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| 3. |  | PAULA, K. R.; HIGA, A. R.; HIGA, R. C. V.; DEDECEC, R. A.; SIMON, A. A.; BEHING, M. Fatores que afetam a produção de sementes de Acacia Mearnsii de Wild. In: JORNADAS DE MEJORAMIENTO GENÉTICO PARA PRODUCTORES FORESTALES, 2004, Posadas. Actas. [Eldorado]: Universidad Nacional de Misiones, Facultad de Ciencias Forestales, 2004. p. 107. Resumo.| Biblioteca(s): Embrapa Florestas. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Hortaliças. Para informações adicionais entre em contato com cnph.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Hortaliças; Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
22/07/2020 |
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Data da última atualização: |
07/12/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
CABRAL, C. S.; GONÇALVES, A. M.; FONSECA, M. E. N.; URBEN, A. F.; COSTA, H.; LOURENÇO JUNIOR, V.; BOITEUX, L. S.; REIS, A. |
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Afiliação: |
C. S. CABRAL, UNIVERSIDADE DE BRASÍLIA; A. M. GONÇALVES, UNIVERSIDADE DE BRASÍLIA; MARIA ESTHER DE N FONSECA BOITEUX, CNPH; ARAILDE FONTES URBEN, Cenargen; H. COSTA, INCAPER; VALDIR LOURENCO JUNIOR, CNPH; LEONARDO SILVA BOITEUX, CNPH; AILTON REIS, CNPH. |
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Título: |
First detection of Fusarium oxysporum f. sp. radicis-lycopersici across major tomato-producing regions in Brazil. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Phytoparasitica, v. 48, p. 545-553, 2020. |
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DOI: |
https://doi.org/10.1007/s12600-020-00824-5 |
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Idioma: |
Inglês |
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Conteúdo: |
Fusarium oxysporum f. sp. lycopersici (FOL) races 1 and 2 were, up to recent years, the only pathogenic Fusaria associated with tomatoes (Solanum lycopersicum L.) in Brazil. However, recent outbreaks of F. oxysporum isolates with the ability to breakdown the I?2-mediated resistance prompted us to conduct nationwide surveys of the pathogens associated with vascular wilt of tomatoes. During these surveys, eight atypical F. oxysporum isolates (collected across five tomato?producing Brazilian states) displayed a peculiar ability of infecting accessions carrying the I?3 and I?7 genes (controlling resistance to FOL race 3 isolates). These observations suggested the involvement of either a new FOL race or of F. oxysporum f. sp. radicislycopersici (FORL) isolates. Koch?s postulates were fulfilled for these eight atypical isolates via root dipping inoculation (106 conidia mL− 1) of seedlings from two tomato cultivars ?Ponderosa? and Dominador?. All eight isolates induced crown-rot symptoms only in ?Ponderosa?, but not in ?Dominador? (which is resistant to FORL). To confirm the FORL identity, PCR assays were done using a set of race-specific and forma specialis-specific primers. A single amplicon of ≈947 bp was observed with the primer pair Sprl only with DNA template obtained from standard FORL isolates and from the eight atypical isolates, confirming the first detection of this forma specialis in Brazil. The geographical distribution of FORL isolates across major tomato?producing areas may require the incorporation of resistant factors into adapted cultivars. MenosFusarium oxysporum f. sp. lycopersici (FOL) races 1 and 2 were, up to recent years, the only pathogenic Fusaria associated with tomatoes (Solanum lycopersicum L.) in Brazil. However, recent outbreaks of F. oxysporum isolates with the ability to breakdown the I?2-mediated resistance prompted us to conduct nationwide surveys of the pathogens associated with vascular wilt of tomatoes. During these surveys, eight atypical F. oxysporum isolates (collected across five tomato?producing Brazilian states) displayed a peculiar ability of infecting accessions carrying the I?3 and I?7 genes (controlling resistance to FOL race 3 isolates). These observations suggested the involvement of either a new FOL race or of F. oxysporum f. sp. radicislycopersici (FORL) isolates. Koch?s postulates were fulfilled for these eight atypical isolates via root dipping inoculation (106 conidia mL− 1) of seedlings from two tomato cultivars ?Ponderosa? and Dominador?. All eight isolates induced crown-rot symptoms only in ?Ponderosa?, but not in ?Dominador? (which is resistant to FORL). To confirm the FORL identity, PCR assays were done using a set of race-specific and forma specialis-specific primers. A single amplicon of ≈947 bp was observed with the primer pair Sprl only with DNA template obtained from standard FORL isolates and from the eight atypical isolates, confirming the first detection of this forma specialis in Brazil. The geographical distribution of FORL isolates across major tomato?... Mostrar Tudo |
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Palavras-Chave: |
New disease; Soil-borne pathogen. |
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Thesagro: |
Doença de Planta. |
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Thesaurus NAL: |
Fusarium oxysporum f. sp. lycopersici; Soil-borne diseases; Solanum lycopersicum. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02495naa a2200289 a 4500
001 2127726
005 2020-12-07
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024 7 $ahttps://doi.org/10.1007/s12600-020-00824-5$2DOI
100 1 $aCABRAL, C. S.
245 $aFirst detection of Fusarium oxysporum f. sp. radicis-lycopersici across major tomato-producing regions in Brazil.$h[electronic resource]
260 $c2020
520 $aFusarium oxysporum f. sp. lycopersici (FOL) races 1 and 2 were, up to recent years, the only pathogenic Fusaria associated with tomatoes (Solanum lycopersicum L.) in Brazil. However, recent outbreaks of F. oxysporum isolates with the ability to breakdown the I?2-mediated resistance prompted us to conduct nationwide surveys of the pathogens associated with vascular wilt of tomatoes. During these surveys, eight atypical F. oxysporum isolates (collected across five tomato?producing Brazilian states) displayed a peculiar ability of infecting accessions carrying the I?3 and I?7 genes (controlling resistance to FOL race 3 isolates). These observations suggested the involvement of either a new FOL race or of F. oxysporum f. sp. radicislycopersici (FORL) isolates. Koch?s postulates were fulfilled for these eight atypical isolates via root dipping inoculation (106 conidia mL− 1) of seedlings from two tomato cultivars ?Ponderosa? and Dominador?. All eight isolates induced crown-rot symptoms only in ?Ponderosa?, but not in ?Dominador? (which is resistant to FORL). To confirm the FORL identity, PCR assays were done using a set of race-specific and forma specialis-specific primers. A single amplicon of ≈947 bp was observed with the primer pair Sprl only with DNA template obtained from standard FORL isolates and from the eight atypical isolates, confirming the first detection of this forma specialis in Brazil. The geographical distribution of FORL isolates across major tomato?producing areas may require the incorporation of resistant factors into adapted cultivars.
650 $aFusarium oxysporum f. sp. lycopersici
650 $aSoil-borne diseases
650 $aSolanum lycopersicum
650 $aDoença de Planta
653 $aNew disease
653 $aSoil-borne pathogen
700 1 $aGONÇALVES, A. M.
700 1 $aFONSECA, M. E. N.
700 1 $aURBEN, A. F.
700 1 $aCOSTA, H.
700 1 $aLOURENÇO JUNIOR, V.
700 1 $aBOITEUX, L. S.
700 1 $aREIS, A.
773 $tPhytoparasitica$gv. 48, p. 545-553, 2020.
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