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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
02/12/2021 |
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Data da última atualização: |
26/04/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FARIA, M. R. de; SOUZA, D. A. de; SANCHES, M. M.; SCHMIDT, F. G. V.; OLIVEIRA, C. M. de; BENITO, N. P.; LOPES, R. B. |
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Afiliação: |
MARCOS RODRIGUES DE FARIA, Cenargen; DANIELA AGUIAR DE SOUZA, Cenargen; MARCIO MARTINELLO SANCHES, Cenargen; FRANCISCO GUILHERME V SCHMIDT, Cenargen; CHARLES MARTINS DE OLIVEIRA, CPAC; NORTON POLO BENITO, Cenargen; ROGERIO BIAGGIONI LOPES, Cenargen. |
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Título: |
Evaluation of key parameters for developing a Metarhizium rileyi-based biopesticide against Spodoptera frugiperda (Lepidoptera: Noctuidae) in maize: laboratory, greenhouse, and field trials. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Pest Management Science, 2021. |
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DOI: |
10.1002/ps.6729. |
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Idioma: |
Português |
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Notas: |
Na publicação: Marcos Faria; Daniela Aguiar Souza; Francisco Guilherme Vergolino Schmidt. |
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Conteúdo: |
Background: The entomopathogenic fungus Metarhizium rileyi is well known to cause natural infections in some caterpillars. In this multiyear study, we carried out lab, greenhouse and three field trials with the aim of developing a sustainable option for control of the fall armyworm (FAW) in maize. Association of Metarhizium rileyi with Spodoptera frugiperda baculovirus (SfMNPV) and delivery strategies were also investigated in this study.
Results: The selected isolate (CG381) was effective in the lab at a low concentration (ca. 4 × 103 conidia.cm-2 ), killing more than 95% of FAW larvae within 8 days. In the greenhouse assay, applications of conidia suspended in water or as dry powder in maize whorls (ca. 6.3 × 106 conidia per plant) produced similar larval mortalities (88-96%). In the field trials, conventional spraying of unformulated conidia (0.6 and 1.2 × 1012 conidia.ha-1 ) caused low larval mortalities (27-31%). Simultaneous application of either unformulated or oil-based formulations of M. rileyi conidia and S. frugiperda baculovirus (SfMNPV) to plant rows caused larval mortalities comparable to each of the pathogens applied alone. However, when a formulation containing both pathogens was sprayed directly into the whorls, the overall mortality of S. frugiperda larvae due to pathogens (mostly to M. rileyi infections) reached ca. 59%, two-fold higher than the other treatments with conventional spraying, whereas in the control the overall mortality was only 1%.
Conclusion: Optimizing exposure of S. frugiperda larvae to inoculum of virulent entomopathogens through directed applications to maize whorls is critical to produce satisfactory mortality levels and is promising for integrated pest management. MenosBackground: The entomopathogenic fungus Metarhizium rileyi is well known to cause natural infections in some caterpillars. In this multiyear study, we carried out lab, greenhouse and three field trials with the aim of developing a sustainable option for control of the fall armyworm (FAW) in maize. Association of Metarhizium rileyi with Spodoptera frugiperda baculovirus (SfMNPV) and delivery strategies were also investigated in this study.
Results: The selected isolate (CG381) was effective in the lab at a low concentration (ca. 4 × 103 conidia.cm-2 ), killing more than 95% of FAW larvae within 8 days. In the greenhouse assay, applications of conidia suspended in water or as dry powder in maize whorls (ca. 6.3 × 106 conidia per plant) produced similar larval mortalities (88-96%). In the field trials, conventional spraying of unformulated conidia (0.6 and 1.2 × 1012 conidia.ha-1 ) caused low larval mortalities (27-31%). Simultaneous application of either unformulated or oil-based formulations of M. rileyi conidia and S. frugiperda baculovirus (SfMNPV) to plant rows caused larval mortalities comparable to each of the pathogens applied alone. However, when a formulation containing both pathogens was sprayed directly into the whorls, the overall mortality of S. frugiperda larvae due to pathogens (mostly to M. rileyi infections) reached ca. 59%, two-fold higher than the other treatments with conventional spraying, whereas in the control the overall mortality was only 1%.
Conclus... Mostrar Tudo |
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Palavras-Chave: |
Biocontrol; Mycopesticide. |
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Thesaurus Nal: |
Biological control; Entomopathogens; Pest control. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02697naa a2200277 a 4500
001 2137014
005 2022-04-26
008 2021 bl uuuu u00u1 u #d
024 7 $a10.1002/ps.6729.$2DOI
100 1 $aFARIA, M. R. de
245 $aEvaluation of key parameters for developing a Metarhizium rileyi-based biopesticide against Spodoptera frugiperda (Lepidoptera$bNoctuidae) in maize: laboratory, greenhouse, and field trials.$h[electronic resource]
260 $c2021
500 $aNa publicação: Marcos Faria; Daniela Aguiar Souza; Francisco Guilherme Vergolino Schmidt.
520 $aBackground: The entomopathogenic fungus Metarhizium rileyi is well known to cause natural infections in some caterpillars. In this multiyear study, we carried out lab, greenhouse and three field trials with the aim of developing a sustainable option for control of the fall armyworm (FAW) in maize. Association of Metarhizium rileyi with Spodoptera frugiperda baculovirus (SfMNPV) and delivery strategies were also investigated in this study. Results: The selected isolate (CG381) was effective in the lab at a low concentration (ca. 4 × 103 conidia.cm-2 ), killing more than 95% of FAW larvae within 8 days. In the greenhouse assay, applications of conidia suspended in water or as dry powder in maize whorls (ca. 6.3 × 106 conidia per plant) produced similar larval mortalities (88-96%). In the field trials, conventional spraying of unformulated conidia (0.6 and 1.2 × 1012 conidia.ha-1 ) caused low larval mortalities (27-31%). Simultaneous application of either unformulated or oil-based formulations of M. rileyi conidia and S. frugiperda baculovirus (SfMNPV) to plant rows caused larval mortalities comparable to each of the pathogens applied alone. However, when a formulation containing both pathogens was sprayed directly into the whorls, the overall mortality of S. frugiperda larvae due to pathogens (mostly to M. rileyi infections) reached ca. 59%, two-fold higher than the other treatments with conventional spraying, whereas in the control the overall mortality was only 1%. Conclusion: Optimizing exposure of S. frugiperda larvae to inoculum of virulent entomopathogens through directed applications to maize whorls is critical to produce satisfactory mortality levels and is promising for integrated pest management.
650 $aBiological control
650 $aEntomopathogens
650 $aPest control
653 $aBiocontrol
653 $aMycopesticide
700 1 $aSOUZA, D. A. de
700 1 $aSANCHES, M. M.
700 1 $aSCHMIDT, F. G. V.
700 1 $aOLIVEIRA, C. M. de
700 1 $aBENITO, N. P.
700 1 $aLOPES, R. B.
773 $tPest Management Science, 2021.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
17/04/2012 |
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Data da última atualização: |
17/04/2012 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
PEREIRA, G. S.; PADILHA, L.; VON PINHO, E. V. R.; TEIXEIRA, R. de K. S.; CARVALHO, C. H. S. de; MALUF, M. P.; CARVALHO, B. L. de. |
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Afiliação: |
GABRIELLA SANTOS PEREIRA, Universidade Federal de Lavras; LILIAN PADILHA, SAPC; EDILA VILELA RESENDE VON PINHO, Universidade Federal de Lavras; RITA DE KÁSSIA SIQUEIRA TEIXEIRA, Universidade Federal de Lavras; CARLOS HENRIQUE S DE CARVALHO, SAPC; MIRIAN PEREZ MALUF, SAPC; BRUNA LINE DE CARVALHO, Universidade Federal de Lavras. |
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Título: |
Microsatellite markers in analysis of resistance to coffee leaf miner in Arabica coffee. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Pesquisa agropecuária Brasileira, Brasília, v.46, n.12, p.1650-1656, dez. 2011 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to analyze coffee (Coffea arabica) genotypes resistant to the coffee leaf miner (Leucoptera coffeella) using microsatellite markers. Sixty-six loci were evaluated, of which 63 were obtained from the Brazilian Coffee Expressed Sequence Tag (EST) database. These loci were amplified in bulks of individuals from F5 progenies of 'Siriema' (C. arabica x C. racemosa) resistant and susceptible to the insect, in eight samples of C. racemosa, and in a F6 population of 'Siriema' with 91 individuals segregating for resistance to the leaf miner. Polymorphisms were verified for two simple sequence repeat (SSR) loci in bulks of the susceptible progenies. The two polymorphic alleles were present in around 70% of the susceptible genotypes in F5 and in approximately 90% of the susceptible individuals in F6. However, the polymorphic EST-SSR markers among populations contrasting for resistance to leaf miner were not correlated to the evaluated characteristics. SSR markers show inter- and intraspecific polymorphism in C. arabica and C. racemosa. |
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Palavras-Chave: |
EST-SSR; Genotypes. |
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Thesagro: |
Coffea Arábica; Leucoptera Coffeella. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/54595/1/46n12a10.pdf
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Marc: |
LEADER 01810naa a2200241 a 4500
001 1922449
005 2012-04-17
008 2011 bl uuuu u00u1 u #d
100 1 $aPEREIRA, G. S.
245 $aMicrosatellite markers in analysis of resistance to coffee leaf miner in Arabica coffee.$h[electronic resource]
260 $c2011
520 $aThe objective of this work was to analyze coffee (Coffea arabica) genotypes resistant to the coffee leaf miner (Leucoptera coffeella) using microsatellite markers. Sixty-six loci were evaluated, of which 63 were obtained from the Brazilian Coffee Expressed Sequence Tag (EST) database. These loci were amplified in bulks of individuals from F5 progenies of 'Siriema' (C. arabica x C. racemosa) resistant and susceptible to the insect, in eight samples of C. racemosa, and in a F6 population of 'Siriema' with 91 individuals segregating for resistance to the leaf miner. Polymorphisms were verified for two simple sequence repeat (SSR) loci in bulks of the susceptible progenies. The two polymorphic alleles were present in around 70% of the susceptible genotypes in F5 and in approximately 90% of the susceptible individuals in F6. However, the polymorphic EST-SSR markers among populations contrasting for resistance to leaf miner were not correlated to the evaluated characteristics. SSR markers show inter- and intraspecific polymorphism in C. arabica and C. racemosa.
650 $aCoffea Arábica
650 $aLeucoptera Coffeella
653 $aEST-SSR
653 $aGenotypes
700 1 $aPADILHA, L.
700 1 $aVON PINHO, E. V. R.
700 1 $aTEIXEIRA, R. de K. S.
700 1 $aCARVALHO, C. H. S. de
700 1 $aMALUF, M. P.
700 1 $aCARVALHO, B. L. de
773 $tPesquisa agropecuária Brasileira, Brasília$gv.46, n.12, p.1650-1656, dez. 2011
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