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Leclerque A.,Julius Kuhn Institute | Leclerque A.,TU Darmstadt | Mitkovets P.V.,Julius Kuhn Institute | Mitkovets P.V.,All Russian Institute for Plant Protection | And 4 more authors.
Journal of Pest Science | Year: 2013

Wireworms, the polyphagous larvae of click beetles belonging to the genus Agriotes (Coleoptera: Elateridae), are severe and widespread agricultural pests affecting numerous crops. Biological control agents and methods for this general pest are highly solicited. In a screening for microbial Agriotes pathogens, an intracellular bacterium and a mitosporic fungus were isolated. Phylogenetic analysis based on ribosomal RNA operon sequences of both micro-organisms corroborated their previous morphology-based taxonomic classification. The bacterial pathogen has been assigned to the taxonomic genus Rickettsiella (Gammaproteobacteria) wherein it represents a new pathotype, 'Rickettsiella agriotidis', that appears most closely related to subjective synonyms of the nomenclatural type species, Rickettsiella popillae. The fungal pathogen has been shown to belong to the form-species Beauveria bassiana, i. e., an obligate anamorph related to the genus Cordyceps (Ascomycota: Hypocreales). Furthermore, the B. bassiana strain from Agriotes has been shown to be potentially susceptible to identification by gIi-diagnosis, i. e., a diagnostic method making use of the strain-specific presence of self-splicing group-I introns within the ribosomal RNA operons of certain hyphomycetous fungi. © 2012 Springer-Verlag. Source


Davidian G.E.,All Russian Institute for Plant Protection | Gultekin L.,Ataturk University
Entomological Review | Year: 2015

The distributional characteristics of Pimelia cursor Ménétries, 1832 (Tenebrionidae), Araxia mucronata Khnzorian, 1957, A. cristofaroi Gültekin et Borovec, 2008, and Ptochomorphus latiscrobs (Hochhuth, 1847) (Curculionidae: Entiminae: Sciaphilini) are considered. It is shown that the ranges of P. cursor, A. mucronata, and P. latiscrobs have similar disjunction in the Kura-Aras Lowland. A presumable scenario of the origin of this disjunction is discussed. © 2015, Pleiades Publishing, Inc. Source


Timofeev S.A.,All Russian Institute for Plant Protection
Vestnik Rossiiskoi Akademii Meditsinskikh Nauk | Year: 2015

Microsporidiosis is an ubiquitous opportunistic disease that usually appears in immunocompromised patients: AIDS patients or organ-transplant recipients. The infectious agents of disease are fungi-related obligate intracellular parasites - microsporidia. Alongside with Cryptosporidium and Cytomegalovirus, these parasites are the most common causative agents of diarrhea in HIV-infected patients. Intestinal form of microsporidiosis has been most frequently observed, but microsporidia can affect almost any organs of the human body, eyes, lungs, muscles, organs of the nervous system. The present paper overviews the current data on the etiology, pathogenesis, epidemiology, clinical presentation, diagnosis and treatment methods of microsporidiosis. Source


Mitina G.V.,All Russian Institute for Plant Protection | Tokarev Y.S.,All Russian Institute for Plant Protection | Movila A.A.,Moldova Academy of Sciences | Yli-Mattila T.,University of Turku
Ticks and Tick-borne Diseases | Year: 2011

Polymorphism of 10 Beauveria bassiana strains, isolated from Ixodes ricinus in Moldova, was evaluated using traditional (morphological and cultural properties) and molecular (RAPD patterns and ITS sequences) methods. The isolates differed greatly in morphological and cultural features, such as color, consistence, and growth rate. Four RAPD-PCR markers were used to evaluate genetic diversity of the strains. Phylogenetic neighbor-joining analysis of RAPD patterns divided strains into 3 major clades. The ITS sequences of 8 strains were identical to those of known B. bassiana strains. Two subsets (1 and 2) different by one nucleotide change were found in the ITS1 region. One strain of subset 1 was different from known B. bassiana strains by possessing 2 point mutations in the ITS region. RAPD-based clustering correlated to ITS sequence and colony morphology-based grouping of the strains. © 2010 Elsevier GmbH. Source


Dalinova A.A.,All Russian Institute for Plant Protection | Berestetskiy A.O.,All Russian Institute for Plant Protection
Mikologiya I Fitopatologiya | Year: 2014

Alternaria sonchi has been evaluated as a biocontrol agent against perennial sowthistle (Sonchus ar-vensis). In the frames of study on the fungal bioecology the research was focused on the characterization of infection process. Conidia of A. sonchi germinated within range of temperatures of 6-33 °C, while germ tubes grew at 12-33 °C. At the optimal temperature for growth of germ tubes (24 °C) their penetration into leaf tissues was found 4-8 h post inoculation. The fungus penetrated leaves directly via cuticle at the conjunction of epidermal cells. Fast death of the epidermal cells at the penetration sites obviously was the result of action of phytotoxic compounds produced by A. sonchi. The conidia germinated well on leaves of non-host plants (Cirsium arvense, Arabidopsis thaliana, and Elytrigia repens) however, their infection by the fungus was not occurred. Source

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