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Fusconi,Roberta; Godinho,Mirna Januária Leal. |
The microbial populations of groundwaters were analyzed in a region under the influence of a landfill (piezometer L12) in the town of São Carlos, São Paulo, Brazil, and in an area not influenced by the landfill (piezometer L5). Heterotrophic bacteria were counted by spread plate method and the number of protozoa was estimated by the most probable number method. There was a larger number of organisms in well L12, with a mean value of 15.76 x 104 CFU/ml for bacteria and 9.7 MPN/ml for protozoa, whereas the mean values for piezometer L5 were 2.88 x 104 CFU/ml for bacteria and 3.4 MPN/ml for protozoa. The greater abundance detected in piezometer L12 may be related to the influence of the leachate through the landfill on the microbial populations, also... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacteria; Protozoa; Groundwater; Landfill. |
Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000300003 |
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Fusconi,Roberta; Godinho,Mirna Januária Leal; Hernández,Isara Lourdes Cruz; Bossolan,Nelma Regina Segnini. |
A strain of Gordonia sp. (strain Lc), from landfill leachate-contaminated groundwater was characterized by polyphasic taxonomy and studied for exopolysaccharide (EPS) production. The cells were Gram-positive, catalase-positive, oxidase-negative and non-motile. The organism grew both aerobically and, in anoxic environment, in the presence of NaNO3. Rods occured singly, in pairs or in a typical coryneform V-shaped. The organism had morphological, physiological and chemical properties consistent with its assignment to the genus Gordonia and mycolic and fatty acid pattern that corresponded to those of G. polyisoprenivorans DSM 44302T. The comparison of the sequence of the first 500 bases of the 16S rDNA of strain Lc gave 100% similarity with the type strain of... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gordonia polyisoprenivorans; Exopolysaccharide; Groundwater; Landfill. |
Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000200014 |
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