Data/hora: 05/06/2024 01:09:41

Biblioteca(s): | Embrapa Algodão.
Data corrente: | 13/01/2020
Data da última atualização: | 20/01/2020
Autoria: | MACHADO, A. R.; PINHO, D. B.; SOARES, D. J.; GOMES, A. A. M.; PEREIRA, O. L.
Afiliação: | Alexandre Reis Machado, Universidade Federal de Pernambuco - UFPE/Departamento de Micologia; Danilo Batista Pinho, Universidade de Brasília - UnB/Departamento de Fitopatologia; DARTANHA JOSE SOARES, CNPA; André Angelo Medeiros Gomes, Universidade Federal de Viçosa - UFV/Departamento de Microbiologia Agrícola; Olinto Liparini Pereira, Universidade Federal de Viçosa - UFV/Departamento de Fitopatologia.
Título: | Bayesian analyses of five gene regions reveal a new phylogenetic species of Macrophomina associated with charcoal rot on oilseed crops in Brazil.
Ano de publicação: | 2019
Fonte/Imprenta: | European Journal of Plant Pathology, v. 53, p. 89-100, 2019.
Idioma: | Inglês
Conteúdo: | Macrophomina is a genus belonging to Botryosphaeriaceae that comprises well-known necrotrophic pathogens related to hundreds of plant hosts around the world. Historically, M. phaseolina is the causal agent of charcoal rot in several crops, mainly in tropical and subtropical areas around the world. However, after a recent genetic diversity study using morphological and molecular approaches, which resulted in the epitypification of M. phaseolina, and the description of a new Macrophomina species associated with charcoal rot disease, the hypothesis that other cryptic species could be present under the name M. phaseolina was raised. Previous studies in Brazil revealed a high genetic diversity and different levels of aggressiveness of M. phaseolina isolates associated with charcoal rot in oilseed crops. Thus, the aim of the present study was, through phylogenetic and morphological studies, to determine if isolates of Macrophomina obtained from different oilseed crops represent a single species or distinct taxa. Based on the results obtained, it was possible to identify three different Macrophomina species: M. phaseolina, M. pseudophaseolina and a new phylogenetic species, M. euphorbiicola. This is first report of M. pseudophaseolina in Brazil causing charcoal rot on Arachis hypogaea, Gossypium hirsutum and Ricinus communis and associated with seed decay of Jatropha curcas. In addition, a novel species described in the present study, M. euphorbiicola, is reported as the etiological agent of the charcoal rot on R. communis and Jatropha gossypifolia.
Palavras-Chave: | Cryptic species; Soil-borne fungi.
Thesaurus Nal: | Botryosphaeriales; Phylogeny; Plant pathology.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/208674/1/Bayesian-analyses-of-five-gene-regions.pdf
Registro original: | Embrapa Algodão (CNPA)
Exemplares: | CNPA - (28702-1) - UPC - AP - DD -  -  -  - DIS