Wood-associated fungi produce volatile organic compounds toxic to root-knot nematode

Detalhes bibliográficos
Autor(a) principal: Pimenta, Lívia
Data de Publicação: 2017
Outros Autores: Ferreira, Maria Alves, Pedroso, Marcio Pozzobon, Campos, Vicente Paulo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Scientia Agrícola (Online)
Texto Completo: https://www.revistas.usp.br/sa/article/view/132798
Resumo: Since volatiles do not leave residues in food and cause low toxicity to humans, they can act as a skeleton for new nematicidal molecules, once they have demonstrated activity against phytonematodes. The aim of this study was to evaluate the effect of volatile organic compounds (VOCs) released by wood-associated fungi on controling second-stage juveniles (J2) of Meloidogyne incognita. All 28 wood-associated fungi isolates produced VOCs which caused in excess of 76 % immobility in exposed J2 of M. incognita. The fungus isolate VOCs also caused significant mortality compared to control when J2 were exposed to them. After 6 h of exposure, the fungus species Epicoccum nigrum and Schizophyllum commune produced VOCs that immobilized exposed J2 compounds, in relation to the control. When J2 were inoculated into tomato under greenhouse conditions, the M. incognita infectivity and reproduction were reduced by exposure to the VOCs. Volatiles produced by most of the fungi isolates and analyzed by gas chromatograph coupled to a mass spectrometer (CG-MS), included alcohols, esters, terpenes, and ketones. Certain compounds appeared only in S. commune or in E. nigrum suggesting their involvement in the high level of damage caused to nematode reproduction on tomato. Volatiles emitted by wood fungi demonstrated another mode of action of these microorganisms in nature.
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spelling Wood-associated fungi produce volatile organic compounds toxic to root-knot nematodeEpicoccum nigrumSchizophyllum communeroot nematodeschromatographycontrolSince volatiles do not leave residues in food and cause low toxicity to humans, they can act as a skeleton for new nematicidal molecules, once they have demonstrated activity against phytonematodes. The aim of this study was to evaluate the effect of volatile organic compounds (VOCs) released by wood-associated fungi on controling second-stage juveniles (J2) of Meloidogyne incognita. All 28 wood-associated fungi isolates produced VOCs which caused in excess of 76 % immobility in exposed J2 of M. incognita. The fungus isolate VOCs also caused significant mortality compared to control when J2 were exposed to them. After 6 h of exposure, the fungus species Epicoccum nigrum and Schizophyllum commune produced VOCs that immobilized exposed J2 compounds, in relation to the control. When J2 were inoculated into tomato under greenhouse conditions, the M. incognita infectivity and reproduction were reduced by exposure to the VOCs. Volatiles produced by most of the fungi isolates and analyzed by gas chromatograph coupled to a mass spectrometer (CG-MS), included alcohols, esters, terpenes, and ketones. Certain compounds appeared only in S. commune or in E. nigrum suggesting their involvement in the high level of damage caused to nematode reproduction on tomato. Volatiles emitted by wood fungi demonstrated another mode of action of these microorganisms in nature.Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz2017-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/sa/article/view/13279810.1590/1678-992x-2015-0472Scientia Agricola; v. 74 n. 4 (2017); 303-310Scientia Agricola; Vol. 74 Núm. 4 (2017); 303-310Scientia Agricola; Vol. 74 No. 4 (2017); 303-3101678-992X0103-9016reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/sa/article/view/132798/128823Copyright (c) 2017 Scientia Agricolainfo:eu-repo/semantics/openAccessPimenta, LíviaFerreira, Maria AlvesPedroso, Marcio PozzobonCampos, Vicente Paulo2017-06-12T11:35:11Zoai:revistas.usp.br:article/132798Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2017-06-12T11:35:11Scientia Agrícola (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Wood-associated fungi produce volatile organic compounds toxic to root-knot nematode
title Wood-associated fungi produce volatile organic compounds toxic to root-knot nematode
spellingShingle Wood-associated fungi produce volatile organic compounds toxic to root-knot nematode
Pimenta, Lívia
Epicoccum nigrum
Schizophyllum commune
root nematodes
chromatography
control
title_short Wood-associated fungi produce volatile organic compounds toxic to root-knot nematode
title_full Wood-associated fungi produce volatile organic compounds toxic to root-knot nematode
title_fullStr Wood-associated fungi produce volatile organic compounds toxic to root-knot nematode
title_full_unstemmed Wood-associated fungi produce volatile organic compounds toxic to root-knot nematode
title_sort Wood-associated fungi produce volatile organic compounds toxic to root-knot nematode
author Pimenta, Lívia
author_facet Pimenta, Lívia
Ferreira, Maria Alves
Pedroso, Marcio Pozzobon
Campos, Vicente Paulo
author_role author
author2 Ferreira, Maria Alves
Pedroso, Marcio Pozzobon
Campos, Vicente Paulo
author2_role author
author
author
dc.contributor.author.fl_str_mv Pimenta, Lívia
Ferreira, Maria Alves
Pedroso, Marcio Pozzobon
Campos, Vicente Paulo
dc.subject.por.fl_str_mv Epicoccum nigrum
Schizophyllum commune
root nematodes
chromatography
control
topic Epicoccum nigrum
Schizophyllum commune
root nematodes
chromatography
control
description Since volatiles do not leave residues in food and cause low toxicity to humans, they can act as a skeleton for new nematicidal molecules, once they have demonstrated activity against phytonematodes. The aim of this study was to evaluate the effect of volatile organic compounds (VOCs) released by wood-associated fungi on controling second-stage juveniles (J2) of Meloidogyne incognita. All 28 wood-associated fungi isolates produced VOCs which caused in excess of 76 % immobility in exposed J2 of M. incognita. The fungus isolate VOCs also caused significant mortality compared to control when J2 were exposed to them. After 6 h of exposure, the fungus species Epicoccum nigrum and Schizophyllum commune produced VOCs that immobilized exposed J2 compounds, in relation to the control. When J2 were inoculated into tomato under greenhouse conditions, the M. incognita infectivity and reproduction were reduced by exposure to the VOCs. Volatiles produced by most of the fungi isolates and analyzed by gas chromatograph coupled to a mass spectrometer (CG-MS), included alcohols, esters, terpenes, and ketones. Certain compounds appeared only in S. commune or in E. nigrum suggesting their involvement in the high level of damage caused to nematode reproduction on tomato. Volatiles emitted by wood fungi demonstrated another mode of action of these microorganisms in nature.
publishDate 2017
dc.date.none.fl_str_mv 2017-08-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://www.revistas.usp.br/sa/article/view/132798
10.1590/1678-992x-2015-0472
url https://www.revistas.usp.br/sa/article/view/132798
identifier_str_mv 10.1590/1678-992x-2015-0472
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.revistas.usp.br/sa/article/view/132798/128823
dc.rights.driver.fl_str_mv Copyright (c) 2017 Scientia Agricola
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2017 Scientia Agricola
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
publisher.none.fl_str_mv Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
dc.source.none.fl_str_mv Scientia Agricola; v. 74 n. 4 (2017); 303-310
Scientia Agricola; Vol. 74 Núm. 4 (2017); 303-310
Scientia Agricola; Vol. 74 No. 4 (2017); 303-310
1678-992X
0103-9016
reponame:Scientia Agrícola (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Scientia Agrícola (Online)
collection Scientia Agrícola (Online)
repository.name.fl_str_mv Scientia Agrícola (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv scientia@usp.br||alleoni@usp.br
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