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| Registros recuperados : 102 | |
| 44. |  | SANTOS, A. F. dos; MATSUOKA, K.; ALFENAS, A. C.; MAFFIA, L. A. Identificação de Phytophthora em seringueira (Hevea spp.) no Estado da Bahia. In: CONGRESSO BRASILEIRO DE FITOPATOLOGIA, 24., 1991, Rio de Janeiro. Resumos... Fitopatologia Brasileira, v. 16, n. 2, p. LV, jun. 1991.| Biblioteca(s): Embrapa Amazônia Ocidental. |
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| 49. | | CARVALHO, A. de O de; ALFENAS, A. C.; MAFFIA, L. A.; CARMO, M. G. F. do. Avaliacao do processo da ferrugem (Puccinia psidii) em brotacoes de Eucalyptus cloeziana no Suldeste da Bahia, de 1987 a 1989. Revista Arvore, Vicosa, v.18, n.3, p.265-274, set./dez. 1994.| Biblioteca(s): Embrapa Florestas. |
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| 59. | | SANTOS, A. F. dos; MATSUOKA, K.; MAFFIA, L. A.; ALFENAS, A. C. Influência da concentração de inóculo e da temperatura sobre a infecção de Phytophthora e de P. palmivora MF1 em seringueira. In: CONGRESSO BRASILEIRO DE FITOPATOLOGIA, 24., 1991, Rio de Janeiro. Resumos... Fitopatologia Brasileira, v. 16, n. 2, p. XXXIII, jun. 1991.| Biblioteca(s): Embrapa Amazônia Ocidental. |
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| Registros recuperados : 102 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Acre; Embrapa Trigo. |
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Data corrente: |
09/01/2009 |
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Data da última atualização: |
28/07/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Nacional - B |
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Autoria: |
GONCALVES, R. C.; LAU, D.; OLIVEIRA, J. R.; MAFFIA, L. A.; CASCARDO, J. C. M.; ALFENAS, A. C. |
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Afiliação: |
RIVADALVE COELHO GONCALVES, CPAF-AC; DOUGLAS LAU, CNPT; José R. Oliveira, Universidade Federal de Viçosa (UFV); Luiz A. Maffia, Universidade Federal de Viçosa (UFV); Júlio C. M. Cascardo, Universidade Estadual de Santa Cruz (UESC); Acelino C. Alfenas, Universidade Federal de Viçosa (UFV). |
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Título: |
Etiology of bacterial leaf blight of eucalyptus in Brazil. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Tropical Plant Pathology, Brasília, DF, v. 33, n. 3, p. 180-188, May/Jun. 2008. |
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ISSN: |
1983-2052 (online) |
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DOI: |
10.1590/S1982-56762008000300002. |
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Idioma: |
Inglês
Português |
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Conteúdo: |
Bacterial leaf blight of eucalyptus is initially characterized by water soaked, angular, amphigenous and interveinal lesions, concentrated along the main vein, at the edges or scattered on the leaf blade. As the disease progresses, the lesions become brown to pale, and when young leaves are infected leaf cut areas at the edges or perforations at the center of the lesions may appear due to abortion of the necrotic area. Eventually, necrosis may be found on petiole and twigs. Leaf fall commonly occurs on highly susceptible genotypes due to the early senescence of diseased leaves. Precise diagnosis is accomplished by bacterial exudation from leaf sections placed in a water drop under light microscope (200 x). Twenty-five bacterial isolates from Amapá (2), Bahia (4), Minas Gerais (2), São Paulo (9), Pará (3), Mato Grosso do Sul (1), and Rio Grande do Sul (4) States, which induced hypersensitive reaction (HR) in non-host plants and were pathogenic to eucalyptus, when inoculated by inoculum injection, were identified by biochemical assays, using carbon sources (MicroLogTM BIOLOG) and sequence analysis (16S rDNA). Ten isolates were identified as Xanthomonas axonopodis, four as X. campestris, four as Pseudomonas syringae, two as P. putida, two as P. cichorii, one as Erwinia sp., and two were similar to bacterial genera of Rhizobiaceae. When spray inoculated on intact plants of eucalyptus, only X. axonopodis, P. cichorii and isolates of the Rhizobiaceae family induced typical symptoms of the disease and were considered pathogenic. In Brazil, X. axonopodis seems to be the most widespread species causing the bacterial leaf blight of Eucalyptus spp. MenosBacterial leaf blight of eucalyptus is initially characterized by water soaked, angular, amphigenous and interveinal lesions, concentrated along the main vein, at the edges or scattered on the leaf blade. As the disease progresses, the lesions become brown to pale, and when young leaves are infected leaf cut areas at the edges or perforations at the center of the lesions may appear due to abortion of the necrotic area. Eventually, necrosis may be found on petiole and twigs. Leaf fall commonly occurs on highly susceptible genotypes due to the early senescence of diseased leaves. Precise diagnosis is accomplished by bacterial exudation from leaf sections placed in a water drop under light microscope (200 x). Twenty-five bacterial isolates from Amapá (2), Bahia (4), Minas Gerais (2), São Paulo (9), Pará (3), Mato Grosso do Sul (1), and Rio Grande do Sul (4) States, which induced hypersensitive reaction (HR) in non-host plants and were pathogenic to eucalyptus, when inoculated by inoculum injection, were identified by biochemical assays, using carbon sources (MicroLogTM BIOLOG) and sequence analysis (16S rDNA). Ten isolates were identified as Xanthomonas axonopodis, four as X. campestris, four as Pseudomonas syringae, two as P. putida, two as P. cichorii, one as Erwinia sp., and two were similar to bacterial genera of Rhizobiaceae. When spray inoculated on intact plants of eucalyptus, only X. axonopodis, P. cichorii and isolates of the Rhizobiaceae family induced typical symptom... Mostrar Tudo |
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Palavras-Chave: |
Enfermedades y desórdenes de las plantas; Erwinia rhizobiaceae; Marchitez foliar. |
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Thesagro: |
Bactéria; Doença de planta; Etiologia; Eucalipto; Eucalyptus spp; Mancha foliar. |
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Thesaurus NAL: |
Erwinia; Etiology; Leaf blight; Plant diseases and disorders; Pseudomonas; Rhizobiaceae; Xanthomonas. |
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Categoria do assunto: |
--
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/116168/1/20572.pdf
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|
Marc: |
LEADER 02782naa a2200397 a 4500
001 1510894
005 2021-07-28
008 2008 bl uuuu u00u1 u #d
022 $a1983-2052 (online)
024 7 $a10.1590/S1982-56762008000300002.$2DOI
100 1 $aGONCALVES, R. C.
245 $aEtiology of bacterial leaf blight of eucalyptus in Brazil.
260 $c2008
520 $aBacterial leaf blight of eucalyptus is initially characterized by water soaked, angular, amphigenous and interveinal lesions, concentrated along the main vein, at the edges or scattered on the leaf blade. As the disease progresses, the lesions become brown to pale, and when young leaves are infected leaf cut areas at the edges or perforations at the center of the lesions may appear due to abortion of the necrotic area. Eventually, necrosis may be found on petiole and twigs. Leaf fall commonly occurs on highly susceptible genotypes due to the early senescence of diseased leaves. Precise diagnosis is accomplished by bacterial exudation from leaf sections placed in a water drop under light microscope (200 x). Twenty-five bacterial isolates from Amapá (2), Bahia (4), Minas Gerais (2), São Paulo (9), Pará (3), Mato Grosso do Sul (1), and Rio Grande do Sul (4) States, which induced hypersensitive reaction (HR) in non-host plants and were pathogenic to eucalyptus, when inoculated by inoculum injection, were identified by biochemical assays, using carbon sources (MicroLogTM BIOLOG) and sequence analysis (16S rDNA). Ten isolates were identified as Xanthomonas axonopodis, four as X. campestris, four as Pseudomonas syringae, two as P. putida, two as P. cichorii, one as Erwinia sp., and two were similar to bacterial genera of Rhizobiaceae. When spray inoculated on intact plants of eucalyptus, only X. axonopodis, P. cichorii and isolates of the Rhizobiaceae family induced typical symptoms of the disease and were considered pathogenic. In Brazil, X. axonopodis seems to be the most widespread species causing the bacterial leaf blight of Eucalyptus spp.
650 $aErwinia
650 $aEtiology
650 $aLeaf blight
650 $aPlant diseases and disorders
650 $aPseudomonas
650 $aRhizobiaceae
650 $aXanthomonas
650 $aBactéria
650 $aDoença de planta
650 $aEtiologia
650 $aEucalipto
650 $aEucalyptus spp
650 $aMancha foliar
653 $aEnfermedades y desórdenes de las plantas
653 $aErwinia rhizobiaceae
653 $aMarchitez foliar
700 1 $aLAU, D.
700 1 $aOLIVEIRA, J. R.
700 1 $aMAFFIA, L. A.
700 1 $aCASCARDO, J. C. M.
700 1 $aALFENAS, A. C.
773 $tTropical Plant Pathology, Brasília, DF$gv. 33, n. 3, p. 180-188, May/Jun. 2008.
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Embrapa Acre (CPAF-AC) |
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