Copper improves the production of laccase by the white-rot fungus Pleurotus pulmonarius in solid state fermentation

Tychanowicz, Giovana Kirst; Souza, Daniela Farani de; Souza, Cristina Giatti Marques de; Kadowaki, Marina Kimiko; Peralta, Rosane Marina

doi:10.1590/s1516-89132006000600002

Cited by 52 publications

(34 citation statements)

References 19 publications

(16 reference statements)

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“…A stimulatory effect of Zn on laccase activity, noted in P. ostreatus HAI 494, was also demonstrated in Trametes versicolor and T. hirsuta (Collins and Dobson 1997;Keum and Li 2004), while in P. pulmonarius HAI 572 and other tested strains, as well as in T. pubescens this element reduced the activity (Galhaup and Haltrich 2001;Tychanowicz et al 2006), which could be explained by species specificity. Laccase induction could be the result of limited selectivity of the metal-responsive promoter in the laccase gene in P. ostreatus, in which transcription can be controlled by several metal ions, including Zn (Faraco et al 2003).…”

Section: Effect Of Trace Elements On Laccase Activitymentioning

confidence: 73%

Influence of Trace Elements on Ligninolytic Enzyme Activity of Pleurotus ostreatus and P. pulmonarius

et al. 2013

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Trace elements, at tolerable concentrations, are either part of the active site or act as an activity modulator of ligninolytic enzymes of white-rot mushrooms. They are usually in plant raw materials in a non-toxic amount or non-available and extractable forms. This study evaluated the effects of Fe, Zn, and Se on the activity of laccase and Mn-oxidizing peroxidases of P. ostreatus and P. pulmonarius during solid-state fermentation of grapevine sawdust. The studied species showed different levels of tolerance to the trace elements. A stimulatory effect of the microelements on laccase activity was demonstrated in P. ostreatus, while Fe and Zn were strong inhibitors of the activity of P. pulmonarius, which was contrary to Se, independent of the cultivation period. With the exception of SeO 2 , activity of Mn-oxidizing peroxidases in P. ostreatus was suppressed in various levels by the elements. However, in P. pulmonarius, activity against phenol red oxidation in the presence of external Mn 2+ was stimulated by the elements on day 7, while on day 10, activity inhibition by Fe and Zn and stimulation by Se was noted. The effect on activity against phenol red oxidation in the absence of external Mn 2+ was the opposite.

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Section: Effect Of Trace Elements On Laccase Activitymentioning

confidence: 73%

Influence of Trace Elements on Ligninolytic Enzyme Activity of Pleurotus ostreatus and P. pulmonarius

et al. 2013

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“…However, Pleurotus pulmonarius and Lentinula edodes SR-1 have been reported to produce only exracellular laccase to decolorize dyes of different spectra without any mediators (Nagai et al 2002). MnP mediated decolorization of azo dyes Direct Blue 15, Direct Green 6, and Congo red by Phanerochaete chrysosporium can be enhanced by the addition of Tween-80 (Ü rek and copper (Tychanowicz et al 2006).Whereas, LiP produced by Trametes versicolor can decolorize Remazol Brilliant Blue R (RBBR) in the presence as well as in the absence of VA (Christian et al 2005). The decolorization ability of WRF can be substantially increased by carefully optimizing the operational conditions such as initial dye concentration, nutrient content of the media, age of fungus and carbon and nitrogen sources (Ozsoy et al 2005;Nilsson et al 2006;Sanghi et al 2006).…”

Section: Biodegradation Of Bleach Plant Effluentsmentioning

confidence: 99%

Recent developments in biodegradation of industrial pollutants by white rot fungi and their enzyme system

et al. 2008

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Increasing discharge and improper management of liquid and solid industrial wastes have created a great concern among industrialists and the scientific community over their economic treatment and safe disposal. White rot fungi (WRF) are versatile and robust organisms having enormous potential for oxidative bioremediation of a variety of toxic chemical pollutants due to high tolerance to toxic substances in the environment. WRF are capable of mineralizing a wide variety of toxic xenobiotics due to non-specific nature of their extracellular lignin mineralizing enzymes (LMEs). In recent years, a lot of work has been done on the development and optimization of bioremediation processes using WRF, with emphasis on the study of their enzyme systems involved in biodegradation of industrial pollutants. Many new strains have been identified and their LMEs isolated, purified and characterized. In this review, we have tried to cover the latest developments on enzyme systems of WRF, their low molecular mass mediators and their potential use for bioremediation of industrial pollutants.

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“…The data obtained in this work showed that laccase was the main ligninolytic enzyme produced by P. pulmonarius in submerged cultures, considering that low Mn peroxidase activities and no lignin peroxidase were detected in the culture filtrates. In the genus Pleurotus, laccases are constitutively produced in small amounts; however, their production can be considerably enhanced by a wide variety of substances, mainly aromatic or phenolic compounds related to lignin or lignin derivatives, such as ferulic acid, 2,5 xylidine, p-anisidine or veratryl alcohol (Leonowicz et al, 2001;Souza et al, 2004;Tychanowicz et al, 2006) In this work, the supplementation of submerged cultures with corn cob extract had a very pronounced effect on the laccase activity in P. pulmonarius. The laccase inducer effect of the soluble plant extract is considered to be related to its phenolic content.…”

Section: Discussionmentioning

confidence: 99%

Pentachlorophenol removal by Pleurotus pulmonarius in submerged cultures

Souza

Costa

Madrona

et al. 2011

Braz. arch. biol. technol.

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Pentachlorophenol (PCP) removal by Pleurotus pulmonarius grown in submerged cultures in the presence and absence of laccase inducers was studied in this work. When PCP was added to a final concentration of 25 mg·L -1 in submerged cultures actively producing laccase, 70% of the PCP was removed after 96 h. The removal of PCP was less than 20% in the cultures with low laccase activity. The results suggested that laccase played an important role in the biodegradation of PCP by P. pulmonarius and that for bioremediation purposes the fungus must be cultured under the conditions of active laccase production.

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Copper improves the production of laccase by the white-rot fungus Pleurotus pulmonarius in solid state fermentation

Abstract: Pleurotus pulmonarius (Fr)

Cited by 52 publications

References 19 publications

Influence of Trace Elements on Ligninolytic Enzyme Activity of Pleurotus ostreatus and P. pulmonarius

Influence of Trace Elements on Ligninolytic Enzyme Activity of Pleurotus ostreatus and P. pulmonarius

Recent developments in biodegradation of industrial pollutants by white rot fungi and their enzyme system

Pentachlorophenol removal by Pleurotus pulmonarius in submerged cultures

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