Data/hora: 22/06/2024 04:42:10

Biblioteca(s): | Embrapa Meio Ambiente.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 2
Data corrente: | 18/12/2018
Data da última atualização: | 03/11/2020
Autoria: | MELO, M. P. de; MATOS, K. S.; MOREIRA, S. I.; SILVA, F. F.; CONCEIÇÃO, G. H.; NECHET, K. de L.; HALFELD-VIEIRA, B. de A.; BESERRA JUNIOR, J. E. A.; VENTURA, J. A.; COSTA, H.; FURTADO, E. L.; ALVES, E.; CERESINI, P. C.
Afiliação: | MARUZANETE PEREIRA DE MELO, UFOPA; KEDMA DA SILVA MATOS, UFRR; SILVINO INTRA MOREIRA, UFLA; FABIANO F SILVA, UFLA; GRACE HINGRID CONCEIÇÃO, FEIS-UNESP; KATIA DE LIMA NECHET, CNPMA; BERNARDO DE ALMEIDA HALFELD VIEIRA, CNPMA; JOSE EVANDO AGUIAR BESERRA JUNIOR, UFPI; JOSE AIRES VENTURA, INCAPER; HELCIO COSTA, INCAPER; EDSON LUIZ FURTADO, FCA-UNESP; EDUAROD ALVES, UFLA; PAULO C CERESINI, FIES-UNESP.
Título: | Two new Ceratobasidium species causing white thread blight on tropical plants in Brazil.
Ano de publicação: | 2018
Fonte/Imprenta: | Tropical Plant Pathology, v. 43, n. 6, p. 559-571, 2018.
ISSN: | 1983-2052
DOI: | https://doi.org/10.1007/s40858-018-0237-x
Idioma: | Inglês
Conteúdo: | Abstract: White thread blight is one of the most common diseases affecting several tree species that grow in warm and humid regions. The typical symptoms of this disease include blighted leaves hanging by a white thread of fungal hyphae. Leaf samples exhibiting white thread blight symptoms were collected from neem (Azadirachta indica A. Juss) and Brazilian cherry pitanga (Eugenia uniflora L.) plants in Northeastern Brazil, and from Indian green-tea (Camellia sinensis (L.) O. Kuntze), coffee (Coffea arabica L.), and persimmon (Diospyros kaki L.) in agricultural areas neighboring the Atlantic forest in Southeastern Brazil. Fungal isolates were obtained indirectly from leaf fragments or directly by transferring mycelia and sclerotia to culture medium. Bright field and scanning electron microscopy images revealed the association of Rhizoctonia-like hyphae and basidiospores with the infected leaves. In pathogenicity tests, Rhizoctonia-like fungal isolates induced leaf necrosis on their hosts, and the pathogens were re-isolated from inoculated plants. Phylogenetic analyses based on sequences of the ITS rRNA region indicated the occurrence of Ceratobasidium lineages distinct from previously reported Ceratobasidium species. Our study leads to the description of two new species of Ceratobasidium: the fungal isolates from A. indica, C. sinensis, and E. uniflora were classified as Ceratobasidium niltonsouzanum sp. nov., and those obtained from C. arabica and D. kaki as Ceratobasidium chavesanum sp. nov.
Palavras-Chave: | Binucleate Rhizoctonia; Phylogenetic analysis.
Thesagro: | Doença de Planta; Doença Fúngica; Mancha Branca.
Thesaurus Nal: | Ceratobasidium; Fungal diseases of plants.
Categoria do assunto: | H Saúde e Patologia
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (16204-1) - UPC - AP - DD -  -  -  - DIS