Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/510894
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dc.contributor.authorGONCALVES, R. C.pt_BR
dc.contributor.authorLAU, D.pt_BR
dc.contributor.authorOLIVEIRA, J. R.pt_BR
dc.contributor.authorMAFFIA, L. A.pt_BR
dc.contributor.authorCASCARDO, J. C. M.pt_BR
dc.contributor.authorALFENAS, A. C.pt_BR
dc.date.accessioned2011-04-10T11:11:11Zpt_BR
dc.date.available2011-04-10T11:11:11Zpt_BR
dc.date.created2009-01-09pt_BR
dc.date.issued2008pt_BR
dc.identifier.citationTropical Plant Pathology, Brasília, DF, v. 33, n. 3, p. 180-188, May/Jun. 2008.pt_BR
dc.identifier.issn1983-2052 (online)pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/510894pt_BR
dc.descriptionBacterial 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.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectEnfermedades y desórdenes de las plantaspt_BR
dc.subjectMarchitez foliarpt_BR
dc.titleEtiology of bacterial leaf blight of eucalyptus in Brazil.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2019-01-08T11:11:11Zpt_BR
dc.subject.thesagroDoença de plantapt_BR
dc.subject.thesagroBactériapt_BR
dc.subject.thesagroMancha foliarpt_BR
dc.subject.thesagroEtiologiapt_BR
dc.subject.thesagroEucaliptopt_BR
dc.subject.thesagroEucalyptus spppt_BR
dc.subject.nalthesaurusPlant diseases and disorderspt_BR
dc.subject.nalthesaurusLeaf blightpt_BR
dc.subject.nalthesaurusEtiologypt_BR
dc.subject.nalthesaurusErwiniapt_BR
dc.subject.nalthesaurusPseudomonaspt_BR
dc.subject.nalthesaurusXanthomonaspt_BR
dc.subject.nalthesaurusRhizobiaceaept_BR
riaa.ainfo.id510894pt_BR
riaa.ainfo.lastupdate2019-01-08 -02:00:00pt_BR
dc.identifier.doi10.1590/S1982-56762008000300002.pt_BR
dc.contributor.institutionRIVADALVE 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).pt_BR
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