Data/hora: 29/05/2024 14:56:41

Biblioteca(s): 	Embrapa Agricultura Digital.	
Data corrente: 	21/07/2009	
Data da última atualização: 	11/11/2010	
Autoria: 	BOGO, A.; MANTLE, P. G.; CASA, R. T.; GUIDOLIN, A. F.	
Afiliação: 	AMAURI BOGO, CAV/UDESC; PETER G. MANTLE, Imperial College of Science, Technology and Medicine; RICARDO T. CASA, CAV/UDESC; ALTAMIR F. GUIDOLIN, CAV/UDESC.	
Título: 	The structures of the honeydew oligosaccharides synthesized by Claviceps africana.	
Ano de publicação: 	2006	
Fonte/Imprenta: 	Summa Phytopathologica, Botucatu, v. 32, n. 1, p. 16-20, Jan./Mar. 2006.	
Idioma: 	Inglês	
Conteúdo: 	The structures of the principal oligosaccharides in the honeydew exudate of the sorghum ergot pathogen Claviceps africana, which has become epidemic in the Americas, have been characterized through linkage analysis using FAB-MS and GC-MS techniques, as 1,6-di-b-D-fructofuranosyl-D-mannitol and 1,5-di-b-D-fructofuranosyl-D-arabitol trisaccharides, 1-b-D-fructofuranosyl-D-mannitol and 5-b-D-fructofuranosyl-D-arabitol disaccharides and other minor disaccharides and trisaccharides. Their structural diversity is explained according to perceived biosynthetic interrelationships in pathways that appear to be unique amongst ergot fungi, particularly concerning intra-molecular reduction of fructose. The oligosaccharide, 1,6-di-b-D-fructofuranosyl-D-mannitol, which inhibits C. africana macrospore germination at a concentration in water of 1 g/mL or more, forms together with other slightly less bioactive oligosaccharides, the basis of a novel strategy to limit ergot disease losses in hybrid sorghum seed production.	
Palavras-Chave: 	Análise de ligação; Claviceps africana; Cromatografia gasosa-espectrometria de massa; Doença açucarada do sorgo; Espectroscopia de bombardeamento rápido de átomos-espectrometria de massa; FAB-MS; GC-MS; Oligossacarídeos.	
Thesaurus Nal: 	Ergot.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Agricultura Digital (CNPTIA)	
Exemplares: 	CNPTIA - (13486-1) - ADD - AP - PP -  -  -  - DIS