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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Hortaliças. |
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Data corrente: |
26/10/2023 |
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Data da última atualização: |
26/10/2023 |
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Tipo da produção científica: |
Nota Técnica/Nota Científica |
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Autoria: |
BORGES, R. C. F.; FONSECA, M. E. N.; BOITEUX, L. S.; SANTOS, M. do D. M.; VELOSO, J. S.; AGUIAR, F. M.; REIS, A. |
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Afiliação: |
RAFAELA CRISTINA FERREIRA BORGES, UNIVERSIDADE DE BRASÍLIA; MARIA ESTHER DE N FONSECA BOITEUX, CNPH; LEONARDO SILVA BOITEUX, CNPH; MARIA DO DESTERRO MENDES SANTOS, UNIVERSIDADE DE BRASÍLIA; JOSIENE SILVA VELOSO, UNIVERSIDADE DE BRASÍLIA; FREDERICK MENDES AGUIAR, UNIVERSIDADE FEDERAL DE SÃO JOÃO DEL REI; AILTON REIS, CNPH. |
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Título: |
Powdery mildew of chayote (Sechium edule) caused by Podosphaera xanthii race 2 in Brazil |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Journal of Phytopathology, v. 171, p. 583-588, 2023. |
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DOI: |
DOI: 10.1111/jph.13211 |
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Idioma: |
Inglês |
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Conteúdo: |
The causal agent of chayote (Sechium edule) powdery mildew (PM) was identified in Brazil. Microscopic examinations revealed hyaline and ovoid conidia, borne in chains and displaying distinctive extra-vacuolar fibrosin bodies. Morphology agreed to the standard description of the anamorph of Podosphaera xanthii. To confirm this identification, genomic DNA was extracted from field isolates and used in PCR assays with ITS primers. Amplicons were Sanger-sequenced and the nucleotide alignments of all isolates displayed identity levels above 97% with P. xanthii isolates in GenBank database. Phylogenetic analyses indicated only P. xanthii isolates as the PM-inducing pathogens in chayote. Inoculation assays were performed using chayote, zucchini and a set of muskmelon differential cultigens for determination of the physiological races of P. xanthii. All chayote isolates were pathogenic to chayote and zucchini seedlings. Five isolates were also pathogenic to the muskmelon cultigens ?Hale's Best Jumbo?, ?Védrantais?, ?PMR-45? and ?Edisto 47?, whereas ?PMR-5? was asymptomatic during the experimental period. The virulence profile of chayote-infecting isolates allowed their classification as P. xanthii race 2. To the best of our knowledge, this is the first worldwide report of P. xanthii race 2 in chayote. This report has relevant epidemiological and disease management implications, allowing more sustainable chayote cultivation under tropical and subtropical conditions. |
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Thesagro: |
Chuchu; Oídio. |
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Thesaurus Nal: |
Sechium. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02171naa a2200241 a 4500
001 2157549
005 2023-10-26
008 2023 bl uuuu u00u1 u #d
024 7 $aDOI: 10.1111/jph.13211$2DOI
100 1 $aBORGES, R. C. F.
245 $aPowdery mildew of chayote (Sechium edule) caused by Podosphaera xanthii race 2 in Brazil$h[electronic resource]
260 $c2023
520 $aThe causal agent of chayote (Sechium edule) powdery mildew (PM) was identified in Brazil. Microscopic examinations revealed hyaline and ovoid conidia, borne in chains and displaying distinctive extra-vacuolar fibrosin bodies. Morphology agreed to the standard description of the anamorph of Podosphaera xanthii. To confirm this identification, genomic DNA was extracted from field isolates and used in PCR assays with ITS primers. Amplicons were Sanger-sequenced and the nucleotide alignments of all isolates displayed identity levels above 97% with P. xanthii isolates in GenBank database. Phylogenetic analyses indicated only P. xanthii isolates as the PM-inducing pathogens in chayote. Inoculation assays were performed using chayote, zucchini and a set of muskmelon differential cultigens for determination of the physiological races of P. xanthii. All chayote isolates were pathogenic to chayote and zucchini seedlings. Five isolates were also pathogenic to the muskmelon cultigens ?Hale's Best Jumbo?, ?Védrantais?, ?PMR-45? and ?Edisto 47?, whereas ?PMR-5? was asymptomatic during the experimental period. The virulence profile of chayote-infecting isolates allowed their classification as P. xanthii race 2. To the best of our knowledge, this is the first worldwide report of P. xanthii race 2 in chayote. This report has relevant epidemiological and disease management implications, allowing more sustainable chayote cultivation under tropical and subtropical conditions.
650 $aSechium
650 $aChuchu
650 $aOídio
700 1 $aFONSECA, M. E. N.
700 1 $aBOITEUX, L. S.
700 1 $aSANTOS, M. do D. M.
700 1 $aVELOSO, J. S.
700 1 $aAGUIAR, F. M.
700 1 $aREIS, A.
773 $tJournal of Phytopathology$gv. 171, p. 583-588, 2023.
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| 1. |  | SMITH, M. N.; STARK, S. C.; TAYLOR, T. C.; SCHIETTI, J.; ALMEIDA, D. R. A. de; ARAGÓN, S.; TORRALVO, K.; LIMA, A. P.; OLIVEIRA, G. de; ASSIS, R. L. de; LEITOLD, V.; PONTES-LOPES, A.; SCOLES, R.; VIEIRA, L. C. de S.; RESENDE, A. F.; COPPOLA, A. I.; BRANDÃO, D. O.; SILVA JUNIOR, J. de A.; LOBATO, L. F.; FREITAS, W.; ALMEIDA, D.; SOUZA, M. S.; MINOR, D. M.; VILLEGAS, J. C.; LAW, D. J.; GONÇALVES, N.; ROCHA, D. G. da; GUEDES, M. C.; TONINI, H.; SILVA, K. E. da; HAREN, J. van; ROSA, D. M.; VALLE, D. F. do; CORDEIRO, C. L.; LIMA, N. Z. de; SHAO, G.; MENOR, I. O.; CONTI, G.; FLORENTINO, A. P.; MONTTI, L.; ARAGÃO, L. E. O. C.; McMAHON, S. M.; PARKER, G. G.; BRESHEARS, D. D.; COSTA, A. C. L. da; MAGNUSSON, W. E.; MESQUITA, R.; CAMARGO, J. L. C.; OLIVEIRA JUNIOR, R. C. de; CAMARGO, P. B. de; SALESKA, S. R.; NELSON, B. W. Diverse anthropogenic disturbances shift Amazon forests along a structural spectrum. Frontiers in Ecology an the Environment, v. 21, n. 1, p. 24-32, 2023.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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