Increasing ligninolytic enzyme activities in several white-rot Basidiomycetes by nitrogen-sufficient media

Kaal, Erwin E. J.; Field, Jim A.; Joyce, T. W.

doi:10.1016/0960-8524(95)00066-n

Cited by 173 publications

(99 citation statements)

References 47 publications

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“…The decrease in activity with increasing incubation time was possibly by the production of co-products or depletion of nutrients, thus inhibiting fungal growth and enzyme formation (Gupta et al, 2010). Previous studies have shown that organic sources greatly improved the production of enzymes (Dong et al, 2005) by P. ostreatus (Mikiashvili et al, 2006) as well as fungi L. edodes, P. chrysosporium in the activity of MnP (Kaal et al, 1995). Li et al (2008) noted that the use of solid state fermentation of the enzymatic activities produced MnP (9.67 UI.L -1 ) as compared to the liquid fermentation (0.044 UI.L -1 ) especially with agroindustrial residues, which allows the concentrated product (Liu et al, 2011).…”

Section: Treatments Daysmentioning

confidence: 99%

Influence of nitrogen sources on the enzymatic activity and grown by Lentinula edodes in biomass Eucalyptus benthamii

et al. 2015

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Lignocellulose is the most abundant environmental component and a renewable organic resource in soil. There are some filamentous fungi which developed the ability to break down and use cellulose, hemicellulose and lignin as an energy source. The objective of this research was to analyze the effect of three nitrogen resources (ammonium sulfate, saltpetre, soybean) in the holocellulolitic activity of Lentinula edodes EF 50 using as substrate sawdust E. benthamii. An experimental design mixture was applied with repetition in the central point consisting of seven treatments (T) of equal concentrations of nitrogen in ammonium sulfate, potassium nitrate and soybean. The enzymatic activity of avicelase, carboxymetilcellulase, β-glucosidase, xylanases and manganese peroxidase was determined. The humidity, pH, water activity (a w ) and qualitative analysis of mycelial growth in 8 times of cultivation were evaluated. The results showed negative effect on enzyme production in treatments with maximum concentration of ammonium sulfate and potassium nitrate. The treatments with cooked soybean flour expressed higher enzymatic activities in times of 3, 6 and 9 days of culture, except in the activity of manganese peroxidase. The highest production was observed in the treatment with ammonium sulfate, and soybean (83.86 UI.L -1 ) at 20 days of cultivation.

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Section: Treatments Daysmentioning

confidence: 99%

Influence of nitrogen sources on the enzymatic activity and grown by Lentinula edodes in biomass Eucalyptus benthamii

et al. 2015

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“…Apart from Mn regulation, MnP stimulation depends on nitrogen-limitation in most cases; when vegetative growth comes to an end and secondary metabolism begins, the fungi need to continue to mineralize lignin due to nutrient depletion (Buswell, 1991). Although this has been the generally accepted model, this pattern is not followed by all the fungi (Kaal et al, 1995). MnP was not significantly stimulated by DOR or by GPS.…”

Section: Discussionmentioning

confidence: 96%

Integrated biovalorization of wine and olive mill by-products to produce enzymes of industrial interest and soil amendments

Reina¹,

Ullrich

García-Romera³

et al. 2016

Span. j. agric. res.

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An integral and affordable strategy for the simultaneous production of lignin-modifying and carbohydrate active enzymes and organic amendment, with the aid of a saprobe fungus was developed by using olive oil and wine extraction by-products. The polyporal fungus Trametes versicolor was cultivated in soy or barley media supplemented with dry olive mill residue (DOR) as well as with grape pomace and stalks (GPS) in solid state fermentation (SSF). This strategy led to a 4-fold increase in the activity of laccase, the principal enzyme produced by SFF, in DOR-soy media as compared to controls. T. versicolor managed to secrete lignin-modifying enzymes in GPS, although no stimulative effect was observed. GPS-barley media turned out to be the appropriate medium to elicit most of the carbohydrate active enzymes. The reuse of exhausted solid by-products as amendments after fermentation was also investigated. The water soluble compound polymerization profile of fermented residues was found to correlate with the effect of phytotoxic depletion. The incubation of DOR and GPS with T. versicolor not only reduced its phytotoxicity but also stimulated the plant growth. This study provides a basis for understanding the stimulation and repression of two groups of enzymes of industrial interest in the presence of different carbon and nitrogen sources from by-products, possible enzyme recovery and the final reuse as soil amendments.

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“…Contrariamente, Bjerkandera spp., Lentinula edodes (Berkeley) Pegler e Pleurotus ostreatus (Jacquin: Fr.) Krummer têm seus complexos enzimáticos estimulados por relações C/N mais baixas (KAAL et al, 1995). Outro motivo que pode ter contribuído para as variações encontradas entre os isolados em resposta à alteração da relação C/N é o fato de que a degradação da madeira por microrganismos depende não só da quantidade de carbono e nitrogênio lábeis, mas também do processo predominante no momento, ou seja, respiração ou mineralização da matéria orgânica (VANCE e CHAPIN III, 2001).…”

Section: Figure 1 -Percentage Of Dry Matter Weight Loss Caused By Whiunclassified

“…A relação C/N igual a 60 : 1 em geral favoreceu a degradação, o que pode ser devido à maior produção enzimática e ao maior crescimento dos fungos causadores de podridão-branca nos cavacos com tal relação carbono/ nitrogênio. A atividade de enzimas lignolíticas pode ser estimulada com o uso de meios de cultura onde não ocorra carência de nitrogênio (HIGHLEY et al, 1994;KAAL et al, 1995).…”

Section: Figure 1 -Percentage Of Dry Matter Weight Loss Caused By Whiunclassified

Isolamento e seleção de fungos causadores da podridão-branca da madeira em florestas de Eucalyptus spp. com potencial de degradação de cepas e raízes

Alonso

Silva

Kasuya³

et al. 2007

Rev. Árvore

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RESUMO -Este trabalho objetivou isolar fungos causadores da podridão-branca da madeira, a partir de basidiocarpos e de fragmentos de madeira de eucalipto coletados em várias regiões do país, bem como testar seu potencial de degradação de cepas e raízes mortas em plantios comerciais de eucalipto, após o corte raso. Para o isolamento dos fungos foi desenvolvido um meio de cultura de serragem de eucalipto-ágar. Dentre 292 isolados obtidos e submetidos ao teste de Bavendamm, 144 foram classificados como causadores de podridão-branca, capazes de produzir fenoloxidases. Dentre as nove relações C/N testadas, observou-se uma tendência de ocorrer maior degradação de cavacos naquelas iguais a 60 : 1, 200 : 1 e 300 : 1. Utilizando a relação C/N igual a 60 : 1, realizaram-se dois experimentos para avaliar a degradação de cavacos de Eucalyptus saligna por isolados fúngicos de podridão-branca. No primeiro experimento, avaliado aos 90 dias de incubação, foram selecionados sete isolados, que causaram perda de peso em cavacos superior ou igual à causada por Trametes versicolor, usado para comparação. No segundo experimento foram testados 46 isolados fúngicos. Dentre os mais eficientes estavam os sete isolados selecionados no primeiro teste, além de outros quatro isolados. Baseado na análise de DNA, seis isolados foram identificados, sendo três pertencentes à espécie Pycnoporus sanguineus, um ao gênero Peniophora sp., um ao gênero Pestalotiopsis sp. e um ao gênero Ganoderma sp.Palavras chave: Destoca microbiológica, Eucalyptus e fungos da podridão-branca da madeira ISOLATION AND SCREENING OF WOOD WHITE ROT FUNGI FROM Eucalyptus spp. FORESTS WITH POTENTIAL FOR USE IN DEGRADATION OF STUMPS AND ROOTS ABSTRACT -The aim of this work was to isolate native wood white-rot fungi from fungal fruit-bodies and eucalyptus wood fragments from different regions of Brazil and to test their potential for degrading dead stumps and roots in

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Increasing ligninolytic enzyme activities in several white-rot Basidiomycetes by nitrogen-sufficient media

Cited by 173 publications

References 47 publications

Influence of nitrogen sources on the enzymatic activity and grown by Lentinula edodes in biomass Eucalyptus benthamii

Influence of nitrogen sources on the enzymatic activity and grown by Lentinula edodes in biomass Eucalyptus benthamii

Integrated biovalorization of wine and olive mill by-products to produce enzymes of industrial interest and soil amendments

Isolamento e seleção de fungos causadores da podridão-branca da madeira em florestas de Eucalyptus spp. com potencial de degradação de cepas e raízes

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