Data/hora: 02/06/2024 06:56:18

Biblioteca(s): 	Embrapa Meio Ambiente.	
Data corrente: 	14/12/2012	
Data da última atualização: 	05/02/2021	
Autoria: 	SILVA, H. S. A.; TOZZI, J. P. L.; TERRASAN, C. R. F.; BETTIOL, W.	
Afiliação: 	HARLLEN SANDRO ALVES SILVA, CNPMF; WAGNER BETTIOL, CNPMA.	
Título: 	Endophytic microorganisms isolated from coffee leaves, roots and branches as plant growth promoters and biocontrol agents of coffee leaf rust.	
Ano de publicação: 	2012	
Fonte/Imprenta: 	IOBC/WPRS Bulletin, v. 78, p. 193-196, 2012.	
Idioma: 	Inglês	
Conteúdo: 	ABSTRACT: Suppression of plant diseases and growth promotion due to the action of endophytic microorganisms has been demonstrated in several pathosystems. Experiments under controlled conditions involving 234 endophytic bacteria and fungi isolated from coffee leaves, roots and branches were conducted with the objective of evaluating the germination inhibition of Hemileia vastatrix urediniospores, the control of coffee leaf rust development in tests with leaf discs and on plastic bags seedling, and to promote growth of coffee seedlings. None of the fungal isolates induced plant growth or reduced disease severity. The bacterial isolates (identified by the fatty acids profile analysis) 85G (Escherichia fergusonii), 161G, 163G, 160G, 150G (Acinetobacter calcoaceticus) and 109G (Salmonella enterica) increased plant growth, the maximum being induced by 85G. This isolate produced in vitro phosphatase and indol acetic acid. In assay to control rust on coffee leaf disc, nine bacterial isolates, 64R, 137G, 3F (Brevibacillus choshinensis), 14F (Salmonella enterica), 36F (Pectobacterium carotovorum), 109G (Bacillus megaterium), 115G (Microbacterium testaceum), 116G and 119G (Cedecea davisae) significantly reduced disease severity, when applied 72 or 24h before challenging with the pathogen. In seedling tests most disease severity reduction was achieved by the isolates 109G and 119G. There was no correspondence between the organisms that promoted seedling growth and those that reduced rust severity on seedlings or leaf discs.	
Palavras-Chave: 	Coffee leaf rust; Endophytic bacteria.	
Thesagro: 	Bactéria; Café; Controle biológico; Estimulante de crescimento vegetal; Ferrugem; Hemileia vastatrix.	
Thesaurus Nal: 	Biological control; Endophytes; Growth promotion; Rust diseases.	
Categoria do assunto: 	H Saúde e Patologia	
Registro original: 	Embrapa Meio Ambiente (CNPMA)	
Exemplares: 	CNPMA - (11661-1) - UPC - AP - DD -  -  -  - DIS