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Tomilova OG, Kryukov VY, Kryukova NA, Tolokonnikova KP, Tokarev YS, Rumiantseva AS, Alekseev AA, Glupov VV. Effects of passages through an insect or a plant on virulence and physiological properties of the fungus Metarhizium robertsii. PeerJ 2023; 11:e15726. [PMID: 37583910 PMCID: PMC10424674 DOI: 10.7717/peerj.15726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 06/18/2023] [Indexed: 08/17/2023] Open
Abstract
Species of the genus Metarhizium are characterized by a multitrophic lifestyle of being arthropod parasites, rhizosphere colonizers, endophytes, and saprophytes. The process of adaptation to various organisms and substrates may lead to specific physiological alterations that can be elucidated by passaging through different hosts. Changes in virulence and cultivation properties of entomopathogenic fungi subcultured on different media or passaged through a live insect host are well known. Nevertheless, comparative in-depth physiological studies on fungi after passaging through insect or plant organisms are scarce. Here, virulence, plant colonization, hydrolytic enzymatic activities, toxin production, and antimicrobial action were compared between stable (nondegenerative) parent strain Metarhizium robertsii MB-1 and its reisolates obtained after eight passages through Galleria mellonella larvae or Solanum lycopersicum or after subculturing on the Sabouraud medium. The passaging through the insect caused similar physiological alterations relative to the plant-based passaging: elevation of destruxin A, B, and E production, a decrease in protease and lipase activities, and lowering of virulence toward G. mellonella and Leptinotarsa decemlineata as compared to the parent strain. The reisolates passaged through the insect or plant showed a slight trend toward increased tomato colonization and enhanced antagonistic action on tomato-associated bacterium Bacillus pumilus as compared to the parental strain. Meanwhile, the subculturing of MB-1 on the Sabouraud medium showed stability of the studied parameters, with minimal alterations relative to the parental strain. We propose that the fungal virulence factors are reprioritized during adaptation of M. robertsii to insects, plants, and media.
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Affiliation(s)
- Oksana G. Tomilova
- Institute of Systematics and Ecology of Animals SB RAS, Novosibirsk, Russia
- All-Russian Institute of Plant Protection, St. Petersburg, Russia
| | - Vadim Y. Kryukov
- Institute of Systematics and Ecology of Animals SB RAS, Novosibirsk, Russia
| | | | | | - Yuri S. Tokarev
- All-Russian Institute of Plant Protection, St. Petersburg, Russia
| | | | - Alexander A. Alekseev
- Institute of Systematics and Ecology of Animals SB RAS, Novosibirsk, Russia
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk, Russia
| | - Viktor V. Glupov
- Institute of Systematics and Ecology of Animals SB RAS, Novosibirsk, Russia
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Ashmarina LF, Lednev GR, Tomilova OG, Sadokhina TA, Bakshaev DY, Levchenko MV, Volkova NS, Tyurin MV, Danilov VP, Glupov VV. Erratum to: Effect of the Entomopathogenic Fungus Beauveria bassiana on the Development of Faba Bean (Vicia faba) Diseases in the Field Conditions. DOKL BIOCHEM BIOPHYS 2022; 502:45. [PMID: 35275306 DOI: 10.1134/s1607672922330018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 12/27/2021] [Accepted: 12/27/2021] [Indexed: 11/22/2022]
Affiliation(s)
- L F Ashmarina
- Federal Scientific Centre of Agro-BioTechnologies (SFSCA), Russian Academy of Sciences, Novosibirsk, Russia.
| | - G R Lednev
- All-Russian Institute of Plant Protection, St. Petersburg, Russia
| | - O G Tomilova
- Institute of Systematics and Ecology of Animals, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
| | - T A Sadokhina
- Federal Scientific Centre of Agro-BioTechnologies (SFSCA), Russian Academy of Sciences, Novosibirsk, Russia
| | - D Yu Bakshaev
- Federal Scientific Centre of Agro-BioTechnologies (SFSCA), Russian Academy of Sciences, Novosibirsk, Russia
| | - M V Levchenko
- All-Russian Institute of Plant Protection, St. Petersburg, Russia
| | - N S Volkova
- All-Russian Institute of Plant Protection, St. Petersburg, Russia
| | - M V Tyurin
- Institute of Systematics and Ecology of Animals, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
| | - V P Danilov
- Federal Scientific Centre of Agro-BioTechnologies (SFSCA), Russian Academy of Sciences, Novosibirsk, Russia
| | - V V Glupov
- Institute of Systematics and Ecology of Animals, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
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Ashmarina LF, Lednev GR, Tomilova OG, Sadokhina TA, Bakshaev DY, Levchenko MV, Volkova NS, Tyurin MV, Danilov VP, Glupov VV. Effect of the Entomopathogenic Fungus Beauveria bassiana on the Development of Faba Bean (Vicia faba) Diseases in the Field Conditions. DOKL BIOCHEM BIOPHYS 2021; 499:260-265. [PMID: 34426924 DOI: 10.1134/s1607672921040013] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 04/20/2021] [Accepted: 04/23/2021] [Indexed: 11/22/2022]
Abstract
Several ascomycetous entomopathogenic fungi, including species in the genera Beauveria, are plant symbionts/endophytes and are termed as endophytic insect-pathogenic fungi. It was shown that the fungus Beauveria bassiana (BBK-1 strain) successfully colonized Vicia faba bean plants in laboratory and field conditions of Western Siberia. The B. bassiana reisolate passed through the plants had significantly higher antagonistic activity against phytopathogens in comparison with the primary stem of entomopahogenic fungi. Pre-sowing faba bean seeds treatment reduced the level of infection of the seed material with phytopathogens, significantly decrease the development and prevalence of root rot disease. A decrease in the disease development index (chocolate spot, powdery mildew, fusariosis and other spots diseases) was found as a result of the use of B. bassiana. The effectiveness and prolonged action of B. bassiana on plants opens up new opportunities both in the creation of biological products and in molecular-genetic research and selection of certain pairs of plants and fungi based on the principle of the greatest synergy.
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Affiliation(s)
- L F Ashmarina
- Federal Scientific Centre of Agro-BioTechnologies (SFSCA), Russian Academy of Sciences, Novosibirsk, Russia.
| | - G R Lednev
- All-Russian Institute of Plant Protection, St. Petersburg, Russia
| | - O G Tomilova
- Institute of Systematics and Ecology of Animals, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
| | - T A Sadokhina
- Federal Scientific Centre of Agro-BioTechnologies (SFSCA), Russian Academy of Sciences, Novosibirsk, Russia
| | - D Yu Bakshaev
- Federal Scientific Centre of Agro-BioTechnologies (SFSCA), Russian Academy of Sciences, Novosibirsk, Russia
| | - M V Levchenko
- All-Russian Institute of Plant Protection, St. Petersburg, Russia
| | - N S Volkova
- All-Russian Institute of Plant Protection, St. Petersburg, Russia
| | - M V Tyurin
- Institute of Systematics and Ecology of Animals, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
| | - V P Danilov
- Federal Scientific Centre of Agro-BioTechnologies (SFSCA), Russian Academy of Sciences, Novosibirsk, Russia
| | - V V Glupov
- Institute of Systematics and Ecology of Animals, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
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Tyurin M, Kabilov MR, Smirnova N, Tomilova OG, Yaroslavtseva O, Alikina T, Glupov VV, Kryukov VY. Can Potato Plants Be Colonized with the Fungi Metarhizium and Beauveria under Their Natural Load in Agrosystems? Microorganisms 2021; 9:1373. [PMID: 34202827 PMCID: PMC8306205 DOI: 10.3390/microorganisms9071373] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/21/2021] [Accepted: 06/22/2021] [Indexed: 12/26/2022] Open
Abstract
Beauveria and Metarhizium fungi are facultative plant endophytes that provide plant growth-stimulating, immunomodulatory, and other beneficial effects. However, little is known about the level of plant colonization by these fungi under natural conditions. We assessed the endophytic colonization of potatoes (Solanum tuberosum) with entomopathogenic fungi at their natural load in soils (102-104 colony-forming units per g). Microbiological analyses of soils and plant organs, as well as a metagenomic analysis of potato roots and leaves, were conducted in three locations in Western Siberia, consisting of conventional agrosystems and kitchen gardens. The fungi were isolated at a relatively high frequency from unsterilized roots (up to 53% of Metarhizium-positive plants). However, the fungi were sparsely isolated from the internal tissues of roots, stems, and leaves (3%). Among the genus Metarhizium, two species, M. robertsii and M. brunneum, were detected in plants as well as in soils, and the first species was predominant. A metagenomic analysis of internal potato tissues showed a low relative abundance of Beauveria and Metarhizium (<0.3%), and the communities were represented primarily by phytopathogens. We suggest that colonization of the internal tissues of potatoes occurs sporadically under a natural load of entomopathogenic fungi in soils. The lack of stable colonization of potato plants with Beauveria and Metarhizium may be due to competition with phytopathogens.
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Affiliation(s)
- Maksim Tyurin
- Institute of Systematics and Ecology of Animals, Siberian Branch of the Russian Academy of Sciences, 630091 Novosibirsk, Russia; (O.G.T.); (O.Y.); (V.V.G.)
| | - Marsel R. Kabilov
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia; (M.R.K.); (T.A.)
| | - Natalia Smirnova
- Institute of Soil Science and Agrochemistry, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia;
| | - Oksana G. Tomilova
- Institute of Systematics and Ecology of Animals, Siberian Branch of the Russian Academy of Sciences, 630091 Novosibirsk, Russia; (O.G.T.); (O.Y.); (V.V.G.)
| | - Olga Yaroslavtseva
- Institute of Systematics and Ecology of Animals, Siberian Branch of the Russian Academy of Sciences, 630091 Novosibirsk, Russia; (O.G.T.); (O.Y.); (V.V.G.)
| | - Tatyana Alikina
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia; (M.R.K.); (T.A.)
| | - Viktor V. Glupov
- Institute of Systematics and Ecology of Animals, Siberian Branch of the Russian Academy of Sciences, 630091 Novosibirsk, Russia; (O.G.T.); (O.Y.); (V.V.G.)
| | - Vadim Yu Kryukov
- Institute of Systematics and Ecology of Animals, Siberian Branch of the Russian Academy of Sciences, 630091 Novosibirsk, Russia; (O.G.T.); (O.Y.); (V.V.G.)
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Tomilova OG, Shaldyaeva EM, Kryukova NA, Pilipova YV, Schmidt NS, Danilov VP, Kryukov VY, Glupov VV. Entomopathogenic fungi decrease Rhizoctonia disease in potato in field conditions. PeerJ 2020; 8:e9895. [PMID: 32995085 PMCID: PMC7501787 DOI: 10.7717/peerj.9895] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 08/17/2020] [Indexed: 11/20/2022] Open
Abstract
Rhizoctonia potato disease is widespread in the world and causes substantial yield and quality losses in potato. This study aimed to evaluate the efficacy of entomopathogenic fungi Metarhizium robertsii and Beauveria bassiana in the inhibition of potato Rhizoctonia complex disease. The efficacy of the entomopathogenic fungi M. robertsii and B. bassiana in the defense of potato against Rhizoctonia disease (stem cancer, black scrulf and other forms of manifestation on tubers) was estimated under field conditions in Western Siberia. Preplanting treatment of the tubers with B. bassiana decreased Rhizoctonia disease in the stems and stolons. At the same time, treatment with M. robertsii did not cause a decrease in Rhizoctonia disease in these organs. However, both fungi decreased the sclerotium index on the tubers of new crops. We demonstrated two mechanisms of inhibition of Rhizoctonia solani by M. robertsii and B. bassiana, including (1) direct effect, expressed as inhibition of R. solani sclerotium formation in cocultivation assays, and (2) indirect effect, which is associated with increased peroxidase activity in potato roots under the influence of colonization by entomopathogenic fungi. We suggest that the treatment of seed tubers with B. basiana can effectively manage Rhizoctonia disease during the plant vegetative season and that both fungi significantly improve the quality of the new tuber crop.
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Affiliation(s)
- Oksana G Tomilova
- Institute of Systematics and Ecology of Animals SB RAS, Novosibirsk, Russia
| | - Elena M Shaldyaeva
- Institute of Systematics and Ecology of Animals SB RAS, Novosibirsk, Russia.,Department of Plant Protection, Novosibirsk State Agrarian University, Novosibirsk, Russia
| | - Natalia A Kryukova
- Institute of Systematics and Ecology of Animals SB RAS, Novosibirsk, Russia
| | - Yulia V Pilipova
- Department of Plant Protection, Novosibirsk State Agrarian University, Novosibirsk, Russia
| | - Natalia S Schmidt
- Institute of Systematics and Ecology of Animals SB RAS, Novosibirsk, Russia
| | - Viktor P Danilov
- Federal Scientific Centre of Agro-BioTechnologies (SFSCA) of the RAS, Novosibirsk, Russia
| | - Vadim Y Kryukov
- Institute of Systematics and Ecology of Animals SB RAS, Novosibirsk, Russia
| | - Viktor V Glupov
- Institute of Systematics and Ecology of Animals SB RAS, Novosibirsk, Russia
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Kryukov VY, Kryukova NA, Tomilova OG, Vorontsova Y, Chertkova E, Pervushin AL, Slepneva I, Glupov VV, Yaroslavtseva ON. Comparative analysis of the immune response of the wax moth Galleria mellonella after infection with the fungi Cordyceps militaris and Metarhizium robertsii. Microb Pathog 2020; 141:103995. [DOI: 10.1016/j.micpath.2020.103995] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 01/18/2020] [Accepted: 01/21/2020] [Indexed: 11/16/2022]
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7
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Kryukov VY, Kabilov MR, Smirnova N, Tomilova OG, Tyurin MV, Akhanaev YB, Polenogova OV, Danilov VP, Zhangissina SK, Alikina T, Yaroslavtseva ON, Glupov VV. Bacterial decomposition of insects post-Metarhizium infection: Possible influence on plant growth. Fungal Biol 2019; 123:927-935. [PMID: 31733735 DOI: 10.1016/j.funbio.2019.09.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 09/24/2019] [Accepted: 09/30/2019] [Indexed: 12/26/2022]
Abstract
Strains of entomopathogenic fungi may have substantial differences in their final stages of mycosis. Insect cadavers are usually overgrown with mycelium after colonization of the insect body, but in many cases, bacterial decomposition of the colonized hosts occurs. We used two Metarhizium robertsii strains in the work: Mak-1 (cadavers become overgrown with mycelium and conidia) and P-72 (cadavers decay after fungal colonization). We conducted a comparative analysis of gut and cadaver microbiota in Colorado potato beetle larvae using 16S rRNA gene sequencing after infection with these strains. In addition, we estimated the content of different forms of nitrogen in cadavers and the influence of cadavers on the growth of Solanum lycopersicum on sand substrates under laboratory conditions. It was shown that infections did not lead to a significant shift in the midgut bacterial communities of infected insects compared to those of untreated insects. Importantly, bacterial communities were similar in both types of cadaver, with predominantly enterobacteria. Decomposing cadavers (P-72) were characterized by increased nitrate and ammonium, and they had a stronger growth-promoting effect on plants compared to cadavers overgrown with mycelium and conidia (Mak-1). We also estimated the colonization and growth of plants after treatment with conidia of both strains cultivated on artificial medium. Both cultures successfully colonized plants, but strain P-72 showed stronger growth promotion than Mak-1. We propose that the use of deviant strains that are unable to sporulate on cadavers leads to a faster (though only passive) flow of nitrogen from killed insects to plants.
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Affiliation(s)
- Vadim Y Kryukov
- Institute of Systematics and Ecology of Animals SB RAS, Frunze str., 11, 630091 Novosibirsk, Russia.
| | - Marsel R Kabilov
- Institute of Chemical Biology and Fundamental Medicine SB RAS, Lavrentiev av. 8, Novosibirsk 630090, Russia
| | - Natalya Smirnova
- Institute of Soil Science and Agrochemistry SB RAS, Lavrentiev av. 8/2, Novosibirsk 630090, Russia
| | - Oksana G Tomilova
- Institute of Systematics and Ecology of Animals SB RAS, Frunze str., 11, 630091 Novosibirsk, Russia
| | - Maksim V Tyurin
- Institute of Systematics and Ecology of Animals SB RAS, Frunze str., 11, 630091 Novosibirsk, Russia
| | - Yuriy B Akhanaev
- Institute of Systematics and Ecology of Animals SB RAS, Frunze str., 11, 630091 Novosibirsk, Russia
| | - Olga V Polenogova
- Institute of Systematics and Ecology of Animals SB RAS, Frunze str., 11, 630091 Novosibirsk, Russia
| | - Viktor P Danilov
- Siberian Federal Scientific Centre of Agro-Bio Technologies (SFSCA) of the RAS, Novosibirsk Region, Krasnoobsk, PO Box 463, 630501, Russia
| | - Saule K Zhangissina
- Institute of Cytology and Genetics SB RAS, Lavrentyev av. 10, Novosibirsk 630090, Russia
| | - Tatiana Alikina
- Institute of Soil Science and Agrochemistry SB RAS, Lavrentiev av. 8/2, Novosibirsk 630090, Russia
| | - Olga N Yaroslavtseva
- Institute of Systematics and Ecology of Animals SB RAS, Frunze str., 11, 630091 Novosibirsk, Russia
| | - Viktor V Glupov
- Institute of Systematics and Ecology of Animals SB RAS, Frunze str., 11, 630091 Novosibirsk, Russia
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Tomilova OG, Yaroslavtseva ON, Ganina MD, Tyurin MV, Chernyak EI, Senderskiy IV, Noskov YA, Polenogova OV, Akhanaev YB, Kryukov VY, Glupov VV, Morozov SV. Changes in antifungal defence systems during the intermoult period in the Colorado potato beetle. J Insect Physiol 2019; 116:106-117. [PMID: 31077710 DOI: 10.1016/j.jinsphys.2019.05.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 05/06/2019] [Accepted: 05/07/2019] [Indexed: 06/09/2023]
Abstract
Susceptibility to the fungus Metarhizium robertsii and changes in host defences were evaluated in different stages of the intermoult period (4-6 h, 34-36 h and 84-86 h post moult in IV larval instars) of the Colorado potato beetle. A significant thickening of the cuticle during larval growth was accompanied by decreases in cuticle melanization, phenoloxidase activity and epicuticular hydrocarbon contents (C28-C32). At the same time, a decrease in the conidial adhesion rate and an increase in resistance to the fungus were observed. In addition, we recorded significant elevation of the encapsulation rate and total haemocyte counts in the haemolymph during the specified period. The activity of detoxification enzymes decreased in the haemolymph but increased in the fat body during larval growth. No significant differences in the fatty acid content in the epicuticle were observed. The role of developmental disorders in susceptibility to entomopathogenic fungi is also discussed.
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Affiliation(s)
- Oksana G Tomilova
- Institute of Systematics and Ecology of Animals Siberian Branch of the Russian Academy of Sciences, st. Frunze 11, Novosibirsk 630091, Russia
| | - Olga N Yaroslavtseva
- Institute of Systematics and Ecology of Animals Siberian Branch of the Russian Academy of Sciences, st. Frunze 11, Novosibirsk 630091, Russia
| | - Mariya D Ganina
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Academician Lavrentyev Ave., 9, 630090, Russia
| | - Maksim V Tyurin
- Institute of Systematics and Ecology of Animals Siberian Branch of the Russian Academy of Sciences, st. Frunze 11, Novosibirsk 630091, Russia
| | - Elena I Chernyak
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Academician Lavrentyev Ave., 9, 630090, Russia
| | - Igor V Senderskiy
- All-Russia Institute of Plant Protection, sh. Podbel'skogo, 3, St. Petersburg - Pushkin, 196608, Russia
| | - Yury A Noskov
- Institute of Systematics and Ecology of Animals Siberian Branch of the Russian Academy of Sciences, st. Frunze 11, Novosibirsk 630091, Russia; Tomsk State University, st. Lenin, 36, Tomsk 634050, Russia
| | - Olga V Polenogova
- Institute of Systematics and Ecology of Animals Siberian Branch of the Russian Academy of Sciences, st. Frunze 11, Novosibirsk 630091, Russia
| | - Yuriy B Akhanaev
- Institute of Systematics and Ecology of Animals Siberian Branch of the Russian Academy of Sciences, st. Frunze 11, Novosibirsk 630091, Russia
| | - Vadim Yu Kryukov
- Institute of Systematics and Ecology of Animals Siberian Branch of the Russian Academy of Sciences, st. Frunze 11, Novosibirsk 630091, Russia.
| | - Viktor V Glupov
- Institute of Systematics and Ecology of Animals Siberian Branch of the Russian Academy of Sciences, st. Frunze 11, Novosibirsk 630091, Russia
| | - Sergey V Morozov
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Academician Lavrentyev Ave., 9, 630090, Russia
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Kryukov VY, Tomilova OG, Luzina OA, Yaroslavtseva ON, Akhanaev YB, Tyurin MV, Duisembekov BA, Salakhutdinov NF, Glupov VV. Effects of fluorine-containing usnic acid and fungus Beauveria bassiana on the survival and immune-physiological reactions of Colorado potato beetle larvae. Pest Manag Sci 2018; 74:598-606. [PMID: 28945317 DOI: 10.1002/ps.4741] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Revised: 08/10/2017] [Accepted: 09/19/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND The search for compounds that interact synergistically with entomopathogenic fungi is aimed at enhancing the efficacy and stability of biological products against pest insects, for example, against the Colorado potato beetle (CPB). We hypothesized that fluorine-containing derivatives of usnic acid (FUA) might be candidates for the development of multicomponent bio-insecticides. The aim of this study was to analyze the co-influence of FUA and Beauveria bassiana on the survival and immune-physiological reactions of CPB larvae. RESULTS Synergy between FUA and B. bassiana was observed after treatment of second, third and fourth larvae instars under laboratory conditions. Furthermore, synergy was observed in field trials in continental climate conditions in southeastern Kazakhstan. In a field experiment, the median lethal time was shortened three-fold, and cumulative mortality for 15 days increased by 36% in the combined treatment compared with a fungal infection alone. FUA treatment delayed larval development, decreased the total hemocyte count, and increased both the phenoloxidase activity in integuments and the detoxification enzyme rate in hemolymph. A combined treatment with fungus and FUA led to increases in the aforementioned changes. CONCLUSION Toxicosis caused by FUA provides a stable synergistic effect between FUA and B. bassiana. The combination can be promising for the development of highly efficient products against CPB. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Vadim Yu Kryukov
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Science, Novosibirsk, Russia
| | - Oksana G Tomilova
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Science, Novosibirsk, Russia
| | - Olga A Luzina
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Science, Novosibirsk, Russia
| | - Olga N Yaroslavtseva
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Science, Novosibirsk, Russia
| | - Yuriy B Akhanaev
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Science, Novosibirsk, Russia
| | - Maksim V Tyurin
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Science, Novosibirsk, Russia
| | | | - Nariman F Salakhutdinov
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Science, Novosibirsk, Russia
| | - Viktor V Glupov
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Science, Novosibirsk, Russia
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Tomilova OG, Kryukov VY, Duisembekov BA, Yaroslavtseva ON, Tyurin MV, Kryukova NA, Skorokhod V, Dubovskiy IM, Glupov VV. Immune-physiological aspects of synergy between avermectins and the entomopathogenic fungus Metarhizium robertsii in Colorado potato beetle larvae. J Invertebr Pathol 2016; 140:8-15. [PMID: 27546865 DOI: 10.1016/j.jip.2016.08.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 07/13/2016] [Accepted: 08/17/2016] [Indexed: 12/29/2022]
Abstract
The interaction between the entomopathogenic fungus Metarhizium robertsii and natural avermectin metabolites of the actinomycete Streptomyces avermitilis were investigated on Colorado potato beetle larvae. A synergy in the mortality of larvae was detected after simultaneous treatment with half-lethal doses of avermectins (commercial name actarophit) 0.005% and fungus (5×105conidia/ml). The treatment with avermectins led to rapid fungal colonization of the hemolymph. The defense strategies of insects infected by fungus and treated with avermectins and untreated insects were compared to investigate the mechanisms of this synergy. We have shown an increase in hemocytes, especially immunocompetent cells - plasmatocytes and granular cells in the initial stages of mycosis (third day post inoculation). In contrast, avermectins suppressed cellular immunity in hemolymph. Specifically, avermectins dramatically decreased the count of granular cells in larvae infected and uninfected with fungus. Apoptosis inducement and hemocyte necrosis under the influence of avermectins has been shown in vitro as one of the possible reasons for hemocyte mortality. In addition, avermectins enhanced the activity of phenoloxidases in integuments and hemolymph and increased the activity of glutathione-S-transferases activity in the fat body and hemolymph of infected and uninfected larvae, thereby intensifying the development of fungal infection by M. robertsii in Colorado potato beetle larvae. The combination of fungal infection and avermectins constitutes a new perspective for developing multicomponent bioinsecticides.
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Affiliation(s)
- Oksana G Tomilova
- Institute of Systematics and Ecology of Animals SB RAS, Novosibirsk, Russia.
| | - Vadim Yu Kryukov
- Institute of Systematics and Ecology of Animals SB RAS, Novosibirsk, Russia.
| | | | | | - Maksim V Tyurin
- Institute of Systematics and Ecology of Animals SB RAS, Novosibirsk, Russia.
| | - Natalia A Kryukova
- Institute of Systematics and Ecology of Animals SB RAS, Novosibirsk, Russia.
| | - Valery Skorokhod
- Plant Microbiological Synthesis Preparations «Enzim», Vinnitsa, Ukraine.
| | - Ivan M Dubovskiy
- Institute of Systematics and Ecology of Animals SB RAS, Novosibirsk, Russia.
| | - Viktor V Glupov
- Institute of Systematics and Ecology of Animals SB RAS, Novosibirsk, Russia.
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Tomilova OG, Shternshis MV. [Effect of a preparation from Chaetomium fungi on the growth of phytopathogenic fungi]. Prikl Biokhim Mikrobiol 2006; 42:76-80. [PMID: 16521581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
We studied the fungicidal activity of a biological preparation from the fungi of the genus Chaetomium against soil phytopathogenic fungi Rhizoctonia solani and Fusarium oxysporum. The inhibitory effect of the preparation under study depended on its concentration, duration of storage, and growth characteristics of pure cultures of the phytopathogens. The highest (98.8%) inhibitory activity was observed on day 3 of the interaction with Rhizoctonia solani. After a 2-year storage, this preparation was capable of inhibiting the growth of the phytopathogens only at high doses. The preparation precluded the development of bare patch and increased the productivity of potato plants. The preparation may serve as an alternative to chemical fungicides for plant protection.
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