Levantamento de raças do agente causador do míldio da alface no Estado de São Paulo em 2012 e 2013
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/0100-5405/2057 http://hdl.handle.net/11449/172728 |
Resumo: | Lettuce is, among leafy vegetables, the most economically important one to Brazil. In the winter, at low temperatures and under leaf wetness, downy mildew of lettuce, a disease caused by the etiologic agent Bremia lactucae, occurs in almost all regions where this vegetable is grown and is considered one of the most severe foliar diseases for the culture. The aim of this study was to identify the races of B. lactucae in 2012 and 2013 that occurred in the main producing regions of São Paulo State, such as: Ribeirão Preto, Jaboticabal, Pirangi, Catanduva, São José do Rio Preto, Atibaia, Salesópolis, Biritiba Mirim, Mogi das Cruzes, Campinas, Itapira, Mogi Mirim, Cândido Mota, Presidente Prudente, Echaporã, Assis, Marilia, Botucatu and Bauru. During the months of July/August 2012 and 2013, we collected samples of lettuce leaves showing symptoms of downy mildew, and in each collected sample the pathogen structures referred to an isolate. The sporangia were multiplied on the susceptible cultivar Solaris, with subsequent inoculation in differential cultivars, performing evaluations on the 12th day from the appearance of the first sporulation in the susceptible cultivar ‘Green Tower’ (Dm-0), according to the code “Sextet”. In 2012, two new codes were determined, identifying two new races, SPBl:10 (63/31/02/00) and SPBl:11 (63/63/18/00). In 2013, a new codification was determined (63/31/18/00), to which the name SPBl:12 was proposed. The genes Dm-14 and Dm-15 and the resistance factors FR-17, FR-18, FR-36, FR-37 and FR-38 confer resistance to these new races that were identified. It is recommended, therefore, in breeding programs of lettuce, the use of factors FR-17, FR-18 and FR-38 as sources of resistance for new cultivars developed in the state of São Paulo, because they confer resistance to all 12 already identified races. |
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Levantamento de raças do agente causador do míldio da alface no Estado de São Paulo em 2012 e 2013Survey of races of the causal agent of downy mildew of lettuce in the state of São Paulo in 2012 and 2013Bremia lactucaeGenes DmLactuca sativa LResistance of plants to diseaseLettuce is, among leafy vegetables, the most economically important one to Brazil. In the winter, at low temperatures and under leaf wetness, downy mildew of lettuce, a disease caused by the etiologic agent Bremia lactucae, occurs in almost all regions where this vegetable is grown and is considered one of the most severe foliar diseases for the culture. The aim of this study was to identify the races of B. lactucae in 2012 and 2013 that occurred in the main producing regions of São Paulo State, such as: Ribeirão Preto, Jaboticabal, Pirangi, Catanduva, São José do Rio Preto, Atibaia, Salesópolis, Biritiba Mirim, Mogi das Cruzes, Campinas, Itapira, Mogi Mirim, Cândido Mota, Presidente Prudente, Echaporã, Assis, Marilia, Botucatu and Bauru. During the months of July/August 2012 and 2013, we collected samples of lettuce leaves showing symptoms of downy mildew, and in each collected sample the pathogen structures referred to an isolate. The sporangia were multiplied on the susceptible cultivar Solaris, with subsequent inoculation in differential cultivars, performing evaluations on the 12th day from the appearance of the first sporulation in the susceptible cultivar ‘Green Tower’ (Dm-0), according to the code “Sextet”. In 2012, two new codes were determined, identifying two new races, SPBl:10 (63/31/02/00) and SPBl:11 (63/63/18/00). In 2013, a new codification was determined (63/31/18/00), to which the name SPBl:12 was proposed. The genes Dm-14 and Dm-15 and the resistance factors FR-17, FR-18, FR-36, FR-37 and FR-38 confer resistance to these new races that were identified. It is recommended, therefore, in breeding programs of lettuce, the use of factors FR-17, FR-18 and FR-38 as sources of resistance for new cultivars developed in the state of São Paulo, because they confer resistance to all 12 already identified races.UNESP/FCAV-Departamento de Produção Vegetal, Via de Acesso Prof. Paulo Donato Castellane, s/nUNESP/FCAV-Departamento de Produção Vegetal, Via de Acesso Prof. Paulo Donato Castellane, s/nUniversidade Estadual Paulista (Unesp)de Nunes, Renata Castro [UNESP]Castoldi, Renata [UNESP]Gomes, Rafaelle Fazzi [UNESP]Tobar-Tosse, Dora Enith [UNESP]Braz, Leila Trevisan [UNESP]2018-12-11T17:01:56Z2018-12-11T17:01:56Z2016-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article53-58application/pdfhttp://dx.doi.org/10.1590/0100-5405/2057Summa Phytopathologica, v. 42, n. 1, p. 53-58, 2016.0100-5405http://hdl.handle.net/11449/17272810.1590/0100-5405/2057S0100-540520160001000532-s2.0-84961621922S0100-54052016000100053.pdf528674955869060Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporSumma Phytopathologica0,258info:eu-repo/semantics/openAccess2024-06-07T13:54:43Zoai:repositorio.unesp.br:11449/172728Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-06-07T13:54:43Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Levantamento de raças do agente causador do míldio da alface no Estado de São Paulo em 2012 e 2013 Survey of races of the causal agent of downy mildew of lettuce in the state of São Paulo in 2012 and 2013 |
title |
Levantamento de raças do agente causador do míldio da alface no Estado de São Paulo em 2012 e 2013 |
spellingShingle |
Levantamento de raças do agente causador do míldio da alface no Estado de São Paulo em 2012 e 2013 de Nunes, Renata Castro [UNESP] Bremia lactucae Genes Dm Lactuca sativa L Resistance of plants to disease |
title_short |
Levantamento de raças do agente causador do míldio da alface no Estado de São Paulo em 2012 e 2013 |
title_full |
Levantamento de raças do agente causador do míldio da alface no Estado de São Paulo em 2012 e 2013 |
title_fullStr |
Levantamento de raças do agente causador do míldio da alface no Estado de São Paulo em 2012 e 2013 |
title_full_unstemmed |
Levantamento de raças do agente causador do míldio da alface no Estado de São Paulo em 2012 e 2013 |
title_sort |
Levantamento de raças do agente causador do míldio da alface no Estado de São Paulo em 2012 e 2013 |
author |
de Nunes, Renata Castro [UNESP] |
author_facet |
de Nunes, Renata Castro [UNESP] Castoldi, Renata [UNESP] Gomes, Rafaelle Fazzi [UNESP] Tobar-Tosse, Dora Enith [UNESP] Braz, Leila Trevisan [UNESP] |
author_role |
author |
author2 |
Castoldi, Renata [UNESP] Gomes, Rafaelle Fazzi [UNESP] Tobar-Tosse, Dora Enith [UNESP] Braz, Leila Trevisan [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
de Nunes, Renata Castro [UNESP] Castoldi, Renata [UNESP] Gomes, Rafaelle Fazzi [UNESP] Tobar-Tosse, Dora Enith [UNESP] Braz, Leila Trevisan [UNESP] |
dc.subject.por.fl_str_mv |
Bremia lactucae Genes Dm Lactuca sativa L Resistance of plants to disease |
topic |
Bremia lactucae Genes Dm Lactuca sativa L Resistance of plants to disease |
description |
Lettuce is, among leafy vegetables, the most economically important one to Brazil. In the winter, at low temperatures and under leaf wetness, downy mildew of lettuce, a disease caused by the etiologic agent Bremia lactucae, occurs in almost all regions where this vegetable is grown and is considered one of the most severe foliar diseases for the culture. The aim of this study was to identify the races of B. lactucae in 2012 and 2013 that occurred in the main producing regions of São Paulo State, such as: Ribeirão Preto, Jaboticabal, Pirangi, Catanduva, São José do Rio Preto, Atibaia, Salesópolis, Biritiba Mirim, Mogi das Cruzes, Campinas, Itapira, Mogi Mirim, Cândido Mota, Presidente Prudente, Echaporã, Assis, Marilia, Botucatu and Bauru. During the months of July/August 2012 and 2013, we collected samples of lettuce leaves showing symptoms of downy mildew, and in each collected sample the pathogen structures referred to an isolate. The sporangia were multiplied on the susceptible cultivar Solaris, with subsequent inoculation in differential cultivars, performing evaluations on the 12th day from the appearance of the first sporulation in the susceptible cultivar ‘Green Tower’ (Dm-0), according to the code “Sextet”. In 2012, two new codes were determined, identifying two new races, SPBl:10 (63/31/02/00) and SPBl:11 (63/63/18/00). In 2013, a new codification was determined (63/31/18/00), to which the name SPBl:12 was proposed. The genes Dm-14 and Dm-15 and the resistance factors FR-17, FR-18, FR-36, FR-37 and FR-38 confer resistance to these new races that were identified. It is recommended, therefore, in breeding programs of lettuce, the use of factors FR-17, FR-18 and FR-38 as sources of resistance for new cultivars developed in the state of São Paulo, because they confer resistance to all 12 already identified races. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-01-01 2018-12-11T17:01:56Z 2018-12-11T17:01:56Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/0100-5405/2057 Summa Phytopathologica, v. 42, n. 1, p. 53-58, 2016. 0100-5405 http://hdl.handle.net/11449/172728 10.1590/0100-5405/2057 S0100-54052016000100053 2-s2.0-84961621922 S0100-54052016000100053.pdf 528674955869060 |
url |
http://dx.doi.org/10.1590/0100-5405/2057 http://hdl.handle.net/11449/172728 |
identifier_str_mv |
Summa Phytopathologica, v. 42, n. 1, p. 53-58, 2016. 0100-5405 10.1590/0100-5405/2057 S0100-54052016000100053 2-s2.0-84961621922 S0100-54052016000100053.pdf 528674955869060 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Summa Phytopathologica 0,258 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
53-58 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1803649364519813120 |