Pectin Lyase
Mostrando 1-12 de 66 artigos, teses e dissertações.
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1. exoenzymes as a pathogenicity factor for Colletotrichum gloeosporioides associated with coffee plants
RESUMO Fungos fitopatogênicos durante o processo de penetração e colonização são capazes de secretar uma variedade de enzimas, as quais os tornam capazes de infectar o tecido vivo do hospedeiro, atuando na degradação de ceras, cutícula e das paredes celulares. A capacidade de um agente patogênico em produzir ou não enzimas pode determinar o grau d
Summa phytopathol.. Publicado em: 17/01/2020
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2. Pectin lyase overproduction by Penicillium griseoroseum mutants resistant to catabolite repression
Abstract Expression of pectinolytic genes is regulated by catabolic repression limiting the production of pectin lyase (PL) if the natural inducer, pectin, is missing from the growth medium. Here, we report the isolation of Penicillium griseoroseum mutants resistant to 2-deoxy-d-glucose (DG) that show resistance to catabolite repression and overproduce PL. T
Braz. J. Microbiol.. Publicado em: 2017-07
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3. Caracterização de linhagens recombinantes de Penicillium griseoroseum: análise do cariótipo, da expressão dos genes plg 1 e pgg 2 e da produção de pectina liase e poligalacturonase em resposta ao pH do meio / Characterization of recombinant strains of Penicillium griseoroseum: karyotype analysis, expression of plg1 and pgg2 genes and production of pectin lyase and polygacturonase in response to medium pH
Os estudos genéticos e fisiológicos realizados com o isolado Penicillium griseoroseum CCT6421 ressaltam as vantagens para a sua aplicação como hospedeiro para produção de proteínas. A obtenção e análise de linhagens recombinantes de P. griseoroseum com alta produção de pectina liase (PL) e poligalacturonase (PG) evidenciaram o eficiente sistema d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/05/2011
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4. Screening and optimization of pectin lyase and polygalacturonase activity from ginseng pathogen Cylindrocarpon Destructans
Cylindrocarpon destructans isolated from ginseng field was found to produce pectinolytic enzymes. A Taguchi's orthogonal array experimental design was applied to optimize the preliminary production of polygalacturonase (PG) and pectin lyase (PL) using submerged culture condition. This method was applied to evaluate the significant parameters for the producti
Brazilian Journal of Microbiology. Publicado em: 2011-06
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5. Biotechnological potential of alternative carbon sources for production of pectinases by Rhizopus microsporus var. rhizopodiformis
Fungi collected from Brazilian soil and decomposing plants were screened for pectinase production. R. microsporus var. rhizopodiformis was the best producer and was selected to evaluate the pectic enzyme production under several nutritional and environmental conditions. The pectinase production was studied at 40ºC, under 28 carbon sources-supplemented mediu
Brazilian Archives of Biology and Technology. Publicado em: 2011-02
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6. Obtenção e caracterização de linhagens recombinantes de Penicillium griseoroseum com alta produção de pectina liase e poligalacturonase / Obtainment and characterizing of recombinant strains of Penicillium griseoroseum with pectin lyase and polygalacturonase overproduction
Penicillium griseoroseum has been described as a promising species for polygalacturonase (PG) and pectin lyase (PL) production. However, the genes encoding these enzymes in this organism require induction by pectin and are repressed by glucose. One strategy to increase the expression of these genes is the replacement of original promoter by a strong constitu
Publicado em: 2007
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7. Regulation of the expression of the gene plg1 that code for pectin lyase in Penicillium griseoroseum / Regulação da expressão do gene plg1 que codifica pectina liase em Penicillium griseoroseum
Penicillium griseoroseum has been considered a promising species for industrial application because of its capacity to produce pectin lyase (PL) and polygalacturonase. When P. griseoroeum is grown in the presence of glucose, plg1 gene transcripts are detected at low levels, evidencing the effects of catabolic repression. However, in the absence of the natura
Publicado em: 2006
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8. Isolamento, caracterização e regulação de genes que codificam pectato liase em Crinipellis perniciosa, agente etiológico da vassoura-de-bruxa do cacaueiro (Theobroma cacao) / Isolation, characterization and regulation of genes encoding pectate lyase in Crinipellis perniciosa, etiological agent of the witches broom in cocoa (Theobroma cacao)
In this work, genes encoding the pectinolytic enzyme pectate lyase were isolated from the genome of the fungus Crinipellis perniciosa, etiological agent of the witches broom disease of cocoa. Pectinolytic enzymes have been correlated with the pathogenicity of some phytopathogenic fungi. Preliminary database searches of the Genome Project Witches broom, revea
Publicado em: 2006
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9. Digestive and energy metabolism enzymes from pyrethroid resistant and susceptible populations of maize weevil / Enzimas de metabolismo energético e digestivo em populações de caruncho-do-milho resistentes e susceptível a piretróides
Studies on Sitophilus zeamais populations of distinct insecticide susceptibility suggest higher efficiency in mobilizing energy in some resistant populations, making possible the production of their defense apparatus against insecticide, without impairing their reproductive performance. This efficiency can be the result of a high carbohydrates and proteins a
Publicado em: 2006
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10. Organization of pectin lyase encoding gene from Penicillium expansum and isolation of recombinant strains of Penicillium griseoroseum with high pectin lyase production / Organização do gene de pectina liase em Penicillium expansum e obtenção de linhagens recombinantes de Penicillium griseoroseum com alta produção de pectina liase
A seqüência de nucleotídeos contendo o gene ple1 que codifica pectina liase em Penicillium expansum foi clonada. Esta seqüência contém 874 nucleotídeos da região promotora, 1342 nucleotídeos da região codificadora e 469 nucleotídeos da região terminadora. A região codificadora do gene ple1 é interrompida por dois íntrons, de 101 e 116 nucleot�
Publicado em: 2004
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11. Produção e caracterização de aromas de frutas por microrganismos pectinoliticos utilizando-se residuos agroindustriais. / Production and characterization of fruits flavor for pectinolytic microorganisms using agro-industrial residues.
Pectinases were some of the first enzymes used in commercial applications of wines and fruit juices since 1930 and their use has increased considerably, specially in food, brewery and wine, textile, pulp and paper industries. Today, these enzymes account for approximately 20% of the world enzyme market. Plants, fungi, yeasts, and bacteria naturally produce t
Publicado em: 2003
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12. Microbiology of Wetwood: Importance of Pectin Degradation and Clostridium Species in Living Trees
Wetwood samples from standing trees of eastern cottonwood (Populus deltoides), black poplar (Populus nigra), and American elm (Ulmus americana) contained high numbers of aerobic and anaerobic pectin-degrading bacteria (104 to 106 cells per g of wood). High activity of polygalacturonate lyase (≤0.5 U/ml) was also detected in the fetid liquid that spurted fr