Pyricularia blast on white oats: a new threat to wheat cultivation

Detalhes bibliográficos
Autor(a) principal: Marangoni,Mariana S.
Data de Publicação: 2013
Outros Autores: Nunes,Maria P., Fonseca Jr.,Nelson, Mehta,Yeshwant R.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Tropical plant pathology (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762013000300003
Resumo: A newly emerged disease, the Pyricularia blast caused by Pyricularia grisea, is commonly observed on wheat and black oats, since its discovery in 1985. Within a few years the disease spread to other species of Gramineae, but white oat cultivars remained resistant and were the only ones among cultivated cereals resistant to this disease. In 2012, one commercial field of white oat cultivar IAC 7 was found severely attacked by Pyricularia blast in Assis, in the state of São Paulo. The objective of the present investigation was to find out whether other white oat cultivars are also susceptible to the new P. grisea isolate from cv. IAC 7 and to determine the pathogenic variability, if any, among P. grisea isolates from black oats. Thirty-three white oat cultivars, along with some cultivars of black oat, barley, wheat, triticale, and rye were evaluated against the IAC 7 isolate. Results of disease severity analysis indicated that four white oat cultivars were resistant, seven were moderately resistant and the remaining were susceptible or highly susceptible. Five wheat cultivars were also resistant. Pathogenic variation among P. grisea isolates from black oats was observed.
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spelling Pyricularia blast on white oats: a new threat to wheat cultivationAvena sativaA. stigosaMagnaporthe griseaPyricularia griseaA newly emerged disease, the Pyricularia blast caused by Pyricularia grisea, is commonly observed on wheat and black oats, since its discovery in 1985. Within a few years the disease spread to other species of Gramineae, but white oat cultivars remained resistant and were the only ones among cultivated cereals resistant to this disease. In 2012, one commercial field of white oat cultivar IAC 7 was found severely attacked by Pyricularia blast in Assis, in the state of São Paulo. The objective of the present investigation was to find out whether other white oat cultivars are also susceptible to the new P. grisea isolate from cv. IAC 7 and to determine the pathogenic variability, if any, among P. grisea isolates from black oats. Thirty-three white oat cultivars, along with some cultivars of black oat, barley, wheat, triticale, and rye were evaluated against the IAC 7 isolate. Results of disease severity analysis indicated that four white oat cultivars were resistant, seven were moderately resistant and the remaining were susceptible or highly susceptible. Five wheat cultivars were also resistant. Pathogenic variation among P. grisea isolates from black oats was observed.Sociedade Brasileira de Fitopatologia2013-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762013000300003Tropical Plant Pathology v.38 n.3 2013reponame:Tropical plant pathology (Online)instname:Sociedade Brasileira de Fitopatologiainstacron:SBF10.1590/S1982-56762013005000004info:eu-repo/semantics/openAccessMarangoni,Mariana S.Nunes,Maria P.Fonseca Jr.,NelsonMehta,Yeshwant R.eng2013-06-24T00:00:00Zoai:scielo:S1982-56762013000300003Revistahttps://www.scielo.br/j/tpp/ONGhttps://old.scielo.br/oai/scielo-oai.phpsbf-revista@ufla.br1983-20521982-5676opendoar:2013-06-24T00:00Tropical plant pathology (Online) - Sociedade Brasileira de Fitopatologiafalse
dc.title.none.fl_str_mv Pyricularia blast on white oats: a new threat to wheat cultivation
title Pyricularia blast on white oats: a new threat to wheat cultivation
spellingShingle Pyricularia blast on white oats: a new threat to wheat cultivation
Marangoni,Mariana S.
Avena sativa
A. stigosa
Magnaporthe grisea
Pyricularia grisea
title_short Pyricularia blast on white oats: a new threat to wheat cultivation
title_full Pyricularia blast on white oats: a new threat to wheat cultivation
title_fullStr Pyricularia blast on white oats: a new threat to wheat cultivation
title_full_unstemmed Pyricularia blast on white oats: a new threat to wheat cultivation
title_sort Pyricularia blast on white oats: a new threat to wheat cultivation
author Marangoni,Mariana S.
author_facet Marangoni,Mariana S.
Nunes,Maria P.
Fonseca Jr.,Nelson
Mehta,Yeshwant R.
author_role author
author2 Nunes,Maria P.
Fonseca Jr.,Nelson
Mehta,Yeshwant R.
author2_role author
author
author
dc.contributor.author.fl_str_mv Marangoni,Mariana S.
Nunes,Maria P.
Fonseca Jr.,Nelson
Mehta,Yeshwant R.
dc.subject.por.fl_str_mv Avena sativa
A. stigosa
Magnaporthe grisea
Pyricularia grisea
topic Avena sativa
A. stigosa
Magnaporthe grisea
Pyricularia grisea
description A newly emerged disease, the Pyricularia blast caused by Pyricularia grisea, is commonly observed on wheat and black oats, since its discovery in 1985. Within a few years the disease spread to other species of Gramineae, but white oat cultivars remained resistant and were the only ones among cultivated cereals resistant to this disease. In 2012, one commercial field of white oat cultivar IAC 7 was found severely attacked by Pyricularia blast in Assis, in the state of São Paulo. The objective of the present investigation was to find out whether other white oat cultivars are also susceptible to the new P. grisea isolate from cv. IAC 7 and to determine the pathogenic variability, if any, among P. grisea isolates from black oats. Thirty-three white oat cultivars, along with some cultivars of black oat, barley, wheat, triticale, and rye were evaluated against the IAC 7 isolate. Results of disease severity analysis indicated that four white oat cultivars were resistant, seven were moderately resistant and the remaining were susceptible or highly susceptible. Five wheat cultivars were also resistant. Pathogenic variation among P. grisea isolates from black oats was observed.
publishDate 2013
dc.date.none.fl_str_mv 2013-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762013000300003
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762013000300003
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1982-56762013005000004
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 Fitopatologia
publisher.none.fl_str_mv Sociedade Brasileira de Fitopatologia
dc.source.none.fl_str_mv Tropical Plant Pathology v.38 n.3 2013
reponame:Tropical plant pathology (Online)
instname:Sociedade Brasileira de Fitopatologia
instacron:SBF
instname_str Sociedade Brasileira de Fitopatologia
instacron_str SBF
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reponame_str Tropical plant pathology (Online)
collection Tropical plant pathology (Online)
repository.name.fl_str_mv Tropical plant pathology (Online) - Sociedade Brasileira de Fitopatologia
repository.mail.fl_str_mv sbf-revista@ufla.br
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