Sensibilidade de Metarhizium anisopliae à temperatura e umidade em três tipos de solos

Lanza, Lourenço Maurício; Monteiro, Ana Ruth Macêdo; Malheiros, Euclides Braga

doi:10.1590/s0103-84782009000100002

Cited by 7 publications

(5 citation statements)

References 19 publications

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“…This observation tends to counter the more typical hypothesis that younger/smaller immature insects are more susceptible to biological control agents (Yokoyama et al 1998). Our experiments did not directly evaluate this hypothesis because numerous environmental factors likely influenced fungal growth (Lanza et al 2009, Garrido-Jurado et al 2011) and subsequent levels of larval exposures to the fungus in field plots. Improved control of larger larvae, as we observed, may be a result of favorable environmental conditions (soil temperatures and/or availability of moisture) for the late season application that supports growth and survival of the fungus.…”

Section: Discussionmentioning

confidence: 76%

Evaluation ofMetarhizium brunneumF52 (Hypocreales: Clavicipitaceae) for Control of Japanese Beetle Larvae in Turfgrass

et al. 2015

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Experimental and commercial preparations of Metarhizium brunneum (Petch) strain F52 were evaluated for control of Japanese beetle, Popillia japonica Newman (Coleoptera: Scarbaeidae), larvae (white grubs) in the laboratory and under field conditions. Experimental preparations consisted of granule and liquid formulations made using in vitro produced microsclerotia, which are intended to produce infective conidial spores after application. These formulations were compared against commercial insecticides (imidacloprid and trichlorfon), and commercial formulations of M. brunneum F52 (Met 52) containing only conidia. Field-collected grubs were susceptible to infection in a dosage-dependent relationship when exposed to potting soil treated with experimental microsclerotia granules in the laboratory. The LC 50 for field-collected larvae was 14.2 mg of granules per cup ($15 g granules/m 2 ). Field plots treated with experimental and commercial formulations of M. brunneum F52 after 10 September (targeting second and third instar grubs) had significantly lower grub densities compared with untreated plots, providing 38.6-69.2% control, which sometimes equaled levels of control with chemical insecticides. Fungal treatments made prior to 21 August provided 14.3-69.3% control, although grub densities resulting from these treatments were often not significantly lower than those in untreated control plots. By comparison, chemical insecticide treatments provide 68-100% grub control, often providing better control when applied earlier in the season. In conclusion, P. japonica larvae are susceptible to infection by M. brunneum, and grub densities were reduced most consistently by fall applications targeting later instars.

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Section: Discussionmentioning

confidence: 76%

Evaluation ofMetarhizium brunneumF52 (Hypocreales: Clavicipitaceae) for Control of Japanese Beetle Larvae in Turfgrass

et al. 2015

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“…Similarly, Gaugler et al (1989) found that a high level of Colorado potato beetle (Leptinotarsa decemlineata, Say) mycosis only occurred after soil irrigation. However, studies on the impact of soil moisture on conidia viability and mycosis have produced contradictory results (Lingg & Donaldson, 1981;Studdert & Kaya, 1990;Hallsworth & Magan, 1995;Lanza et al, 2009;Cossentine et al, 2010). Studdert and Kaya (1990) showed a significant increase in Spodoptera exigua (Hübner) pupal mycosis by B. bassiana (strain ABG 6178) at water potentials of -37 to -200 bar compared with -0.3 to -15 bar.…”

Section: Apple Sawfly Mortality In Fieldmentioning

confidence: 99%

Soil application of Beauveria bassiana GHA against apple sawfly, Hoplocampa testudinea (Hymenoptera: Tenthredinidae): Field mortality and fungal persistence

et al. 2015

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Low impact alternatives to synthetic insecticides for the control of apple sawfly (Hoplocampa testudinea Klug) are scarce encumbering pest management in organic apple orchards. We investigated the soil persistence and field efficacy of the entomopathogenic fungus Beauveria bassiana (Balsamo) Vuillemin (BotaniGard) against apple sawfly under common organic orchard practices. We also assessed the efficacy of B. bassiana GHA and Metarhizium brunneum Petch (indigenous strain) against sawfly in the laboratory. Larvae treated with either fungus in the laboratory died faster than control larvae and displayed 49.4%-68.4% mycosis. In the field, B. bassiana density remained high in the week after application, during larval descent to the soil. Fungal density decreased to 25% at 49 d after application and to 0.4% after 55 weeks. Molecular markers revealed that the majority of fungal isolates recovered comprised the applied B. bassiana strain GHA. Larvae pupating in soil cages in the orchard for 49 d displayed 17% mycosis. The high efficacy under laboratory conditions was not seen in the field. B. bassiana application resulted in densities above the upper natural background level during the growing season, but reversion to background levels occurred within a year. It remains to be investigated whether this has a detrimental effect on nontarget organisms. Additional work is needed to bridge the knowledge gap between laboratory and field efficacy in orchards.

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“…al., 2001Baratto, 2005). A temperatura ótima de cultivo do fungo Metarhizium anisopliae é de 28°C (Dortas e Arcas, 1998;Pollar, 2005 exposto a temperaturas acima e abaixo de suas condições ótimas tem sua esporulação reduzida (Keyser et al 2014, Lanza et al, 2009). …”

Section: Introductionunclassified

INFLUÊNCIA DA CARGA DE SUBSTRATO NA ESPORULAÇÃO DO FUNGO Metarhizium anisopliae EM EMBALAGENS PLÁSTICAS

Homma¹,

Cunha²,

Thoméo³

2017

Blucher Chemical Engineering Proceedings

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RESUMO -Este trabalho teve como objetivo analisar a influência da carga de substrato, sendo arroz tipo 1, na esporulação do fungo Metarhizium anisopliae em embalagens plásticas. Com objetivo de otimizar e gerar economia no processo de produção de esporos do fungo realizou -se teste em embalagens plásticas de polipropileno com diferentes cargas e com tamanhos diferentes das embalagens. Observou -se com os resultados obtidos que é possível produzir esporos em embalagens plásticas com altos níveis de cargas, porém com embalagens apropriadas e de tamanho ideal para fornecer aeração e evitar constipação das embalagens. INTRODUÇÃOA substituição ou diminuição no uso de agrotóxicos na agricultura por uso de fungos entomopatogênico vêm se tornando cada vez mais comum. A substituição ou troca vem ocorrendo pois a sociedade tem buscado cada vez mais alimentos saudáveis sem a adição de agrotóxicos e pela ótima eficiência de mortandade das pragas (Almeida e Batista Filho, 2001; Frazzon et al., 2000;Lacey et al. 2015). Existem muitos fungos que são utilizados como bioinseticidas como: Metarhizium anisopliae, Metarhizium flavoride e Beauveria bassiana que tem apresentado êxito no combate de cigarrinha da cana-de-açúcar Mahanarva posticata e M. fimbriolata, dos gafanhotos Schistocerca pallens, Stiphra robusta e Rhammatocerus schistocercoides, da broca-do-café Hypothenemus hampei e os cupins-de-montículo e da cana-de-açúcar, os cupins do gênero Cornitermes (Valicente, 2009).No Brasil o uso do fungo Metarhizium anisopliae teve inicio a mais de 50 anos para combater a cigarrinha da folha da cana-de-açúcar, praga comum neste tipo de cultura e com a proibição das queimadas ocorrendo o aumento no corte mecanizado da cana-de-açúcar, favorecendo o seu aumento (Almeida e Batista Filho, 2001; Loureiro et al., 2012; Ottati-deLima, 2007).Define -se o fungo Metarhizium anisopliae como filamentoso entomopatogênico e acaricida (Hu et. al., 2002;Wang et al., 2016; Driver et. al., 2000, Liu et. al., 2001 Baratto, 2005). A temperatura ótima de cultivo do fungo Metarhizium anisopliae é de 28°C (Dortas e Arcas, 1998; Pollar, 2005). Vários autores realizaram diversos testes para verificar a interferência da temperatura na esporulação, no qual pode -se observar que quando o fungo é

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Sensibilidade de Metarhizium anisopliae à temperatura e umidade em três tipos de solos

Cited by 7 publications

References 19 publications

Evaluation ofMetarhizium brunneumF52 (Hypocreales: Clavicipitaceae) for Control of Japanese Beetle Larvae in Turfgrass

Evaluation ofMetarhizium brunneumF52 (Hypocreales: Clavicipitaceae) for Control of Japanese Beetle Larvae in Turfgrass

Soil application of Beauveria bassiana GHA against apple sawfly, Hoplocampa testudinea (Hymenoptera: Tenthredinidae): Field mortality and fungal persistence

INFLUÊNCIA DA CARGA DE SUBSTRATO NA ESPORULAÇÃO DO FUNGO Metarhizium anisopliae EM EMBALAGENS PLÁSTICAS

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