Greenhouse Screening of the Saprophytic Resident Microflora for Control of Leaf Spots of Wheat (Triticum aestivum)

Autores
Perelló, Analía; Simón, María Rosa; Arambarri, A.M.; Cordo, Cristina Alicia
Año de publicación
2001
Idioma
inglés
Tipo de recurso
artículo
Estado
versión enviada
Descripción
Ten microorganisms of the epiphytic microflora of wheat leaves in Buenos Aires Province, Argentina, were evaluated under greenhouse conditions as potential biocontrol agents of the pathogensAlternaria triticimaculans, Bipolaris sorokiniana, Drechslera tritici-repentisandSeptoria triticiin two application sequences (prior to or together with the pathogens). The antagonists significantly reduced the expression of the diseases on wheat plants compared with control plants not inoculated with the antagonists. Maximum percentage of reduction of the necrotic lesion area (NLA) (40–55%) ofS. triticiresulted whenCryptococcussp.,Rhodotorula rubraandPenicillium lilacinwnwere sprayed on leaves prior to inoculations with the pathogen.Bacillussp.,Cryptococcussp.,Fusarium moniliformevar.anthophylium,P. lilacinumandR. rubrareduced significantly (34–52%) the NLA ofB. sorokinianain both of the application sequences. The best antagonistic effect againstA. triticimaculanswas shown byAspergillus niger, Bacillussp.,Chaetomium globosum, F. moniliformevar.anthophyliumandNigrospora sphaerica, with a NLA reduction from 21% to 35% in the co-inoculation or in the sequential application. All microorganisms exceptN. sphaericaperformed better than the control againstD. tritici-repentis. The area under disease progress curve (AUDPC) of the pathogens appeared to progress similarly, but at lower values, in treated plants than in untreated controls. The two yeasts and the bacteria decreased AUDPC to 50–55% ofS. triticiandB. sorokinianacompared with the control in both application sequences, whereas the maximum efficacy againstA. triticimaculanswas reached byN. sphaericaandA. nigerfor the sequential application and byF. moniliformevar.anthophyliumfor the co-inoculation. If the parasitism occurs also in nature, application of antagonists for biological control might provide the opportunity to compete with the pathogens and regulate their colonization in wheat leaves.
Materia
Ciencias Naturales y Exactas
biological control
wheat
foliar pathogens
phylloplane
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/4.0/
Repositorio
CIC Digital (CICBA)
Institución
Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
OAI Identificador
oai:digital.cic.gba.gob.ar:11746/5864

id CICBA_0a7f1110642f1bfbca60001e7ff92b58
oai_identifier_str oai:digital.cic.gba.gob.ar:11746/5864
network_acronym_str CICBA
repository_id_str 9441
network_name_str CIC Digital (CICBA)
spelling Greenhouse Screening of the Saprophytic Resident Microflora for Control of Leaf Spots of Wheat (Triticum aestivum)Perelló, AnalíaSimón, María RosaArambarri, A.M.Cordo, Cristina AliciaCiencias Naturales y Exactasbiological controlwheatfoliar pathogensphylloplaneTen microorganisms of the epiphytic microflora of wheat leaves in Buenos Aires Province, Argentina, were evaluated under greenhouse conditions as potential biocontrol agents of the pathogens<em>Alternaria triticimaculans, Bipolaris sorokiniana, Drechslera tritici-repentis</em>and<em>Septoria tritici</em>in two application sequences (prior to or together with the pathogens). The antagonists significantly reduced the expression of the diseases on wheat plants compared with control plants not inoculated with the antagonists. Maximum percentage of reduction of the necrotic lesion area (NLA) (40–55%) of<em>S. tritici</em>resulted when<em>Cryptococcus</em>sp.,<em>Rhodotorula rubra</em>and<em>Penicillium lilacinwn</em>were sprayed on leaves prior to inoculations with the pathogen.<em>Bacillus</em>sp.,<em>Cryptococcus</em>sp.,<em>Fusarium moniliforme</em>var.<em>anthophylium</em>,<em>P. lilacinum</em>and<em>R. rubra</em>reduced significantly (34–52%) the NLA of<em>B. sorokiniana</em>in both of the application sequences. The best antagonistic effect against<em>A. triticimaculans</em>was shown by<em>Aspergillus niger, Bacillus</em>sp.,<em>Chaetomium globosum, F. moniliforme</em>var.<em>anthophylium</em>and<em>Nigrospora sphaerica</em>, with a NLA reduction from 21% to 35% in the co-inoculation or in the sequential application. All microorganisms except<em>N. sphaerica</em>performed better than the control against<em>D. tritici-repentis</em>. The area under disease progress curve (AUDPC) of the pathogens appeared to progress similarly, but at lower values, in treated plants than in untreated controls. The two yeasts and the bacteria decreased AUDPC to 50–55% of<em>S. tritici</em>and<em>B. sorokiniana</em>compared with the control in both application sequences, whereas the maximum efficacy against<em>A. triticimaculans</em>was reached by<em>N. sphaerica</em>and<em>A. niger</em>for the sequential application and by<em>F. moniliforme</em>var.<em>anthophylium</em>for the co-inoculation. If the parasitism occurs also in nature, application of antagonists for biological control might provide the opportunity to compete with the pathogens and regulate their colonization in wheat leaves.2001info:eu-repo/semantics/articleinfo:eu-repo/semantics/submittedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://digital.cic.gba.gob.ar/handle/11746/5864enginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/reponame:CIC Digital (CICBA)instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Airesinstacron:CICBA2025-09-29T13:39:47Zoai:digital.cic.gba.gob.ar:11746/5864Institucionalhttp://digital.cic.gba.gob.arOrganismo científico-tecnológicoNo correspondehttp://digital.cic.gba.gob.ar/oai/snrdmarisa.degiusti@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:94412025-09-29 13:39:48.044CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Airesfalse
dc.title.none.fl_str_mv Greenhouse Screening of the Saprophytic Resident Microflora for Control of Leaf Spots of Wheat (Triticum aestivum)
title Greenhouse Screening of the Saprophytic Resident Microflora for Control of Leaf Spots of Wheat (Triticum aestivum)
spellingShingle Greenhouse Screening of the Saprophytic Resident Microflora for Control of Leaf Spots of Wheat (Triticum aestivum)
Perelló, Analía
Ciencias Naturales y Exactas
biological control
wheat
foliar pathogens
phylloplane
title_short Greenhouse Screening of the Saprophytic Resident Microflora for Control of Leaf Spots of Wheat (Triticum aestivum)
title_full Greenhouse Screening of the Saprophytic Resident Microflora for Control of Leaf Spots of Wheat (Triticum aestivum)
title_fullStr Greenhouse Screening of the Saprophytic Resident Microflora for Control of Leaf Spots of Wheat (Triticum aestivum)
title_full_unstemmed Greenhouse Screening of the Saprophytic Resident Microflora for Control of Leaf Spots of Wheat (Triticum aestivum)
title_sort Greenhouse Screening of the Saprophytic Resident Microflora for Control of Leaf Spots of Wheat (Triticum aestivum)
dc.creator.none.fl_str_mv Perelló, Analía
Simón, María Rosa
Arambarri, A.M.
Cordo, Cristina Alicia
author Perelló, Analía
author_facet Perelló, Analía
Simón, María Rosa
Arambarri, A.M.
Cordo, Cristina Alicia
author_role author
author2 Simón, María Rosa
Arambarri, A.M.
Cordo, Cristina Alicia
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales y Exactas
biological control
wheat
foliar pathogens
phylloplane
topic Ciencias Naturales y Exactas
biological control
wheat
foliar pathogens
phylloplane
dc.description.none.fl_txt_mv Ten microorganisms of the epiphytic microflora of wheat leaves in Buenos Aires Province, Argentina, were evaluated under greenhouse conditions as potential biocontrol agents of the pathogens<em>Alternaria triticimaculans, Bipolaris sorokiniana, Drechslera tritici-repentis</em>and<em>Septoria tritici</em>in two application sequences (prior to or together with the pathogens). The antagonists significantly reduced the expression of the diseases on wheat plants compared with control plants not inoculated with the antagonists. Maximum percentage of reduction of the necrotic lesion area (NLA) (40–55%) of<em>S. tritici</em>resulted when<em>Cryptococcus</em>sp.,<em>Rhodotorula rubra</em>and<em>Penicillium lilacinwn</em>were sprayed on leaves prior to inoculations with the pathogen.<em>Bacillus</em>sp.,<em>Cryptococcus</em>sp.,<em>Fusarium moniliforme</em>var.<em>anthophylium</em>,<em>P. lilacinum</em>and<em>R. rubra</em>reduced significantly (34–52%) the NLA of<em>B. sorokiniana</em>in both of the application sequences. The best antagonistic effect against<em>A. triticimaculans</em>was shown by<em>Aspergillus niger, Bacillus</em>sp.,<em>Chaetomium globosum, F. moniliforme</em>var.<em>anthophylium</em>and<em>Nigrospora sphaerica</em>, with a NLA reduction from 21% to 35% in the co-inoculation or in the sequential application. All microorganisms except<em>N. sphaerica</em>performed better than the control against<em>D. tritici-repentis</em>. The area under disease progress curve (AUDPC) of the pathogens appeared to progress similarly, but at lower values, in treated plants than in untreated controls. The two yeasts and the bacteria decreased AUDPC to 50–55% of<em>S. tritici</em>and<em>B. sorokiniana</em>compared with the control in both application sequences, whereas the maximum efficacy against<em>A. triticimaculans</em>was reached by<em>N. sphaerica</em>and<em>A. niger</em>for the sequential application and by<em>F. moniliforme</em>var.<em>anthophylium</em>for the co-inoculation. If the parasitism occurs also in nature, application of antagonists for biological control might provide the opportunity to compete with the pathogens and regulate their colonization in wheat leaves.
description Ten microorganisms of the epiphytic microflora of wheat leaves in Buenos Aires Province, Argentina, were evaluated under greenhouse conditions as potential biocontrol agents of the pathogens<em>Alternaria triticimaculans, Bipolaris sorokiniana, Drechslera tritici-repentis</em>and<em>Septoria tritici</em>in two application sequences (prior to or together with the pathogens). The antagonists significantly reduced the expression of the diseases on wheat plants compared with control plants not inoculated with the antagonists. Maximum percentage of reduction of the necrotic lesion area (NLA) (40–55%) of<em>S. tritici</em>resulted when<em>Cryptococcus</em>sp.,<em>Rhodotorula rubra</em>and<em>Penicillium lilacinwn</em>were sprayed on leaves prior to inoculations with the pathogen.<em>Bacillus</em>sp.,<em>Cryptococcus</em>sp.,<em>Fusarium moniliforme</em>var.<em>anthophylium</em>,<em>P. lilacinum</em>and<em>R. rubra</em>reduced significantly (34–52%) the NLA of<em>B. sorokiniana</em>in both of the application sequences. The best antagonistic effect against<em>A. triticimaculans</em>was shown by<em>Aspergillus niger, Bacillus</em>sp.,<em>Chaetomium globosum, F. moniliforme</em>var.<em>anthophylium</em>and<em>Nigrospora sphaerica</em>, with a NLA reduction from 21% to 35% in the co-inoculation or in the sequential application. All microorganisms except<em>N. sphaerica</em>performed better than the control against<em>D. tritici-repentis</em>. The area under disease progress curve (AUDPC) of the pathogens appeared to progress similarly, but at lower values, in treated plants than in untreated controls. The two yeasts and the bacteria decreased AUDPC to 50–55% of<em>S. tritici</em>and<em>B. sorokiniana</em>compared with the control in both application sequences, whereas the maximum efficacy against<em>A. triticimaculans</em>was reached by<em>N. sphaerica</em>and<em>A. niger</em>for the sequential application and by<em>F. moniliforme</em>var.<em>anthophylium</em>for the co-inoculation. If the parasitism occurs also in nature, application of antagonists for biological control might provide the opportunity to compete with the pathogens and regulate their colonization in wheat leaves.
publishDate 2001
dc.date.none.fl_str_mv 2001
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/submittedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv https://digital.cic.gba.gob.ar/handle/11746/5864
url https://digital.cic.gba.gob.ar/handle/11746/5864
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:CIC Digital (CICBA)
instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
instacron:CICBA
reponame_str CIC Digital (CICBA)
collection CIC Digital (CICBA)
instname_str Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
instacron_str CICBA
institution CICBA
repository.name.fl_str_mv CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
repository.mail.fl_str_mv marisa.degiusti@sedici.unlp.edu.ar
_version_ 1844618576826204160
score 13.070432