Compostos orgânicos voláteis de soro de leite no controle de Meloidogyne incognita

Detalhes bibliográficos
Autor(a) principal: Silva, Maysa Siqueira Gonçalves da
Data de Publicação: 2020
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/42516
Resumo: The efficacy of agro-industry discards in controlling phytomatomatoids has been proven. An example is whey, which consists of a disposal of dairy products. As this control operates in the field, it has not yet been fully understood, much less the role of volatile compounds in toxicity. In the present study, whey emissions caused high immobility to juveniles of the second stage (J2) of Meloidogyne incognita. In them were identified by gas chromatography coupled with mass spectrometry (GC-MS) 27 molecules belonging to the chemical groups: ester; alcohol and carboxylic acid. Among them, four were selected for efficiency tests against eggs and M. incognita J2. The compounds acetic acid, isovaleric acid, octanoic acid and ethyl octanoate had an average lethal concentration (LC50) of 192, 95, 236.08, 134.30, 226.10, respectively, at J2 of M. incognita. In an in vitro test, these molecules significantly reduced (P <0.01) the outbreak of J2 of M. incognita, with greater efficiency for the compounds ethyl octanoate and acetic acid, which caused a reduction of 88.7% and 84.7%, respectively, in negative control. These two compounds, when applied to the substrate infested with M. incognita eggs, reduced infectivity by 95.68 and 93.24% and reproduction by 99.34 e 92.73% compared to the negative control. The application of ethyl octanoate caused a reduction in the number of eggs to values similar (P <0.05) to the positive control (Basamid). The molecules ethyl octanoate and acetic acid showed good prospects as candidates for nematicides for agribusiness after further research.
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spelling Compostos orgânicos voláteis de soro de leite no controle de Meloidogyne incognitaBioprospecção de moléculasFumigaçãoMeloidogyne incognitaFitonematoides - ControleNematicidasBioprospecting of moleculesFumigationPhytonematoids - ControlNematicidesFitopatologiaThe efficacy of agro-industry discards in controlling phytomatomatoids has been proven. An example is whey, which consists of a disposal of dairy products. As this control operates in the field, it has not yet been fully understood, much less the role of volatile compounds in toxicity. In the present study, whey emissions caused high immobility to juveniles of the second stage (J2) of Meloidogyne incognita. In them were identified by gas chromatography coupled with mass spectrometry (GC-MS) 27 molecules belonging to the chemical groups: ester; alcohol and carboxylic acid. Among them, four were selected for efficiency tests against eggs and M. incognita J2. The compounds acetic acid, isovaleric acid, octanoic acid and ethyl octanoate had an average lethal concentration (LC50) of 192, 95, 236.08, 134.30, 226.10, respectively, at J2 of M. incognita. In an in vitro test, these molecules significantly reduced (P <0.01) the outbreak of J2 of M. incognita, with greater efficiency for the compounds ethyl octanoate and acetic acid, which caused a reduction of 88.7% and 84.7%, respectively, in negative control. These two compounds, when applied to the substrate infested with M. incognita eggs, reduced infectivity by 95.68 and 93.24% and reproduction by 99.34 e 92.73% compared to the negative control. The application of ethyl octanoate caused a reduction in the number of eggs to values similar (P <0.05) to the positive control (Basamid). The molecules ethyl octanoate and acetic acid showed good prospects as candidates for nematicides for agribusiness after further research.Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)Tem sido comprovada a eficácia dos descartes da agroindústria no controle de fitonematoides. Um exemplo é o soro de leite, que consiste em um descarte dos laticínios. Como este controle opera no campo, ainda não foi completamente entendido muito menos o papel dos compostos voláteis na toxidade. No presente trabalho as emissões do soro de leite causaram elevada imobilidade a juvenis de segundo estádio (J2) de Meloidogyne incognita. Nelas foram identificados por cromatografia gasosa acoplada à espectrometria de massa (GC-MS) 27 moléculas pertencentes aos grupos químicos: ester; álcool e ácido carboxílico. Dentre elas, foram selecionadas quatro para testes de eficiência contra ovos e J2 de M. incognita. Os compostos ácido acético, ácido isovalérico, ácido octanóico e octanoato de etila apresentaram concentração letal média (CL50) de 192, 95, 236,08, 134,30, 226,10, respectivamente, aos J2 de M. incognita. Em teste in vitro essas moléculas reduziram significativamente (P<0,01) a eclosão de J2 de M. incognita, com maior eficácia para os compostos octanoato de etila e ácido acético, que causaram redução de 88,7% e 84,7%, respectivamente, em relação ao controle negativo. Estes dois compostos, quando aplicados ao substrato infestado com ovos de M. incognita, reduziram a infectividade em 95,68 e 93,24% e reprodução em 99,34 e 92,73% comparada ao controle negativo. A aplicação de octanoato de etila causou redução no número de ovos a valores similares (P<0,05) ao controle positivo (Basamid). As moléculas octanoato de etila e ácido acético apresentaram perspectivas boas como candidatas a nematicidas para o agronegócio após novas pesquisas.Universidade Federal de LavrasPrograma de Pós-Graduação em Agronomia/FitopatologiaUFLAbrasilDepartamento de FitopatologiaCampos, Vicente PauloPedros, Marcio PozzobonFreire, Eduardo SouzaSilva, Maysa Siqueira Gonçalves da2020-08-21T13:06:20Z2020-08-21T13:06:20Z2020-08-212020-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfSILVA, M. S. G. Compostos orgânicos voláteis de soro de leite no controle de Meloidogyne incognita. 2020. 34 p. Dissertação (Mestrado em Agronomia/Fitopatologia) – Universidade Federal de Lavras, Lavras, 2020.http://repositorio.ufla.br/jspui/handle/1/42516porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLA2023-05-11T19:28:22Zoai:localhost:1/42516Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-05-11T19:28:22Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Compostos orgânicos voláteis de soro de leite no controle de Meloidogyne incognita
title Compostos orgânicos voláteis de soro de leite no controle de Meloidogyne incognita
spellingShingle Compostos orgânicos voláteis de soro de leite no controle de Meloidogyne incognita
Silva, Maysa Siqueira Gonçalves da
Bioprospecção de moléculas
Fumigação
Meloidogyne incognita
Fitonematoides - Controle
Nematicidas
Bioprospecting of molecules
Fumigation
Phytonematoids - Control
Nematicides
Fitopatologia
title_short Compostos orgânicos voláteis de soro de leite no controle de Meloidogyne incognita
title_full Compostos orgânicos voláteis de soro de leite no controle de Meloidogyne incognita
title_fullStr Compostos orgânicos voláteis de soro de leite no controle de Meloidogyne incognita
title_full_unstemmed Compostos orgânicos voláteis de soro de leite no controle de Meloidogyne incognita
title_sort Compostos orgânicos voláteis de soro de leite no controle de Meloidogyne incognita
author Silva, Maysa Siqueira Gonçalves da
author_facet Silva, Maysa Siqueira Gonçalves da
author_role author
dc.contributor.none.fl_str_mv Campos, Vicente Paulo
Pedros, Marcio Pozzobon
Freire, Eduardo Souza
dc.contributor.author.fl_str_mv Silva, Maysa Siqueira Gonçalves da
dc.subject.por.fl_str_mv Bioprospecção de moléculas
Fumigação
Meloidogyne incognita
Fitonematoides - Controle
Nematicidas
Bioprospecting of molecules
Fumigation
Phytonematoids - Control
Nematicides
Fitopatologia
topic Bioprospecção de moléculas
Fumigação
Meloidogyne incognita
Fitonematoides - Controle
Nematicidas
Bioprospecting of molecules
Fumigation
Phytonematoids - Control
Nematicides
Fitopatologia
description The efficacy of agro-industry discards in controlling phytomatomatoids has been proven. An example is whey, which consists of a disposal of dairy products. As this control operates in the field, it has not yet been fully understood, much less the role of volatile compounds in toxicity. In the present study, whey emissions caused high immobility to juveniles of the second stage (J2) of Meloidogyne incognita. In them were identified by gas chromatography coupled with mass spectrometry (GC-MS) 27 molecules belonging to the chemical groups: ester; alcohol and carboxylic acid. Among them, four were selected for efficiency tests against eggs and M. incognita J2. The compounds acetic acid, isovaleric acid, octanoic acid and ethyl octanoate had an average lethal concentration (LC50) of 192, 95, 236.08, 134.30, 226.10, respectively, at J2 of M. incognita. In an in vitro test, these molecules significantly reduced (P <0.01) the outbreak of J2 of M. incognita, with greater efficiency for the compounds ethyl octanoate and acetic acid, which caused a reduction of 88.7% and 84.7%, respectively, in negative control. These two compounds, when applied to the substrate infested with M. incognita eggs, reduced infectivity by 95.68 and 93.24% and reproduction by 99.34 e 92.73% compared to the negative control. The application of ethyl octanoate caused a reduction in the number of eggs to values similar (P <0.05) to the positive control (Basamid). The molecules ethyl octanoate and acetic acid showed good prospects as candidates for nematicides for agribusiness after further research.
publishDate 2020
dc.date.none.fl_str_mv 2020-08-21T13:06:20Z
2020-08-21T13:06:20Z
2020-08-21
2020-07-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv SILVA, M. S. G. Compostos orgânicos voláteis de soro de leite no controle de Meloidogyne incognita. 2020. 34 p. Dissertação (Mestrado em Agronomia/Fitopatologia) – Universidade Federal de Lavras, Lavras, 2020.
http://repositorio.ufla.br/jspui/handle/1/42516
identifier_str_mv SILVA, M. S. G. Compostos orgânicos voláteis de soro de leite no controle de Meloidogyne incognita. 2020. 34 p. Dissertação (Mestrado em Agronomia/Fitopatologia) – Universidade Federal de Lavras, Lavras, 2020.
url http://repositorio.ufla.br/jspui/handle/1/42516
dc.language.iso.fl_str_mv por
language por
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Lavras
Programa de Pós-Graduação em Agronomia/Fitopatologia
UFLA
brasil
Departamento de Fitopatologia
publisher.none.fl_str_mv Universidade Federal de Lavras
Programa de Pós-Graduação em Agronomia/Fitopatologia
UFLA
brasil
Departamento de Fitopatologia
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv nivaldo@ufla.br || repositorio.biblioteca@ufla.br
_version_ 1815439156360249344

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