N.N. Zhdanova's research while affiliated with National Academy of Sciences of Ukraine and other places

Publications (34)

Article
Radionuclides in the environment are one of the major concerns to human health and ecotoxicology. The explosion at the Chernobyl nuclear power plant renewed interest in the role played by fungi in mediating radionuclide movement in ecosystems. As a result of these studies, our knowledge of the importance of fungi, especially in their mycorrhizal ha...
Chapter
Following the development of nuclear weapons and the subsequent evolution of nuclear energy-generating industries, there has been considerable concern regarding the safe storage of radionuclide waste. Widescale release, in the aftermath of nuclear detonations or as the result of malfunction of atomic energy plants and reprocessing facilities, has a...
Article
In 7 species of micromycetes which were isolated from radioactive contaminated areas of Chernobyl NPP zone under exposure of two artificial sources: y-low energy (121Sn) and radiation mix type gamma + beta (137Cs). Two new earlier unknown radioadaptive properties for fungi--radiotropism and radiostimulation were established. The strains, which were...
Article
Species compasition of microorganisms extracted from fuel system of airplane being used in countries with subtropical climate (namely from aviation fuel TS-1, fuel line of airplane, mucilaginous formations on covers of fuel tank and filters of airplane) is provided. Microscopic fungi, namely // Hormoconis resinae f. avellaneum, Aspergillus niger, f...
Article
Full-text available
The accident at the Chernobyl Atomic Energy Station resulted in radiation contamination of large tracts of land and particularly the reactor building itself. Sustained exposure of microfungi to radiation appears to have resulted in formerly unknown adaptive features, such as directed growth of fungi to sources of ionizing radiation. We evaluate her...
Article
The accident at the Chernobyl Atomic Energy Station resulted in radiation contamination of large tracts of land and particularly the reactor building itself. Sustained exposure of microfungi to radiation appears to have resulted in formerly unknown adaptive features, such as directed growth of fungi to sources of ionizing radiation. We evaluate her...
Article
Microscopic fungi of 47 species and 24 genera isolated from radioactive soil and other radioactive substrates of a 10-km alienation zone from Chernobyl Nuclear Power Plant were investigated. Only 19 % of such fungi showed toward the ionizing irradiation source positive radiotropism. Strains with best-defended radiotropism responded to the influence...
Article
It was identified 73 species and 40 genera (230 strains) of micromycetes. They have been isolated from heavy metals polluted soils and reserve soils. We have found 1 new (Wardomyces simplex) and 11 rare species for Ukrainian micobyota: Absidia cylindrospora, Cunninghamella echinulata, C. elegans, Fusarium sambucinum var. coeruleum, Gongronella butl...
Article
The mycobiota of A0L-, A0F- and A0H- horizons of forest litter of ChNPP limit zone testing areas (environs of Novo-Shepelichi and Level village) was studied. It was shown that higher litter horizon had greates specific diversity. The quantity of fungal biomass changed with the depth of litter horizon as a rule increasing in lower layers and with se...
Article
During the last 15 years, about 2000 strains of 200 species of 98 genera of fungi have been isolated from around the Chernobyl Atomic Energy Station. Many of these microfungi are capable of growing into and decomposing 'hot particles'; carbon based radioactive graphite from the reactor and there are suggestions that some fungi actively direct their...
Article
The influence of different temperature conditions (from 5 to 37°C) on the growth, morphology and pigmentation of some black yeast-like fungal species (13 strains) was investigated. Fungi were isolated from radioactively polluted and control (clean from radionuclides) sites. The temperature optimum of fungal growth was established. In correspondence...
Article
The survival of 4 species (14 strains) of black-pigmented yeast-like fungi, isolated from radioactive polluted ecotopes, after UV-irradiation has been studied. Their survival was different in the limits of 3 orders from 0.7 to 0.0001% and was described by the exponential composite exponential and composite sigmoid types of dose curves. Essential he...
Article
Overgrowing (interaction) and dissolution of intact and milled hot particles by various micromycetes were studied under laboratory conditions. Hot particles used for the investigation originated from the Chernobyl accident release and atomic bomb testing sites. The micromycetes investigated were mitosporic fungi mainly isolated from the Chernobyl s...
Article
The influence of soil micromycetes (melanin-containing, dark-pigmented Cladosporium cladosporioides and light-pigmented Paecilomyces lilacinus) on 137Cs accumulation by aboveground phytomass of some higher plants (sugar beet, cabbage and clover) was studied in field experiments in radionuclides contaminated soil of the Chernobyl zone with total rad...
Article
Reactions on the ionizing radiation of 14 Cladosporium cladosporioides strains were studied. Only 5 of them displayed radiotropizm. The ability of C. cladosporioides strains 4 and 5 with positive radiotropizm and museum C. cladosporioides strain 396 and its alb-mutant SM without positive radiotropizm to destruct radioactive particles of Chernobyl a...
Article
The work aim was the discovering of peculiarities of microscopic fungi responding to radioactive pollution by growth velocity change. The linear growth velocity of a broad range of micromycetes was analyzed. They were chosen in such a way that every species, as far as possible, was presented by the strains isolated from radioactive polluted and cle...
Article
The resistance of chitin and chitosan (from industrial waste) to fungal action was studied. Fungal species for this study were isolated from air and polluted water. It was shown that the main factor for destruction of chitin containing substrate is pH value. Search for chitin- and chitosan-destructive species among fungi from above mentioned group...
Article
Data about the influence of different carbon and nitrogen sources (14 and 22 respectively) on the growth and pigmentation of black yeast-like fungal species (Aureobasidium pullulans, Hormonema dematioides, Exophiala cf. jenselmei and Exophiala sp.) are presented. Accumulation of fungal biomass, changes in pH of the medium and the intensity of melan...
Article
Species diversity (total number 45 species) of micromycetes found on various surfaces of works of easel painting, on walls and dust of storehouses of Kiev Museum of Western European Painting (Ukraine) is discussed. Species of the genera Penicillium and Aspergillus are registered with the highest frequency on works of painting. Main source of microm...
Article
Results on determination of radial (linear) growth rate of melanin-containing fungi Cladosporium sphaerospermum Penz. and Alternaria alternata (Fr.) Keissler concerning place of their isolation and ecologic peculiarities are presented in the paper. Essential differences, as to all studied indices of the strains of C. sphaerospermum strains, isolate...
Article
Full-text available
Positive radiotropism is common in fungi isolated from the area of the Chernobyl power plant. The aim was to study the submerged growth of one of these fungi, strains of Cladosporium cladosporioides, to search for correlations between positive radiotropic reaction and melanin synthesis with growth responses under low-level γ-irradiation. In contras...
Article
According to early elaborated methods of mathematical ecology fungal species - bioindicators of high, middle and low level of radioactive pollution of soils and forest litters of limits zone ChNPP were discovered. There are Chaetomium aureum and Paecilomyces lilacinum; Acremonium strictum and Arthrinium phaeospermum; Metarhizium anisopliae and Myro...
Article
Extensive fungal growth has been detected on the walls and other building constructions in the inner parts of the Shelter of the damaged fourth Unit of the Chernobyl Nuclear Power Plant in 1997-98. The mycobiota comprised 37 species of 19 genera. Zygomycetes and ascomycetes were represented by one species each: Mucor plumbeus and Chaetomium globosu...
Article
Screening of producers of alpha-N-acetylgalactosaminidase among 854 strains of micromycetes, 171 yeast and 357 bacterial cultures has been carried out. A capacity to synthesize the enzyme was revealed in 11% of cultures. Representatives of Aspergillus genus (activity--0.11-0.142 un./ml) were most active in producing the enzyme. It has been establis...
Article
Full-text available
This is probably the first report on intraspecific variation in radiation resistance for filamentous fungi. It was revealed that natural ("field") strains of the filamentous fungus Alternaria alternata are extremely variable in response to gamma-irradiation ranging from supersensitive to highly resistant to radiation. At the same time nearly all st...
Article
The effects of radionuclide pollution in soil on fungi following the accident at the Chernobyl Atomic Electric Station were investigated. Community structure was analysed using correlation analysis, resulting in the compilation of community pleaids (constellations) to describe links between fungal genera. This is one of the first times this method...
Article
The nature of the radionuclide contamination resulting from Chernobyl disaster is in its spatial and aggregate heterogeneity determined by the interaction of systematic and incidental factors. To study the radionuclide migration in the soil-plant system, an independent statistical index of contamination heterogeneity H = RAsAp is proposed which is...
Article
The paper deals with mycobiota of radionuclide-polluted soils of seven stationary posts in the 30-kilometer zone of the Chernobyl NPP and one in the vicinities of Kiev (Feofaniia). The lengths of light-and dark-coloured fungal mycelium were determined in the soil under study by the method of membrane filters for 1987-1989. Data obtained have been a...
Article
Complexes of soil micromycetes in the Chernobyl 30-km zone of the Ukrainian Polesye were studied for 1986-1989 with regard for such ecological parameters as the level of radiation contamination, a particular observation site, depth of soil horizon and season. As a result of the study correlation pleiads of soil micromycete complexes have been revea...
Article
A model system which permits observing for a long time and fixing interaction of fungi with a radiation source has been created on the basis of an isolated "hot" particle, deficient mineral medium (saccharose content 60 mg/l) and suspension of fungal conidia. Five species (six strains) of micromycetes isolated from radionuclide-contaminated soils a...

Citations

... Additionally, some of these dematiaceous fungi have also been found to populate the interiors of spacecraft in low Earth orbit (LEO), where exposure to ionizing radiation is also intensified (Dadachova and Casadevall, 2008). Black molds and their conidia have been found to remain viable even after exposure to an equivalent radiation dose of several months' worth of space radiation (Cortesão et al., 2020); radiation even appears to stimulate their germination (Tugay et al., 2006). How these organisms protect themselves from radiation damage has been the subject of intense study, and specifically, melanin has been explored as a biotechnological means for radioprotection (Pacelli et al., 2017;Malo et al., 2018). ...
... Some melanized parasites have appeared to be great contender for bioremediation of defiled destinations, because of the capacity of contagious melanin to tie to overwhelming metals and radionuclides in polluted locales. Test confirm demonstrates that the collection of 90Sr by conidia or mycelium by a scope of microfungal animal varieties is more noteworthy in pigmented than in unpigmented species [132,5]. Different investigations have shown the potential utilization of the melanized organisms for the expulsion of radionuclides and substantial metals from watery arrangements, giving an elective intends to influence cleanup of mechanical emanating [5, 133, 134, 135, 75, 80, 136, and 137]. ...
... Studies of soil fungal, bacterial and protist communities in highly radioactively polluted soils demonstrated different patterns of abundance, biomass and activity change. This resulted in a serious change in feeding resource structure and availability for soil animals (Zhdanova et al., 1999). For example spore germination rates of certain fungal species were reduced by 20% at 0.5-1.0 ...
... Possessing high absorption capacity and exerting active exometabolites, they play important role in processes of destruction and transformation of organic matter in soil [2][3][4]. A changes in composition of microscopic fungi in anthropogenic conditions attracts attention of many scientists worldwide [5][6][7]. Microscopic fungi are essential inhabitants of soil, which participate in processes linked with degradation of organic substrates of different origin, and qualitative and quantitative composition varies in accordance with character of pollution. Thus, comparative analysis of developing mycobiota revealed that micromycetes characteristic for grey forest soil dominated in the initial grey unpolluted soil. ...
... Radiation has significant effects on microbial communities. For example, they regulate local soil microbial communities (Zhdanova et al., 2005), gut microbiomes of mammals (Lavrinienko et al., 2018), and endophyte communities of local plants (Zhu et al., 2021). However, how environmental radiation affects the seasonal change of endophytic microbial communities in plants remains unknown. ...
... The latter grows in Chernobyl and shows clear sign of radiotropism, which means that the fungus behaves towards the radiation like a plant towards sunshine. Both are radiation and melanotic fungi thrives in extreme environments and provides us with an example how to harvest EM radiation (Zhdanova, et al., 2001). Melanin can absorb even 10 times the amount of radiation an astronaut would get during 1 trip to Mars (Cortesão, et al., 2020). ...
... Fungi have since long been proven to be regulating radionuclide movement in soils [19,[63][64][65][66]. No data are available on the bioconcentration of 210 Po in microscopic fungi, but for macroscopic fungi (mushrooms) as well as for liquens, it is known that they concentrate 210 Po from the soils and from air [18]. ...
... In the cave sediments the genera Preussia, Aspergillus, Acremonium, Mortierella and Penicillium were coincident with those found in Chernobyl as well as the species Pseudogymnoascus pannorum, Neocosmospora solani, Fusarium oxysporum, Penicillium citrinum, and Purpureocillium lilacinum (Zhdanova et al., 1994(Zhdanova et al., , 2000Egorova et al., 2015). However, all these fungi can be considered as cave inhabitants, either in ionized caves or not, which indicates that these species are relatively tolerant to ionizing radiations. ...