Data/hora: 05/06/2024 05:24:25

Provedor de dados: 	52	
País: 	Brazil	
Título: 	Fructans and water suppression on intact and fragmented rhizophores of Vernonia herbacea	
Autores: 	Dias-Tagliacozzo,Gláucia M.; Itaya,Nair M.; Carvalho,M. Angela Machado de; Figueiredo-Ribeiro,Rita de Cássia L.; Dietrich,Sonia M. C.	
Data: 	2004-07-01	
Ano: 	2004	
Palavras-chave: 	Inulin; Environmental stresses; Drought; Fructan metabolism; Reserve organs; Asteraceae.	
Resumo: 	In order to evaluate the involvement of fructans in drought tolerance, experiments were conducted using intact plants and excised rhizophores of Vernonia herbacea. The water content in rhizophores of intact plants was maintained for 30 days when plants were watered every 7 and 15 days, whereas plants remained alive up to 60 days without water. Total fructan, oligo- to polysaccharides ratio and mean molecular mass of polysaccharides increased in these plants indicating depolymerization of median size molecules. In apical fragments of rhizophores kept dry the oligosaccharides increased in relation to polysaccharides one day after excision in treated tissues. This was reflected in the HPLC profile of the oligosaccharides in which the proportion of free fructose and fructans with DP 4-10 increased markedly. Results indicate that fructan metabolism is involved in drought tolerance of V. herbacea.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000300005	
Editor: 	Instituto de Tecnologia do Paraná - Tecpar	
Relação: 	10.1590/S1516-89132004000300005	
Formato: 	text/html	
Fonte: 	Brazilian Archives of Biology and Technology  v.47 n.3 2004	
Fonte: 	info:eu-repo/semantics/openAccess