G. P. Kononenko

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Fresh picked and herbarium thalli of Cladonia stellaris, C. rangiferina, Allocetraria nivalis, A. cucullata, Cetraria islandica, Peltigera canina, and Nephroma articum epigene lichens were studied using the immune-enzyme analysis. No big difference was observed in the contents of mycotoxin secondary metabolites, i.e., deoxynivalenol, diacetoxyscirpenol,(More)
The composition of low-molecular biologically active metabolites typical of microscopic fungi has been studied in blastemas of fruticose lichens of the genera Cladonia, Cetraria, Evernia, Bryoria, and Usnes. The enzyme immunoassay method showed the presence of sterigmatocystin, emodin, mycophenolic acid, citrinin, alternariol, and diacetoxyscirpenol, which(More)
Secondary fungal metabolites (mycotoxins) in 22 lichen species of the families Parmeliaceae, Nephromataceae, Umbilicariaceae, Ramalinaceae, Cladoniaceae, Peltigeraceae, and Teloschistaceae were determined by enzyme-linked immunosorbent assay. The following mycotoxins were found in these lichens in a broad concentration range with a frequency of 70–100%:(More)
An enzyme immunoassay for usnic acid in lichens was developed, the sensitivity of which was 0.1 μg/g of air-dried material (0.00001%). Polyclonal rabbit antibodies against bovine serum albumin conjugated to (+)-usnic acid under the conditions of formaldehyde condensation made it possible to determine the analyzed substance in solutions at concentrations(More)
The levels and frequencies of mycotoxin accumulation in lichens belonging to 20 genera of the families Cladoniaceae, Nephromataceae, Parmeliaceae, Peltigeraceae, Teloschistaceae, and Umbilicariaceae were characterized using enzyme immunoassay. Alternariol, sterigmatocystin, mycophenolic acid, citrinin, cyclopiazonic acid, and emodin were regularly detected(More)
Complexes of mycotoxins in fruticose lichens of 14 species belonging to five genera of the family Parmeliaceae were characterized in number, composition, and content of individual components. It was shown that species of the genus Bryoria always contain five mycotoxins (sterigmatocystin, mycophenolic acid, citrinin, emodin, and alternariol). In Evernia and(More)
The distribution of mycotoxins and usnic acid in the thallus of epigeous fruticose lichens Alectoria ochroleuca; several species of the genera Cladonia, Cetraria, and Flavocetraria; foliose lichens Nephroma arcticum; and six species of the genus Peltigera were studied by enzyme-linked immunosorbent assay. The mycotoxin content was lower in the top or apical(More)
The component composition of mycotoxin complexes is characterized in foliose lichens of genera Nephroma, Peltigera, Umbilicaria, and Xanthoria. The interspecies differences in the genus Peltigera are expressed by the number of metabolites detected, from seven in P. aphthosa to three in P. canina, P. didactyla, P. praetextata, and P. rufescens. In Nephroma(More)
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