Mitochondrial gene NADH dehydrogenase subunit 1 (nad1), β-tubulin gene, and elongation factor 1-alpha (tef) were used to characterize identify 42 Lecanicillum spp. isolates (former complex species Verticillium lecanii Zimm. Viegas) study the phylogenetic relationships in this group. Within under investigation, Lecanicillium muscarium was most common (about 70% of all isolates, collected on different hosts, predominantly insects from order Hemiptera). Based nad1 sequencing four main molecular...

Septoria blotches represent some of the most harmful wheat diseases that encompass all grain-producing countries worldwide. They are caused mainly by fungi genera Parastagonospora and Zymoseptoria. The aims research were to analyze nucleotide sequences two phylogenetically informative DNA loci, ITS tub2, nodorum isolates from Altai Krai, detect presence Tox1, Tox3, ToxA effector genes study virulence isolates. Microscopic analysis fragments affected plant tissue was used for primary...

The distribution and genetic diversity of 91 Beauveria isolates collected during a long-term survey in boreal forests northern European Russia was studied. Based on morphological sequence analysis TEF Bloc loci, three spp. were identified: B. pseudobassiana, bassiana, caledonica, with abundance 81, 11, 8%, respectively. Through multilocus sequencing, four haplotypes bassiana two caledonica detected. Twelve pseudobassiana non-random identified. Two the most abundant widespread occurring...

Sosnowsky's hogweed (Heracleum sosnowskyi; Apiaceae) is cultivated as a forage plant. However, in some regions it appears weed dangerous for human health. Over the period July-August 2008, individual H. sosnowskyi plants with vigorous blight symptoms (Fig. 1) were observed two places (35 km apart) Leningrad region of northwestern Russia. Diseased had brown or orange-brown spots on leaves 2). On coalesced to form large necrotic areas leaf centre margin. The pathogen was isolated by fixing...

Variability of the Russian population Puccinia triticina from durum wheat was studied with virulence and simple sequence repeat (SSR) markers. The pathogen sampled during 2017 to 2019 in all regions sizable (Triticum durum) growing areas winter (North Caucasus) spring (Middle Volga, Ural, West Siberia) wheat. A total 474 isolates were tested on a set 20 Lr-gene lines. Molecular genotypes for 105 selected determined at 11 SSR loci. Variable virulence/avirulence reaction observed only three...

Brief information on the main groups of microorganisms parasitizing locusts and grasshoppers is given. It has been shown that viral most bacterial infections have no practical prospects, both as natural regulators density populations potential producers bioinsecticides. Alpha-proteobacteria, entomophthoralean fungi microsporidia may make some contributions mechanisms population dynamics. The significant group biopesticides are anamorphic ascomycetes from genera Metarhizium Beauveria .

Introduction. Barley can be infected with a broad variety of fungi, which cause considerable loss crop yield and reduce the quality grain. Modern vision on geographical ecological distribution biodiversity micromycetes has been established by traditional, cultivation-based methods. However, more recently, molecular methods have shifted microbiological research to new level, making it possible investigate hidden taxonomical biodiversity. Study objects For this study, we determined fungal...

Abstract Genomic DNA samples from larvae of the beet webworm Loxostege sticticalis collected in south‐western Russia were used to amplify mitochondrial cytochrome oxidase unit I ( COI ) gene. In a small proportion samples, sequenced product showed considerable heterogeneity due admixture minor sequence. A preliminary BLAST analysis 100‐bp‐long fragment this sequence its maximal similarity gene region Cotesia, genus braconid larval endoparasitoids Lepidoptera. An additional primer was...

The article presents the results of studying a lectotype specimen Dictyophora sibirica. abolition genus name justifies transfer this taxon to Phallus, with new combination being Phallus sibiricus. A recently collected from locus classicus corresponds original description and is designated as an epitype due impossibility sequencing DNA holotype. Synonymy between sibiricus P. ultraduplicatus proposed, based on morphology comparison ITS sequences.

Galinsoga parviflora is an herbaceous dicotyledonous plant in the Asteraceae that common disturbed habitats and agricultural areas across various temperate subtropical regions of world. In this study, several pathogenic strains were isolated from host, further morphological phylogenetic analysis DNA sequences nuclear rDNA ITS1-5.8S-ITS2 (ITS barcode) five other gene (act, chs-1, gapdh, his3, tub2) revealed a new species, described here as Colletotrichum galinsogae sp. nov. The pathogenicity...

The species composition of fungal pathogens among three the most harmful locust (Asian migratory locust, Moroccan and Italian locust) in southern Russian Federation was studied. Insects were sampled 20 locations seven federal subjects (Republic Dagestan, Republic Kalmykia; Krasnodar Stavropol Krai; Astrakhan, Volgograd Rostov Regions). Forty-five isolates belonging to genus Beauveria collected, particularly B. bassiana pseudobassiana. prevalent, constituting 98% samples, could be...