Data/hora: 16/06/2024 15:10:53

Provedor de dados: 	58	
País: 	Brazil	
Título: 	Abundance and diversity of ammonia-oxidizing bacteria in relation to ammonium in a Chinese shallow eutrophic urban lake	
Autores: 	Qiu,Shanlian; Chen,Guoyuan; Zhou,Yiyong.	
Data: 	2010-03-01	
Ano: 	2010	
Palavras-chave: 	Ammonia-oxidizing bacteria; Abundance; AmoA; Diversity.	
Resumo: 	The measures of most-probable-number and restriction fragment length polymorphism analysis were used to analyze the abundance and diversity of ammonia-oxidizing bacteria in sediment of a Chinese shallow eutrophic urban lake (Lake Yuehu). Among the 5 sampling sites, ammonia concentration in interstitial water was positively proportional not only to the content of organic matter, but also to ammonia-oxidizing bacteria numbers (at a magnitude of 10(5) cells g-1 dry weight) in sediment significantly. Furthermore, the diversity of ammonia-oxidizing bacteria were determined by means of PCR primers targeting the amoA gene with five gene libraries created and restriction pattern analysis. The 13 restriction patterns were recorded with 4 ones being common among all sampling sites. The 8 restriction patterns including 4 unique ones were found at the site with the highest NH4+ concentrations in interstitial water, while, there were only common patterns without unique ones at the site with the lowest NH4+ concentrations in interstitial water. Phylogenetic analysis showed that the amoA fragments retrieved belong to Nitrosomonas oligotropha &amp;amp; ureae lineage, N. europaea lineage, N. communis lineage and Nitrosospira lineage, most of which were affiliated with the genus Nitrosomonas. The N. oligotropha &amp;amp; ureae-like bacteria were the dominant species. Thus, the abundance and diversity of sediment AOB is closely linked to ammonium status in eutrophic lakes.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000100031	
Editor: 	Sociedade Brasileira de Microbiologia	
Relação: 	10.1590/S1517-83822010000100031	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Microbiology  v.41 n.1 2010	
Fonte: 	info:eu-repo/semantics/openAccess