Consulta: creatorFacets:"Durrer,Ademir"
Registros recuperados: 4
Data/hora: 09/06/2024 04:44:12

Composição diferencial das comunidades bacterianas na rizosfera de variedas de cana-de-açúcar
Provedor de dados: Revista Brasileira de Ciência do Solo
Autores: Costa,Diogo Paes da; Dias,Armando Cavalcante Franco; Durrer,Ademir; Andrade,Pedro Avelino Maia de; Gumiere,Thiago; Andreote,Fernando Dini.
A cultura da cana-de-açúcar é de extrema importância no cenário agrícola nacional. No entanto, pouco se sabe sobre a estruturação das comunidades microbianas associadas aos solos e às rizosferas de tais plantas. O objetivo deste trabalho foi avaliar a estrutura e diversidade das comunidades de bactérias associadas ao solo e à rizosfera de seis variedades de cana-de-açúcar cultivadas no Estado de São Paulo (Brasil). As análises foram realizadas com base em métodos independentes de cultivo, em que a técnica de PCR-DGGE revelou alterações na rizosfera para os grupos de bactérias totais e também para os grupos de Alphaproteobacteria e Betaproteobacteria. Após essa análise, quatro amostras (três de rizosfera e uma de solo) foram usadas para o sequenciamento da...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Métodos independentes de cultivo; Genes ribossomais; Diversidade bacteriana; Sequenciamento de DNA.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000600004

Exploring interactions of plant microbiomes
Provedor de dados: Scientia Agricola
Autores: Andreote,Fernando Dini; Gumiere,Thiago; Durrer,Ademir.
A plethora of microbial cells is present in every gram of soil, and microbes are found extensively in plant and animal tissues. The mechanisms governed by microorganisms in the regulation of physiological processes of their hosts have been extensively studied in the light of recent findings on microbiomes. In plants, the components of these microbiomes may form distinct communities, such as those inhabiting the plant rhizosphere, the endosphere and the phyllosphere. In each of these niches, the "microbial tissue" is established by, and responds to, specific selective pressures. Although there is no clear picture of the overall role of the plant microbiome, there is substantial evidence that these communities are involved in disease control, enhance...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbial communities; Rhizosphere; Endophytes; Phyllosphere.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000600013

Concentration, characterization and application of lipases from Sporidiobolus pararoseus strain
Provedor de dados: Brazilian Journal of Microbiology
Autores: Smaniotto,Alessandra; Skovronski,Aline; Rigo,Elisandra; Tsai,Siu Mui; Durrer,Ademir; Foltran,Lillian Liva; Paroul,Natália; Luccio,Marco Di; Oliveira,J. Vladimir; Oliveira,Débora de; Treichel,Helen.
Lipases produced by a newly isolated Sporidiobolus pararoseus strain have potential catalytic ability for esterification reactions. After production, the enzymatic extracts (conventional crude and precipitated, 'CC' and 'CP', and industrial crude and precipitated, 'IC' e 'IP') were partially characterized. The enzymes presented, in general, higher specificity for short chain alcohols and fatty acids. The precipitated extract showed a good thermal stability, higher than that for crude enzymatic extracts. The 'CC' and 'CP' enzymes presented high activities after exposure to pH 6.5 and 40 ºC. On the other hand, the 'IC' and 'IP' extracts kept their activities in a wide range of pH memory but presented preference for higher reaction temperatures. Preliminary...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sporidiobolus pararoseus; 'synthetic lipase'; Submerged fermentation; Enzyme characterization.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000100043

'Synthetic lipase' production from a newly isolated Sporidiobolus pararoseus strain by submerged fermentation
Provedor de dados: Brazilian Journal of Microbiology
Autores: Smaniotto,Alessandra; Skovronski,Aline; Rigo,Elisandra; Tsai,Siu Mui; Durrer,Ademir; Foltran,Lillian Liva; Di Luccio,Marco; Oliveira,J. Vladimir; Oliveira,Débora de; Treichel,Helen.
The lipase produced by a newly isolate Sporidiobolus pararoseus strain has potential catalysis ability for esterification reactions. In order to improve its synthetic activity, this work aimed at optimizing 'synthetic lipase' production by submerged fermentation of a conventional media based on peptone, yeast extract, NaCl and olive oil using experimental design technique. According to the results obtained in the first experimental design (2(4-1)), yeast extract and NaCl concentrations were tested to further optimization by response surface methodology. The maximum 'synthetic lipase' activity obtained was 26.9 U/mL in the optimized media (5.0, 6.8, 7.0 and 1.0% (wt/v) of peptone, yeast extract, NaCl and olive oil, respectively), representing a 6.36-fold...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sporidiobolus pararoseus; Experimental design; 'synthetic lipase'; Submerged fermentation.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400033