Data/hora: 23/09/2024 15:22:42

Biblioteca(s): 	Embrapa Mandioca e Fruticultura.	
Data corrente: 	07/07/2014	
Data da última atualização: 	25/05/2023	
Autoria: 	HADDAD, F.; SARAIVA, R. M.; MIZUBUTI, E. S. G.; ROMEIRO, R. S.; MAFFIA, L. A.	
Afiliação: 	FERNANDO HADDAD, CNPMF; RODRIGO M. SARAIVA, UFV; EDUARDO S. G. MIZUBUTI, UFV; REGINALDO S. ROMEIRO, UFV; LUIZ A. MAFFIA, UFV.	
Título: 	Isolation and selection of Hemileia Vastatrix antagonists.	
Ano de publicação: 	2014	
Fonte/Imprenta: 	European Journal of Plant Pathology, 2014.	
ISSN: 	0929-1873	
DOI: 	10.1007/s10658-014-0430-9	
Idioma: 	Inglês	
Conteúdo: 	Organic coffee growing is rapidly increasing in Brazil, and many diseases, especially coffee leaf rust (Hemileia vastatrix), are threatening its production. This study is a first step towards a biocontrol program for coffee rust on organically grown plants. In three organic coffee farms in the state of Minas Gerais, 393 microbial strains including 154 bacterial and 239 fungal strains were isolated from leaves, leaf debris, and soil samples, and in 6 month-old coffee plants, 17 of these isolates reduced both the infection frequency (IF) and the number of H. vastatrix urediniospores produced per leaf (UPL) by more than 70 %. The isolates were identified as eight bacteria isolates, seven Bacillus spp. and one Pseudomonas sp., and nine fungal isolates, four Fusarium spp., two Penicillium spp., one Aspergillus sp., one Acremonium sp. and one Cladosporium sp. Each fungal and bacterial isolate was applied 0, 4, 8, 12 or 16 days before and 0, 4, 8, 12 or 16 days after H. vastatrix inoculation, and the efficiency in reducing both IF and UPL was evaluated. The efficiency was higher and lasted longer when the bacterial isolates were applied before H. vastatrix inoculation. Six Bacillus (B10, B25, B143, B157, B171, B175), two Fusarium (F205, F281), and one Pseudomonas (B286) isolates are potentially efficient as biocontrol agents of H. vastatrix and will be tested using field experiments.	
Palavras-Chave: 	Cafeicultura orgânica; Disorders; Plant diseases.	
Thesagro: 	Café; Coffea Arábica; Controle biológico; Doença de planta; Doença fungíca; Ferrugem; Hemileia Vastatrix.	
Thesaurus Nal: 	Biological control; Leaf rust.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Mandioca e Fruticultura (CNPMF)	
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