REACTION OF PAPAYA GENOTYPES TO TARGET SPOT AND ACTIVITY OF PLANT EXTRACTS AND Bacillus spp. ON Corynespora cassiicola
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista brasileira de fruticultura (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000100405 |
Resumo: | ABSTRACT Papaya target-spot, caused by fungus Corynespora cassiicola presents a wide geographic distribution, causing leaf spots in several hosts. The aim of this research was to evaluate the behavior of papaya varieties and/or selections to the natural occurrence of target spot, and test the fungi toxic effect of neem, citronella and eucalyptus extracts, and fungi static effects of Bacillus isolates on the fungus C. cassiicola in vitro. To evaluate the natural occurrence of the disease in field, symptoms on leaves of 11 papaya varieties and/or selections have been assessed. The pathogenicity of isolates was verified by inoculation of plants in greenhouse. Neem, citronella and eucalyptus extracts were prepared at concentrations of 10, 15 and 20% and poured into Petri dishes containing C. cassiicola mycelium discs. For , Bacillusnine isolates were used, and the antagonistic potential was evaluated by the pairing of pathogen and isolate colonies by the circle method. Papaya varieties and/or selections presented all leaves with injury, and Canaan Sunrise Solo and Canaan Golden selections showed the greatest number of injuries per leaf, showing that papaya varieties and/or selections respond differently to the phytopathogen. All plant extracts tested showed inhibitory effect on the mycelial growth of C. cassiicola in vitro. Bacillus isolates showed an antagonistic potential on the mycelial growth of the fungus, with B. methylotrophicus (Iso 31 and Iso 41) being the most promising as a biological control agent. The results indicate that forms of alternative control of diseases are promising in the management of papaya target-spot. |
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REACTION OF PAPAYA GENOTYPES TO TARGET SPOT AND ACTIVITY OF PLANT EXTRACTS AND Bacillus spp. ON Corynespora cassiicolaCarica papaya L.Azadirachta indicaCymbopogon nardusBiocontroltarget spotABSTRACT Papaya target-spot, caused by fungus Corynespora cassiicola presents a wide geographic distribution, causing leaf spots in several hosts. The aim of this research was to evaluate the behavior of papaya varieties and/or selections to the natural occurrence of target spot, and test the fungi toxic effect of neem, citronella and eucalyptus extracts, and fungi static effects of Bacillus isolates on the fungus C. cassiicola in vitro. To evaluate the natural occurrence of the disease in field, symptoms on leaves of 11 papaya varieties and/or selections have been assessed. The pathogenicity of isolates was verified by inoculation of plants in greenhouse. Neem, citronella and eucalyptus extracts were prepared at concentrations of 10, 15 and 20% and poured into Petri dishes containing C. cassiicola mycelium discs. For , Bacillusnine isolates were used, and the antagonistic potential was evaluated by the pairing of pathogen and isolate colonies by the circle method. Papaya varieties and/or selections presented all leaves with injury, and Canaan Sunrise Solo and Canaan Golden selections showed the greatest number of injuries per leaf, showing that papaya varieties and/or selections respond differently to the phytopathogen. All plant extracts tested showed inhibitory effect on the mycelial growth of C. cassiicola in vitro. Bacillus isolates showed an antagonistic potential on the mycelial growth of the fungus, with B. methylotrophicus (Iso 31 and Iso 41) being the most promising as a biological control agent. The results indicate that forms of alternative control of diseases are promising in the management of papaya target-spot.Sociedade Brasileira de Fruticultura2018-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000100405Revista Brasileira de Fruticultura v.40 n.1 2018reponame:Revista brasileira de fruticultura (Online)instname:Sociedade Brasileira de Fruticultura (SBF)instacron:SBFRU10.1590/0100-29452018927info:eu-repo/semantics/openAccessPaz,Dannielle Silva DaAraujo,José Ribamar GusmãoRodrigues,Antônia Alice CostaSilva,Erlen Keila Candido eDiniz,Nathália Bandeiraeng2018-02-05T00:00:00Zoai:scielo:S0100-29452018000100405Revistahttp://www.scielo.br/rbfhttps://old.scielo.br/oai/scielo-oai.phprbf@fcav.unesp.br||http://rbf.org.br/1806-99670100-2945opendoar:2018-02-05T00:00Revista brasileira de fruticultura (Online) - Sociedade Brasileira de Fruticultura (SBF)false |
dc.title.none.fl_str_mv |
REACTION OF PAPAYA GENOTYPES TO TARGET SPOT AND ACTIVITY OF PLANT EXTRACTS AND Bacillus spp. ON Corynespora cassiicola |
title |
REACTION OF PAPAYA GENOTYPES TO TARGET SPOT AND ACTIVITY OF PLANT EXTRACTS AND Bacillus spp. ON Corynespora cassiicola |
spellingShingle |
REACTION OF PAPAYA GENOTYPES TO TARGET SPOT AND ACTIVITY OF PLANT EXTRACTS AND Bacillus spp. ON Corynespora cassiicola Paz,Dannielle Silva Da Carica papaya L. Azadirachta indica Cymbopogon nardus Biocontrol target spot |
title_short |
REACTION OF PAPAYA GENOTYPES TO TARGET SPOT AND ACTIVITY OF PLANT EXTRACTS AND Bacillus spp. ON Corynespora cassiicola |
title_full |
REACTION OF PAPAYA GENOTYPES TO TARGET SPOT AND ACTIVITY OF PLANT EXTRACTS AND Bacillus spp. ON Corynespora cassiicola |
title_fullStr |
REACTION OF PAPAYA GENOTYPES TO TARGET SPOT AND ACTIVITY OF PLANT EXTRACTS AND Bacillus spp. ON Corynespora cassiicola |
title_full_unstemmed |
REACTION OF PAPAYA GENOTYPES TO TARGET SPOT AND ACTIVITY OF PLANT EXTRACTS AND Bacillus spp. ON Corynespora cassiicola |
title_sort |
REACTION OF PAPAYA GENOTYPES TO TARGET SPOT AND ACTIVITY OF PLANT EXTRACTS AND Bacillus spp. ON Corynespora cassiicola |
author |
Paz,Dannielle Silva Da |
author_facet |
Paz,Dannielle Silva Da Araujo,José Ribamar Gusmão Rodrigues,Antônia Alice Costa Silva,Erlen Keila Candido e Diniz,Nathália Bandeira |
author_role |
author |
author2 |
Araujo,José Ribamar Gusmão Rodrigues,Antônia Alice Costa Silva,Erlen Keila Candido e Diniz,Nathália Bandeira |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Paz,Dannielle Silva Da Araujo,José Ribamar Gusmão Rodrigues,Antônia Alice Costa Silva,Erlen Keila Candido e Diniz,Nathália Bandeira |
dc.subject.por.fl_str_mv |
Carica papaya L. Azadirachta indica Cymbopogon nardus Biocontrol target spot |
topic |
Carica papaya L. Azadirachta indica Cymbopogon nardus Biocontrol target spot |
description |
ABSTRACT Papaya target-spot, caused by fungus Corynespora cassiicola presents a wide geographic distribution, causing leaf spots in several hosts. The aim of this research was to evaluate the behavior of papaya varieties and/or selections to the natural occurrence of target spot, and test the fungi toxic effect of neem, citronella and eucalyptus extracts, and fungi static effects of Bacillus isolates on the fungus C. cassiicola in vitro. To evaluate the natural occurrence of the disease in field, symptoms on leaves of 11 papaya varieties and/or selections have been assessed. The pathogenicity of isolates was verified by inoculation of plants in greenhouse. Neem, citronella and eucalyptus extracts were prepared at concentrations of 10, 15 and 20% and poured into Petri dishes containing C. cassiicola mycelium discs. For , Bacillusnine isolates were used, and the antagonistic potential was evaluated by the pairing of pathogen and isolate colonies by the circle method. Papaya varieties and/or selections presented all leaves with injury, and Canaan Sunrise Solo and Canaan Golden selections showed the greatest number of injuries per leaf, showing that papaya varieties and/or selections respond differently to the phytopathogen. All plant extracts tested showed inhibitory effect on the mycelial growth of C. cassiicola in vitro. Bacillus isolates showed an antagonistic potential on the mycelial growth of the fungus, with B. methylotrophicus (Iso 31 and Iso 41) being the most promising as a biological control agent. The results indicate that forms of alternative control of diseases are promising in the management of papaya target-spot. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000100405 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000100405 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0100-29452018927 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Fruticultura |
publisher.none.fl_str_mv |
Sociedade Brasileira de Fruticultura |
dc.source.none.fl_str_mv |
Revista Brasileira de Fruticultura v.40 n.1 2018 reponame:Revista brasileira de fruticultura (Online) instname:Sociedade Brasileira de Fruticultura (SBF) instacron:SBFRU |
instname_str |
Sociedade Brasileira de Fruticultura (SBF) |
instacron_str |
SBFRU |
institution |
SBFRU |
reponame_str |
Revista brasileira de fruticultura (Online) |
collection |
Revista brasileira de fruticultura (Online) |
repository.name.fl_str_mv |
Revista brasileira de fruticultura (Online) - Sociedade Brasileira de Fruticultura (SBF) |
repository.mail.fl_str_mv |
rbf@fcav.unesp.br||http://rbf.org.br/ |
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1752122494847811584 |