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| Jesus,Priscila Barreto de; Pestana,Edilene Maria dos Santos; Affe,Helen Michelle de Jesus; Rocha,Diogo Souza Bezerra; Caires,Taiara Aguiar; Nunes,José Marcos de Castro; Schnadelbach,Alessandra Selbach. |
| ABSTRACT Hypnea pseudomusciformis was recently described from South America, and has three morphological variants: “musciformis”, “nigrescens”, and “valentiae”. Information on the biology of these variants may help to explain this species’ wide morphological variation despite the absence of genetic divergence among variants. More morphological and ecological data has accumulated on the “musciformis” variant occurring on the Brazilian coast than for the others. In this study, we described the reproductive morphology of a tropical “nigrescens” population and investigated its phenology to provide crucial biological information about this taxon, and perhaps also assist in answering questions about the systematics of H. pseudomusciformis variants. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biomass; Cystocloniaceae; Ecology; Hypnea musciformis complex; Reproduction; Systematics. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000100067 |
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| Paulo,Elinalva Maciel; Vasconcelos,Murilo Pinho; Oliveira,Ivelise Santiago; Affe,Helen Michelle de Jesus; Nascimento,Rosely; Melo,Itamar Soares de; Roque,Milton Ricardo de Abreu; Assis,Sandra Aparecida de. |
| The accumulation of exopolysaccharides (EPS) produced by microorganisms occurs in the presence of excess substrate and limiting conditions of elements that are essential to growth, such as nitrogen, phosphorus, sulfur, and magnesium. The presence of EPS produced by bacterial cells contributes to slime colonies formation in solid medium and increased viscosity in liquid medium. This paper proposes an alternative method for screening EPS-producing lactic acid bacteria using solid medium-containing discs of filter paper that are saturated with active cultures. The screening was carried out under different culture conditions varying the type of sugar, pH, and temperature. EPS production was visualized by the presence of mucoid colonies on the discs, which was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Screening; Exopolysaccharides; Lactic acid bacteria. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612012000400011 |
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