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Morphological properties and levels of extracellular peroxidase activity and light emission of the basidiomycete Armillaria borealis treated with beta-glucosidase and chitinase / O. A. Mogilnaya [et al.] // Mycosphere. - 2017. - Vol. 8, Is. 4. - P649-+, DOI 10.5943/mycosphere/8/4/11. - Cited References:39. - This work was supported by the state budget allocated to the fundamental research at the Russian Academy of Sciences (project no. 0356-2016-0709) and Program No. II. 2 "Integration and Development" of the Siberian Branch of the Russian Academy of Sciences (project no. 0356-2015-0103). . - ISSN 2077-7000

РУБ Mycology
Рубрики:
FUNGAL CELL-WALL
OXIDATIVE STRESS
PHANEROCHAETE-CHRYSOSPORIUM
Кл.слова (ненормированные):
basidiomycetes -- bioluminescence -- cell wall -- beta-glucosidase -- chitinase -- peroxidase
Аннотация: The study estimates morphological properties and levels of extracellular peroxidase activity and light emission of mycelium of the basidiomycete Armillaria borealis IBSO 2328 treated with beta-glucosidase and chitinase. Mycelium incubated with the enzymes shows considerable morphological changes and indications of osmotic shock. Injuries observed in the cell envelope of the fungal hyphae are primarily attributed to the partial (in the beta-glucosidase treatment) or complete (in the chitinase treatment) disintegration of the melanin layer on the surface of the cell wall. Changes in the cell wall of hyphae are accompanied by release of extracellular peroxidases of the fungus into the incubation medium and an increase in light emission relative to the luminescence of the control pellets. We assume that higher level of luminescence of the enzyme-treated mycelium samples could be related to the disintegration of the surface pigment layer of the hyphae and the partial loss of extracellular peroxidases. The data obtained confirm the previously proposed hypothesis in which light producing reaction of the fungus may be an additional way to neutralize active oxygen radicals under stress.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Biophys, Fed Res Ctr Krasnoyarsk Sci Ctr SB RAS, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Mogilnaya, O. A.; Ronzhin, N. O.; Artemenko, K. S.; Bondar, V. S.; Russian Academy of Sciences [0356-2016-0709, 0356-2015-0103]

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Creation of Bifunctional Indicating Complex Based on Nanodiamonds and Extracellular Oxidases of Luminous Fungus Neonothopanus nambi / O. A. Mogilnaya [et al.] // Dokl. Biochem. Biophys. - 2018. - Vol. 480, Is. 1. - P135-138, DOI 10.1134/S160767291803002X. - Cited References:13 . - ISSN 1607-6729. - ISSN 1608-3091

РУБ Biochemistry & Molecular Biology + Biophysics
Рубрики:
PHANEROCHAETE-CHRYSOSPORIUM
NANOPARTICLES
Аннотация: A bifunctional indicating complex was created by immobilization of extracellular oxidases (glucose oxidase and peroxidases) of luminous fungus Neonothopanus nambi onto modified nanodiamonds (MNDs) synthesized by detonation. It was found that the enzymes firmly adsorb onto MND particles and exhibit their catalytic activity. Model in vitro experiments showed that the created MND-enzymes complex is suitable for repeated use for analyte (glucose and phenol) testing and retains its activity after storage at 4 degrees C in deionized water for 1 month. The data obtained offer the prospects for developing a new class of reusable multifunctional indicating and diagnostic test systems on the basis of MNDs and higher fungal enzymes for medical and ecological analytics.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Inst Biophys, Krasnoyarsk, Russia.

Доп.точки доступа:
Mogilnaya, O. A.; Ronzhin, N. O.; Artemenko, K. S.; Bondar, V. S.

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