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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bondar V.S., Rodicheva E.K., Medvedeva S.E., Tyulkova N.A., Tyaglik A.B., Shpak B.A., Gitelson J.I.
Заглавие : On the mechanism of luminescence of the fungus Neonothopanus nambi
Место публикации : Doklady Biochemistry and Biophysics. - 2013. - Vol. 449, Is. 1. - С. 80-83. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672913020075
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gitelson J.I., Bondar V.S., Medvedeva S.E., Rodicheva E.K., Vydryakova G.A.
Заглавие : Chemiluminescent emission of tissues of fruit bodies of higher fungi
Место публикации : Doklady Biochemistry and Biophysics. - 2012. - Vol. 443, Is. 1. - С. 105-108. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672912020123
Ключевые слова (''Своб.индексиров.''): agaricales--article--chemistry--fungus--light--luminescence--physiology--russian federation--agaricales--fungi--light--luminescent measurements--siberia--fungi
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bondar V.S., Puzyr A.P., Purtov K.V., Medvedeva S.E., Rodicheva E.K., Gitelson J.I.
Заглавие : The luminescent system of the luminous fungus Neonothopanus nambi
Место публикации : Doklady Biochemistry and Biophysics. - 2011. - Vol. 438, Is. 1. - С. 138-140. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672911030082
Ключевые слова (''Своб.индексиров.''): agaricales--article--chemistry--luminescence--agaricales--luminescence--fungi--neonothopanus nambi
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Illarrionov B.A., Blinov V.M., Douchenko A.P., Protopopova M.V., Karginov V.A., Mertvetsov N.P., Gitelson J.I.
Заглавие : Isolation of bioluminescent functions from Photobacterium leiognathi: analysis of luxA, luxB, luxG and neighboring genes
Место публикации : Gene. - 1990. - Vol. 86, Is. 1. - С. 89-94. - ISSN 03781119 (ISSN)
Ключевые слова (''Своб.индексиров.''): bioluminescence--expression in e. coli--luciferase--molecular evolution--nucleotide sequence--protein alignment--recombinant dna--luciferase--amino acid sequence--article--bioluminescence--fungus--gene structure--genetic engineering--heredity--nonhuman--nucleotide sequence--priority journal--vibrionaceae--acyltransferases--amino acid sequence--bacterial proteins--base sequence--cloning, molecular--dna, bacterial--genes, structural, bacterial--luciferase--luminescence--molecular sequence data--operon--photobacterium--restriction mapping--escherichia coli--fungi--photobacterium leiognathi--vibrio harveyi--vibrionaceae
Аннотация: Genes encoding luminescence of Photobacterium leiognathi have been cloned in Escherichia coli. The luminescent clones were readily apparent. Among them, a clone containing a recombinant plasmid with a 13.5-kb insertion was identified. This DNA fragment contained all of the luminescence-encoding genes. The luciferase-encoding genes (lux) in this DNA fragment were localized. We have sequenced a part of the cloned lux region and identified the luxA, luxB and luxG genes encoding the ? and ? subunits of luciferase and a ? protein with an Mr of 26 180, respectively. The analysis of deduced amino acid sequences and comparison with known luciferase sequences from Vibrio harveyi, indicate the common origin of these proteins. В© 1990.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Furyaeva A.V., Shevchenko V.T., Pechurkin N.S.
Заглавие : The effect of temperature on the growth kinetics of Candida tropicalis 29-10 continuously cultivated in the pH-stat at different growth-limiting conditions
Место публикации : Prikladnaya Biokhimiya i Mikrobiologiya. - 1986. - Vol. 22, Is. 2. - С. 243-247. - ISSN 05551099 (ISSN)
Ключевые слова (''Своб.индексиров.''): candida tropicalis--continuous culture--fungus--growth--nonhuman--ph--temperature
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Khizhnyak S.V., Tausheva I.V., Berezikova A.A., Nesterenko E.V., Rogozin D.Yu.
Заглавие : Psychrophilic and psychrotolerant heterotrophic microorganisms of Middle Siberian karst cavities
Место публикации : Russian Journal of Ecology. - 2003. - Vol. 34, Is. 4. - С. 231-235. - ISSN 10674136 (ISSN) , DOI 10.1023/A:1024537513439
Ключевые слова (''Своб.индексиров.''): caves--heterotrophic microorganisms--karst cavities--psychorophilic and psychrotolerant microorganisms--bacterium--cavernicolous species--fungus--heterotrophy--karst--low temperature--russian federation--arthrobacter--bacteria (microorganisms)--chrysosporium--corynebacteriaceae--fungi--mucor--penicillium--pseudomonas
Аннотация: The natural microflora of Middle Siberian karst cavities, which comprises psychrotolerant bacteria and fungi capable of growing at 3-15 and 3...+28В°C, respectively, has been studied. Bacteria are ubiquitous in caves, their count varying from 103 to 107 cells/g ground. The bacteria have been identified as Pseudomonas, Arthrobacter, Bacillus, and coryneform bacteria. Fungi have been found in places exposed to increased anthropogenic impact, their count being as large as 106 to 107 cells/g ground. Mucor, Penicillium, and Chrysosporium were dominant fungal genera.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bondar V.S., Puzyr' A.P., Purtov K.V., Petunin A.I., Burov A.E., Rodicheva E.K., Medvedeva S.E., Shpak B.A., Tyaglik A.B., Shimomura O..., Gitel'zon I.I.
Заглавие : Isolation of luminescence system from the luminescent fungus Neonothopanus nambi
Колич.характеристики :3 с
Коллективы : Program of the Government of the Russian Federation "On Measures to Attract the Leading Scientists to the Educational Institutions of Russia" [11, G34.31.0058]; Siberian Branch of the Russian Academy of Sciences [71]
Место публикации : Dokl. Biochem. Biophys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2014. - Vol. 455, Is. 1. - С. 56-58. - ISSN 1607-6729, DOI 10.1134/S1607672914020045. - ISSN 1608-3091
Примечания : Cited References: 10. - This study was supported by the Program of the Government of the Russian Federation "On Measures to Attract the Leading Scientists to the Educational Institutions of Russia" (project no. 11, G34.31.0058) and the Siberian Branch of the Russian Academy of Sciences (project no. 71).
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Manukovsky N.S., Kovalev V.S.
Заглавие : Effect of biohumus on growth of oyster fungus Pleurotus ostreatus and Agaricus bisporus
Колич.характеристики :4 с
Место публикации : Mikol. Fitopatol.: MEZHDUNARODNAYA KNIGA, 1998. - Vol. 32, Is. 5. - P67-70. - ISSN 0026-3648
Примечания : Cited References: 8
Аннотация: The influence of biohumus on the yeild of oester mushroom has been studied. It was shown, that the highest yeild 9.73 g of dry mass per 100 g of dry substrate mass was an the substrate, containing 25 % of biohumus and 75 % of wheat straw. The possible cause of this effect could arise from increasing phosphorus content in the substrate. The hughest growth rate of champignon mycelium was 2.2-2.4 mm/day on the substrate, containing 94-96 % of wheat grains and 4-6 % of biohumus.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kobzeva T.V., Melnikov A.R., Karogodina T.Y., Zikirin S.B., Stass D.V., Molin Y.N., Rodicheva E.K., Medvedeva S.E., Puzyr A.P., Burov A.A., Bondar V.S., Gitelson J.I.
Заглавие : Stimulation of luminescence of mycelium of luminous fungus Neonothopanus nambi by ionizing radiation
Колич.характеристики :8 с
Коллективы : Program of Siberian Branch of Russian Academy of Sciences [71]; Council for Grants of the President of the Russian Federation for Support of Leading Scientific Schools [NSh 2272.2012.3]; Russian Foundation for Basic Research [12-03-33082]; Program of Government of Russian Federation "On the Efforts for Attracting Leading Researchers to Educational Institutions of Russia" [11.G34.31.0058]
Место публикации : Luminescence: WILEY-BLACKWELL, 2014. - Vol. 29, Is. 7. - С. 703-710. - ISSN 1522-7235, DOI 10.1002/bio.2656. - ISSN 1522-7243
Примечания : Cited References: 29. - The work was supported by the Program of Siberian Branch of Russian Academy of Sciences (project no. 71), Council for Grants of the President of the Russian Federation for Support of Leading Scientific Schools (project no. NSh 2272.2012.3), the Russian Foundation for Basic Research (project no. 12-03-33082), and the Program of Government of Russian Federation "On the Efforts for Attracting Leading Researchers to Educational Institutions of Russia" (grant no. 11.G34.31.0058).
Предметные рубрики: BIOLUMINESCENCE
COMPONENTS
MECHANISMS
SYSTEM
Ключевые слова (''Своб.индексиров.''): higher luminous fungi--neonothopanus nambi--ionizing irradiation--reactive oxygen species--lipid peroxidation
Аннотация: The luminescent system of higher luminous fungi is not fully understood and the enzyme/substrate pair of the light emission reaction has not been isolated. It was suggested that luminescence of fungi involves oxidase-type enzymes, and reactive oxygen species are important for fungal light production. Generation of reactive oxygen species can be stimulated by ionizing irradiation, which has not been studied for luminous fungi. We report the effect of X-irradiation on the luminescence of fungus Neonothopanus nambi. Experiments were performed withmyceliumon a home-built setup based on an X-ray tube and monochromator/photomultiplier tube. Application of X-rays does not change the emission spectrum, but after approximately 20 min of continuous irradiation, light production from unsupported mycelium starts growing and increases up to approximately five times. After peaking, its level decreases irrespective of the presence of X-irradiation. After staying at a certain level, light production collapses to zero, which is not related to the drying of the mycelium or thermal impact of radiation. The observed shape of kinetics is characteristic of a multistage and/or chain reaction. The time profile of light production must reflect the current levels of radicals present in the system and/or the activity of enzyme complexes involved in light production. Copyright (C) 2014 John Wiley & Sons, Ltd.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bondar V.S., Puzyr A.P., Burov A.E., Medvedeva S.E., Rodicheva E.K., Kobzeva T.V., Melnikov A.R., Karogodina T.Y., Zikirin S.B., Stass D.V., Molin, Yu. N., Gitelson J.I.
Заглавие : Effect of ionizing radiation on the luminescence of mycelium of luminous fungus Neonothopanus nambi
Колич.характеристики :4 с
Коллективы : Support Program for Interdisciplinary Projects of the Siberian Branch of the Russian Academy of Sciences [71], Program of the President of the Russian Federation for Support of Leading Scientific Schools [NSh-5744.2014.3]
Место публикации : Dokl. Biochem. Biophys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2015. - Vol. 460, Is. 1. - С. 30-33. - ISSN 1607-6729, DOI 10.1134/S1607672915010093. - ISSN 1608-3091(eISSN)
Примечания : Cited References:15. - This work was supported in part by the Support Program for Interdisciplinary Projects of the Siberian Branch of the Russian Academy of Sciences (project no. 71) and the Program of the President of the Russian Federation for Support of Leading Scientific Schools (project no. NSh-5744.2014.3).
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Purtov, K. V., Petunin, A. I., Rodicheva, E. K., Bondar, V. S., Gitelson, J. I.
Заглавие : Components of the luminescent system of the luminous fungus Neonothopanus nambi
Колич.характеристики :4 с
Коллективы : Program of the Siberian Branch of the Russian Academy of Sciences [71]
Место публикации : Dokl. Biochem. Biophys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2015. - Vol. 461, Is. 1. - С. 65-68. - ISSN 1607-6729, DOI 10.1134/S1607672915020027. - ISSN 1608-3091(eISSN)
Примечания : Cited References:10. - This work was supported by a Program of the Siberian Branch of the Russian Academy of Sciences (project no. 71).
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Dementyev D. V., Zotina T. A., Manukovsky N. S., Kalacheva G. S.
Заглавие : Biosorption of 241Am from solution and its biochemical fractionation in the mycelium of macromycetes
Место публикации : Radiochemistry. - 2015. - Vol. 57, Is. 6. - С. 661-665. - ISSN 10663622 (ISSN) , DOI 10.1134/S1066362215060144
Ключевые слова (''Своб.индексиров.''): americium--fungus mycelium--sorption
Аннотация: Experiments with macromycetes Pleurotus ostreatus, Neonothopanus nambi, and Agaricus bisporus demonstrated for the first time that live mycelium of mushrooms, cultivated on a liquid culture medium, can efficiently take up dissolved 241Am in its biomass. Biochemical fractionation of the mycelium biomass demonstrated for the first time that the major fraction (up to 90%) of 241Am accumulated in the mycelium is bonded to structural polysaccharides of the cell walls. The sorption capacity of cell wall polysaccharides for 241Am is 2.7-3.6 times higher than that of the initial mycelium biomass, and the activity concentration of 241Am in the polysaccharides reached 950 Bq g-1 dry weight. © 2015 Pleiades Publishing, Inc.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Puzyr A. P., Medvedeva S. E., Bondar V. S.
Заглавие : The use of glowing wood as a source of luminescent culture of fungus mycelium
Колич.характеристики :17 с
Коллективы : RF Government [11.G34.31.0058]; SB RAS [71]
Место публикации : Mycosphere: MYCOSPHERE PRESS, 2016. - Vol. 7, Is. 1. - С. 1-17. - ISSN 2077-7000, DOI 10.5943/mycosphere/7/1/1
Примечания : Cited References:22. - The authors are grateful to Prof. A. Frank, Director of North Borneo Biostation, for the opportunity to carry out studies of glowing wood; to Nadezhda N. Kudashova, a senior researcher at the Institute of Biology and Biophysics at the Tomsk University, for identifying the species of nonluminous fungi. This study was supported by grant no. 11.G34.31.0058 (RF Government) and Projects no. 71 (SB RAS).
Предметные рубрики: BIOLUMINESCENCE CHARACTERISTICS
NEONOTHOPANUS-NAMBI
LIGHT-EMISSION
Ключевые слова (''Своб.индексиров.''): bioluminescence--culture of luminous mycelia--kinetics of luminescent--reaction--light emitting wood--luminous fungus
Аннотация: In studies of fungal bioluminescence, not only fruiting bodies and spores of the fungus, but also samples of luminescent wood, leaf litter or soil may need to be used to derive pure mycelial culture. This study describes an approach to isolating the culture of luminescent fungal mycelium from samples of light-emitting wood found on Borneo Island in November-December 2013. A GelDoc XR Imaging System (Bio-Rad Laboratories, Inc., U.S.) was used for the first time to monitor luminescence and select luminous samples. This study shows that for successful isolation of the culture of luminescent mycelium out of the luminescent wood found in the forest, it is imperative to keep the samples moist (mycelium alive until there is water), while immediate and aseptic delivery of the samples to the laboratory is not a crucial condition (inner layers of wood is "sterile"). Investigation of the growth features of the isolated mycelium in various growing conditions revealed some peculiar properties of its luminescence in comparison with the known luminescent cultures of basidiomycetes. When grown on solid nutrient media, mycelium exhibits low growth rates, long-lasting luminescence (140 days or longer), and emergence and disappearance of local zones with high levels of light emission. Mycelium produced in submerged culture does not emit light, and this effect must be caused by the absence or a very low level of the luminescent reaction substrate in the biomass. The luminescence system isolated from mycelial biomass did not induce luminescent reaction in vitro upon the addition of NADPH (recording intensity is 60 100 URL/sec). We found that enzymes of the luminescence systems isolated from mycelium pellets retained their activity and catalyzed luminescent reaction when a hot extract of the luminous fungus Armillaria sp. (IBSO 2360) was added (near 1900 URL/sec). The same effect was obtained after addition of hot extracts from the fruiting bodies of nonluminous higher fungi Pholiota squarrosa, Cortinarius sp., Hypholoma capnoides and Chroogomphus rutilus (near 3500 URL/sec). The pure culture of luminescent mycelium has been registered in the Culture Collection of IBP SB RAS as IBSO 2371; now it can be used for various in vivo and in vitro studies, including identification of the fungus.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mogilnaya O. A., Ronzhin N. O., Bondar V. S.
Заглавие : Comparative evaluation of total peroxidase and catalase activities during light emission of luminous fungus Neonothopanus nambi
Место публикации : Mycosphere: Guizhou Key Laboratory of Agricultural Biotechnology, 2016. - Vol. 7, Is. 4. - С. 499-510. - ISSN 20777000 (ISSN) , DOI 10.5943/mycosphere/7/4/9
Ключевые слова (''Своб.индексиров.''): basidiomycetes--hydrogen peroxide--luminescence--stress
Аннотация: Submerged cultivation of luminous fungus Neonothopanus nambi under orbital stirring causes formation of pellets with smooth or rough surfaces. The experiments showed that luminescence of the pellets washed in water increased considerably. Previous studies suggested possible participation of peroxidases in the light emitting reaction. In this study, oxidative azo coupling reaction accompanied by formation of chromogen was used to evaluate peroxidase activity in vivo, in brightly luminescent pellets and in pellets with low luminescence intensity (dim ones). Staining of the brightly luminescent pellets took a few minutes, and their staining intensity was several times higher than that of the dim pellets. From the results of in vivo experiments it was concluded that the bright pellets differed from the dim ones in the production of hydrogen peroxide, or, possibly, other peroxides. Measurements of total peroxidase and catalase activities in pellet extracts also showed an increase in enzyme activities along with an increase in luminescence intensity of native pellets. However, results of the in vitro experiments do not definitively suggest a direct relationship between luminescence and activity of these enzymes. We assume that luminescence of this fungal species may be an additional way to neutralize peroxide compounds under stress. © Guizhou Academy of Agricultural Sciences.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Puzyr A. P., Medvedeva S. E.
Заглавие : Luminescence of wood samples during long-term storage
Место публикации : Mycosphere: Guizhou Key Laboratory of Agricultural Biotechnology, 2016. - Vol. 7, Is. 6. - С. 716-727. - ISSN 20777000 (ISSN) , DOI 10.5943/mycosphere/7/6/2
Ключевые слова (''Своб.индексиров.''): light emitting wood--luminous mycelia
Аннотация: The present study describes changes in the mycelium of the fungus growing on the luminescent wood collected on Borneo Island in early December 2013 that occurred during 31 months of storage. The study shows that wood samples retain their ability to emit light, forming two types of luminescent mycelium: surface mycelium and aerial mycelium. The hyphae of the surface mycelium form on the surface of the wood sample and then spread over the surface of the polyethylene bag or over the surface of the bottom of tissue culture flasks containing the samples. The aerial mycelium develops later and only in tissue culture flasks, forming biomass composed of local interlaced hyphae, growing upward. The surface mycelium is characterized by non-uniform "flickering" luminescence along the hyphae. There is no diurnal periodicity in the luminescence of this fungus, but luminescence is increased by mechanical disturbance or exposure to ultraviolet radiation. The local impact of these factors causes an increase in luminescence of the mycelium regions that have not been directly affected. It has been assumed that the variable level of luminescence is an individual trait of this fungus species. The results obtained in this study suggest that luminescent wood found on Borneo Island contains mycelium of a fungus species, whose luminescent properties are essentially different from those of the fungi described in the scientific literature.
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Puzyr A. P., Medvedeva S. E., Bondar V. S.
Заглавие : Biochemical changes causes lack of bioluminescence in fruiting bodies of Armillaria
Место публикации : Mycosphere: Guizhou Key Laboratory of Agricultural Biotechnology, 2017. - Vol. 8, Is. 1. - С. 9-17. - ISSN 20777000 (ISSN) , DOI 10.5943/mycosphere/8/1/2
Ключевые слова (''Своб.индексиров.''): enzymes and substrate of luminescent reaction--kinetics of luminescence--luminous mycelia--nonluminous fruiting bodies of fungus
Аннотация: Mycelium of Armillaria species exhibit bioluminescence in nature and when cultivated on artificial nutrient media. However, fruiting bodies do not emit visible light. The present study investigates biochemical changes which cause this phenomenon. Light emission was studied in experiments with mixtures of cold and hot extracts of the luminous mycelium of Armillaria borealis IBSO 2328 and nonluminous fruiting bodies of this fungus and an unidentified species of the genus (Armillaria sp.). Hot extracts of fruiting bodies of the nonluminous Pholiota squarrosa were used as the substrate analog of the luminescent reaction, as previously this fungus had been found to contain a high amount of this substance. Control experiments showed that cold extracts of A. borealis IBSO 2328 mycelium contained enzymes for the luminescent reaction, which is initiated after addition hot extracts of P. squarrosa fruiting bodies. Parallel experiments with extracts of the fruiting bodies of Armillaria showed that: (i) - cold extracts did not contain enzymes of the luminescent reaction or contain very small amounts of these enzymes and (ii) - hot extracts did not contain substrate of the luminescent reaction. Thus, the reason why fruiting bodies of Armillaria do not emit light is that they do not contain components required for visible luminescence. The study discusses possible causes why the enzymes and substrate of the luminescent reaction are not synthesized in fruiting bodies of Armillaria. © Guizhou Academy of Agricultural Sciences.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Purtov K. V., Petushkov V. N., Rodionova N. S., Gitelson J. I.
Заглавие : Why does the bioluminescent fungus Armillaria mellea have luminous mycelium but nonluminous fruiting body?
Место публикации : Doklad. Biochem. Biophys.: Maik Nauka Publishing / Springer SBM, 2017. - Vol. 474, Is. 1. - С. 217-219. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672917030176
Аннотация: By determining the components involved in the bioluminescence process in luminous and nonluminous organs of the honey fungus Armillaria mellea, we have established causes of partial luminescence of this fungus. The complete set of enzymes and substrates required for bioluminescence is formed only in the mycelium and only under the conditions of free oxygen access. Since the synthesis of luciferin precursor (hispidin) and 3-hydroxyhispidin hydroxylase in the fruiting bodies is blocked, the formation of luciferin—the key component of fungal bioluminescent system—was not observed. That is why the fruiting body of Armillaria mellea is nonluminous despite the presence of luciferase, the enzyme that catalyzes the oxidation of luciferin with a photon emission. © 2017, Pleiades Publishing, Ltd.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mogilnaya O. A., Ronzhin N. O., Artemenko K. S., Bondar V. S.
Заглавие : Morphological properties and levels of extracellular peroxidase activity and light emission of the basidiomycete Armillaria borealis treated with beta-glucosidase and chitinase
Колич.характеристики :12 с
Коллективы : Russian Academy of Sciences [0356-2016-0709, 0356-2015-0103]
Место публикации : Mycosphere: MYCOSPHERE PRESS, 2017. - Vol. 8, Is. 4. - С. 649-+. - ISSN 2077-7000, DOI 10.5943/mycosphere/8/4/11
Примечания : 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).
Предметные рубрики: FUNGAL CELL-WALL
OXIDATIVE STRESS
PHANEROCHAETE-CHRYSOSPORIUM
Ключевые слова (''Своб.индексиров.''): 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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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mogilnaya O. A., Ronzhin N. O., Bondar V. S.
Заглавие : Estimating levels of light emission and extracellular peroxidase activity of mycelium of luminous fungus Neonothopanus nambi treated with ?-glucosidase
Место публикации : Curr. Res. Environ. Appl. Mycol. J. Fungal: Beijing Academy of Agriculture and Forestry Sciences, Institute of Plant and Environment Protection, 2018. - Vol. 8, Is. 1. - С. 75-85. - ISSN 22292225 (ISSN) , DOI 10.5943/cream/8/1/6
Ключевые слова (''Своб.индексиров.''): basidiomycetes--cell wall--luminescence--polysaccharide sheath
Аннотация: The present study estimates the level of extracellular peroxidase activity and light emission intensity of mycelium of luminescent basidiomycete Neonothopanus nambi treated with ?-glucosidase. A hypothesis has been proposed that treatment with ?-glucosidase may trigger biochemical mechanisms of activation of ROS (primarily hydrogen peroxide) generation in N. nambi mycelium. The results obtained indicate that the enzyme causes partial disintegration of the slimy sheath of fungal hyphae and intracellular matrix, which leads to release of the extracellular peroxidases to the incubation medium. Mycelial cells treated with the enzyme reach the peak of their luminescence sooner. It has been assumed that partial loss of extracellular peroxidases, as important enzymes of antioxidant defense, may be compensated for by an increase in the level of light emission by the fungus. © 2018 Beijing Academy of Agriculture and Forestry Sciences.
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