
Ending Page	3203
Page Count	13
File Format	PDF
ISSN	01757598
Journal	Applied Microbiology and Biotechnology
Volume Number	98
Issue Number	7
e-ISSN	14320614
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-11-06
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Constructed wetland Bacterial diversity Rhizosphere Wastewater treatment Microbiology Microbial Genetics and Genomics Biotechnology
Content Type	Text
Resource Type	Article
Subject	Medicine Applied Microbiology and Biotechnology Biotechnology

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