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Microorganisms 2017, 5(4), 73; doi:10.3390/microorganisms5040073

Physiological Peculiarities of Lignin-Modifying Enzyme Production by the White-Rot Basidiomycete Coriolopsis gallica Strain BCC 142

1
Agricultural University of Georgia, 240 David Agmashenebeli Alley, 0159 Tbilisi, Georgia
2
Battelle Memorial Institute, 505 King Ave, Columbus, OH 43212, USA
*
Author to whom correspondence should be addressed.
Received: 19 September 2017 / Revised: 9 November 2017 / Accepted: 16 November 2017 / Published: 17 November 2017
(This article belongs to the Special Issue Filamentous Fungi in White Biotechnology)
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Abstract

Sixteen white-rot Basidiomycota isolates were screened for production of lignin-modifying enzymes (LME) in glycerol- and mandarin peel-containing media. In the synthetic medium, Cerrena unicolor strains were the only high laccase (Lac) (3.2–9.4 U/mL) and manganese peroxidase (MnP) (0.56–1.64 U/mL) producers while one isolate Coriolopsis gallica was the only lignin peroxidase (LiP) (0.07 U/mL) producer. Addition of mandarin peels to the synthetic medium promoted Lac production either due to an increase in fungal biomass (Funalia trogii, Trametes hirsuta, and T. versicolor) or enhancement of enzyme production (C. unicolor, Merulius tremellosus, Phlebia radiata, Trametes ochracea). Mandarin peels favored enhanced MnP and LiP secretion by the majority of the tested fungi. The ability of LiP activity production by C. gallica, C. unicolor, F. trogii, T. ochracea, and T. zonatus in the medium containing mandarin-peels was reported for the first time. Several factors, such as supplementation of the nutrient medium with a variety of lignocellulosic materials, nitrogen source or surfactant (Tween 80, Triton X-100) significantly influenced production of LME by a novel strain of C. gallica. Moreover, C. gallica was found to be a promising LME producer with a potential for an easy scale up cultivation in a bioreactor and high enzyme yields (Lac-9.4 U/mL, MnP-0.31 U/mL, LiP-0.45 U/mL). View Full-Text
Keywords: Coriolopsis gallica; white-rot basidiomycetes; lignin-modifying enzymes; production; optimization; submerged fermentation Coriolopsis gallica; white-rot basidiomycetes; lignin-modifying enzymes; production; optimization; submerged fermentation
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MDPI and ACS Style

Elisashvili, V.; Kachlishvili, E.; Asatiani, M.D.; Darlington, R.; Kucharzyk, K.H. Physiological Peculiarities of Lignin-Modifying Enzyme Production by the White-Rot Basidiomycete Coriolopsis gallica Strain BCC 142. Microorganisms 2017, 5, 73.

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