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Silva,Krisle da; Nóbrega,Rafaela Simão Abrahão; Lima,Adriana Silva; Barberi,Alexandre; Moreira,Fatima Maria de Souza. |
Non-symbiotic diazotrophic bacteria are amongst the most important functional groups of soil-dwelling microorganisms. These bacteria contribute to plant growth predominantly through biological N2 fixation. Here, we evaluated the density and diversity of non-symbiotic diazotrophic bacteria in soils taken from diverse land use systems (LUS) in Amazonia using nitrogen-free media. A total of 30 soil samples were collected from the following LUS: pristine forest, young secondary forest, old secondary forest, agroforestry, agriculture and pasture. Bacterial density was evaluated by the most probable number (MPN) method utilizing N-free semi-solid media with varied compositions (JNFb, NFb, LGI and Fam). Individual isolates were characterized by colony and... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Burkholderia sp.; Enterobacter sp.; Serratia sp.; Bacillus sp.; Klebsiella sp.. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000500002 |
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