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Assessing bacterial diversity in a seawater-processing wastewater treatment plant by 454-pyrosequencing of the 16S rRNA and amoA genes
Sánchez Martínez, M. Olga (Universitat Autònoma de Barcelona. Departament de Genètica i de Microbiologia)
Ferrera, Isabel (Universitat Autònoma de Barcelona. Departament de Genètica i de Microbiologia)
González, Jose M. (Universidad de La Laguna. Departamento de Microbiología)
Mas Gordi, Jordi (Universitat Autònoma de Barcelona. Departament de Genètica i de Microbiologia)

Data: 2013
Resum: The bacterial community composition of activated sludge from a wastewater treatment plant (Almería, Spain) with the particularity of using seawater was investigated by applying 454-pyrosequencing. The results showed that Deinococcus - Thermus, Proteobacteria, Chloroflexi and Bacteroidetes were the most abundant retrieved sequences, while other groups, such as Actinobacteria, Chlorobi, Deferribacteres, Firmicutes, Planctomycetes, Spirochaetes and Verrumicrobia were reported at lower proportions. Rarefaction analysis showed that very likely the diversity is higher than what could be described despite most of the unknown microorganisms probably correspond to rare diversity. Furthermore, the majority of taxa could not be classified at the genus level and likely represent novel members of these groups. Additionally, the nitrifiers in the sludge were characterized by pyrosequencing the amoA gene. In contrast, the nitrifying bacterial community, dominated by the genera Nitrosomonas, showed a low diversity and rarefaction curves exhibited saturation. These results suggest that only a few populations of low abundant but specialized bacteria are responsible for removal of ammonia in these saline wastewater systems.
Ajuts: Ministerio de Economía y Competitividad CSD2006-00044
Ministerio de Ciencia e Innovación CTQ2009-14390-C02-02
Drets: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. Creative Commons
Llengua: Anglès
Document: Article ; recerca ; Versió publicada
Publicat a: Microbial biotechnology, Vol. 6, Issue 4 (april 2013) , p. 435-442, ISSN 1751-7915

DOI: 10.1111/1751-7915.12052
PMID: 23574645

8 p, 363.7 KB

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