183 results match your criteria: "All Russian Institute of Plant Protection[Affiliation]"

The distribution of Eucnemidae (Coleoptera: Elateroidea) of Iran is summarized and an annotated checklist of the Iranian Eucnemidae is provided. A total of 16 species within 13 genera in four subfamilies of the family are listed.

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New data on the Palaearctic subgenus Holoclera Schiner of dance flies of the genus Rhamphomyia Meigen (Diptera: Empididae) are reported. Three new species are described: Rhamphomyia (Holoclera) richterae sp. nov.

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The genus Rhinoceromyia Grichanov gen. nov. is described from the tropical forest of southeastern Guinea to accommodate a new species, Rhinoceromyia dubrovskii Grichanov sp.

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Insects are poikilothermic organisms and temperature increase usually accelerates their development rates, population and distribution area growth. Therefore, it is assumed that global warming can be beneficial for the pests and other widespread species at least in the relatively cool temperate zones. However, climate change's effect on the widespread species in the Palearctic remains poorly studied.

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For the first time under laboratory conditions, the virulence of a unique cypovirus strain, DsCPV-1, which has broad host specificity, was tested on nontarget aquatic organisms (natural species: Gammarus lacustris, Anopheles messeae, Coenagrion lunulatum, Cloeon robusta, Chironomus sp., Ilyocoris cimicoides, and Plea minutissima; laboratory species: Aedes aegypti and Daphnia magna), a terrestrial pollinator species (Apis mellifera), and an entomophage (Podisus maculiventris). The probability of this virus's accumulation in the bodies of invertebrates and of its transmission along a trophic chain was evaluated by two approaches: bioassays and a molecular diagnostic analysis.

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The Siberian moth, Dendrolimus sibiricus is a dangerous forest defoliator, the number one pest of boreal forests in Asia. Search for effective and ecologically friendly control measures drives attention to microbial pathogens. Viruses and microsporidia are obligate intracellular parasites widespread in insect populations causing either chronic or acute infections.

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Article Synopsis
  • Spring bread wheat is a key crop in Russia and Kazakhstan, heavily impacted by rust pathogens like leaf, stem, and yellow rust.
  • A study tested 40 new wheat genotypes for their resistance to these rusts and identified several with significant resistance, including three that were resistant to all rust types.
  • Molecular analysis revealed both cataloged and uncataloged resistance genes, indicating improved resistance and genetic diversity in the new wheat genotypes due to the introduction of alien genetic material.
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Plant defense polypeptides play a crucial role in providing plants with constitutive immunity against various biotic and abiotic stressors. In this study, we explored a complex of proteins from wheatgrass () spikelets to estimate their role in the plant's tolerance to various environmental factors. The current research shows that in vitro protein extracts from spikelets possess antifungal activity against certain species, which are specific cereal pathogens, at concentrations of 1-2 mg/mL.

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Bioherbicides are expected to be a supplement to integrated pest management, assisting in the control of problematic weed species. For instance, bioherbicides (Phoma and BioPhoma) were recently registered in Canada and the USA for the control of some perennial dicotyledonous weeds in lawns. These products are based on strains of the fungus (syn.

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Delimitation of the widely distributed Palearctic species (Hemiptera, Heteroptera, Miridae): insights from molecular and morphological data.

Zookeys

August 2024

Zoological Institute, Russian Academy of Sciences, Universitetskaya nab. 1, St. Petersburg 199034, Russia Zoological Institute, Russian Academy of Sciences St. Petersburg Russia.

Species delimitation presents a significant challenge in biology, particularly in systematics. Here, an integrative approach is employed to assess the species boundaries of widely distributed Palearctic species. Due to their diversity, wide distribution, and the absence of comprehensive morphological and molecular data for most species, revising is both daunting and time-consuming.

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Most species are known as endophytes and/or phytopathogens of higher plants and have a worldwide distribution. Recently, information discovered with molecular tools has been also published about the presence of these fungi in the microbiome of truffle fruiting bodies. In the present work, we isolated and identified three strains from truffle fruiting bodies.

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Anticipatory wheat breeding for pathogen resistance is key to preventing economically significant crop losses caused by diseases. Recently, the harmfulness of a dangerous wheat disease, stem rust, caused by Puccinia graminis f. sp.

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is a large genus within Pleosporaceae and consists of fungi that have up to recently been considered to be 15 separate genera, including . The majority of species after incorporation into were placed in three sections: , and . In this study, phylogeny of 26 reference strains of 22 species and 20 Russian -like isolates was recovered.

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Storing up Treasures: Storage Potential of (Hemiptera: Heteroptera: Miridae) Nymphs for Application in Biological Control.

Insects

June 2024

European and Mediterranean Plant Protection Organization (EPPO/OEPP), 21 boulevard Richard Lenoir, 75011 Paris, France.

Long-term storage is an important component of insect mass-rearing systems, prolonging the shelf life of biocontrol agents during a low-demand period or a temporary lack of suitable food. is a predatory heteropteran, mass-reared and widely used for the biological control of arthropod pests in greenhouses. With the aim to determine the optimal conditions and acceptable duration of cold storage, we evaluated the impact of different periods of storage of fed and starved third instar nymphs of at different temperatures on nymphal survival, adult emergence, and female fecundity.

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Reactive oxygen species (ROS) are formed in plant cells continuously. When ROS production exceeds the antioxidant capacity of the cells, oxidative stress develops which causes damage of cell components and may even lead to the induction of programmed cell death (PCD). The levels of ROS production increase upon abiotic stress, but also during pathogen attack in response to elicitors, and upon application of toxic compounds such as synthetic herbicides or natural phytotoxins.

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Fungal 10-membered lactones (TMLs), such as stagonolide A, herbarumin I, pinolidoxin, and putaminoxin, are promising candidates for the development of nature-derived herbicides. The aim of this study was to analyze the structure-activity relationships (SAR) of C-9-methyl-substituted TMLs with a multitarget bioassay approach to reveal compounds with useful (phytotoxic, entomotoxic, antimicrobial) or undesirable (cytotoxic) bioactivities. A new TML, stagonolide L (), along with five known compounds (stagonolides D () and E (), curvulides A () and B/B (,), and pyrenolide C ()), were purified from cultures of the phytopathogenic fungus , and five semisynthetic derivatives of and (-) were obtained.

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Dry rot of potato tubers is a harmful disease caused by species of the genus. Studies on the composition and features of spp. that cause the disease in Russia are limited.

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The described Nearctic species of the genus Tachydromia Meigen, 1803 (Diptera: Hybotidae, Tachydromiinae) are revised. Seventeen described species are recognised. The following two new synonyms are proposed: Tachista lundstroemi Frey, 1913 (Eurasian species) = Tachydromia enecator Melander, 1902; Tachydromia hirtipes Melander, 1928 = Tachydromia schwarzii Coquillett, 1895.

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Two new genera and three new species of the tribe Trechini belonging to the Nannotrechus complex are described from the Caucasus and Crimea: Paracimmerites capitatus sp. n. from the vicinity of the Gtatshev Pass (Krasnodar Region), Titarenkites obovatus gen.

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Xyletinus (Xeronthobius) diaphanus sp. n. from southern Kazakhstan is described, illustrated, and compared with the known members of the subgenus.

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The Siberian moth, Tschetv., 1908 (Lepidoptera: Lasiocampidae) is a conifer pest that causes unprecedented forest mortality in Northern Asia, leading to enormous ecological and economic losses. This is the first study summarizing data on the parasitoid diversity and parasitism of this pest over the last 118 years (1905-2022).

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Microsporidia are a group of widespread eukaryotic spore-forming intracellular parasites of great economic and scientific importance. Since microsporidia cannot be cultured outside of a host cell, the search for new antimicrosporidian drugs requires an effective antiseptic to sterilize microsporidian spores to infect cell lines. Here, we show that a new polyhexamethylene guanidine derivative M250, which is active against fungi and bacteria at a concentration of 0.

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