Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/33346
Full metadata record
DC FieldValueLanguage
dc.creatorSilva, Humberson Rocha-
dc.creatorPozza, Edson Ampélio-
dc.creatorSouza, Paulo Estevão de-
dc.creatorFerreira, Maria Alves-
dc.creatorFreitas, Aurivan Soares de-
dc.creatorMoreira, Silvino Intra-
dc.date.accessioned2019-03-29T17:10:18Z-
dc.date.available2019-03-29T17:10:18Z-
dc.date.issued2018-12-
dc.identifier.citationSILVA, H. R. et al. Cercospora leaf spot in Toona ciliata: epidemiology and infection process of Cercospora cf. alchemillicola. Forest Pathology, [S. l.], v. 48, n. 6, p. 1-8, Dec. 2018. DOI: 10.1111/efp.12451.pt_BR
dc.identifier.urihttps://onlinelibrary.wiley.com/doi/full/10.1111/efp.12451pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/33346-
dc.description.abstractThe biology of Cercospora leaf spot (Cercospora cf. alchemillicola) of Toona ciliata was examined in terms of the effects of temperature and duration of foliage wetting on the progress of disease and the mechanism of pathogen infection. To evaluate the effect of temperature on mycelial growth, cercosporin production and conidial germination, experiments were conducted in a 4 × 5 factorial design, with four isolates (HR01, HR02, HR03 and CML3059) at five temperatures (15, 19, 23, 26 and 30°C). The area under the disease progress curve (AUDPC) was calculated in a 3 × 5 factorial design at three temperatures (20, 23 and 29°C) and five leaf wetness durations (0, 12, 24, 48 and 72 hr). Penetration of C. cf. alchemillicola into leaves was examined by scanning electron microscopy. Maximum mycelial growth of all isolates occurred at 24.8°C. HR02 and HR01 produced higher quantities of cercosporin compared with CML3059 and HR03. Temperatures between 21.6 and 23.0°C favoured production of the toxin among isolates. Higher conidial germination rates occurred in isolates HR02 and HR01 compared with other isolates, with optimum germination occurring at 24.2–26.3°C. A leaf wetting period of 72 hr at 23.3°C gave the highest AUDPC value. No hyphal penetration was observed through natural openings. However, germ tubes grew inside wounds on the leaf epidermis. In addition, Phyllachora balansae (cause of tar spot) opened fissures on the leaf epidermis, thus creating wounds enabling C. cf. alchemillicola to infect.pt_BR
dc.languageen_USpt_BR
dc.publisherBlackwell Verlag GmbHpt_BR
dc.rightsrestrictAccesspt_BR
dc.sourceForest Pathologypt_BR
dc.subjectLeaf wetnesspt_BR
dc.subjectPhyllachora balansaept_BR
dc.subjectCercosporinpt_BR
dc.subjectMolhamento foliarpt_BR
dc.subjectCercosporinapt_BR
dc.titleCercospora leaf spot in Toona ciliata: epidemiology and infection process of Cercospora cf. alchemillicolapt_BR
dc.typeArtigopt_BR
Appears in Collections:DFP - Artigos publicados em periódicos

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.