Data/hora: 10/06/2024 07:46:53

Provedor de dados: 	Revista Brasileira de Botânica	
País: 	Brazil	
Título: 	Changes in polyamines content associated with zygotic embryogenesis in the Brazilian pine, Araucaria angustifolia (Bert.) O. Ktze.	
Autores: 	Astarita,Landro V.; Handro,Walter; Floh,Eny I.S.	
Data: 	2003-06-01	
Ano: 	2003	
Palavras-chave: 	Araucaria angustifolia; Embryogenesis; Polyamines.	
Resumo: 	Changes in the polyamine content were analyzed in different embryo developmental stages and tissues during seed development in the conifer Araucaria angustifolia (Bert.) O. Ktze. Free polyamine contents varied according to the tissue and stage of embryo development, the highest levels occurring in the embryonic axis at the early stages, when putrescine and spermidine were most abundant. The levels of spermidine were higher from the stage where cotyledons arise, whereas putrescine decreases. The putrescine/spermine+spermidine ratio was higher during the initial phases of seed development, corresponding to cell multiplication and elongation, with a decrease in the final stages, corresponding to stabilization of the dry matter content.	
Tipo: 	Info:eu-repo/semantics/report	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042003000200003	
Editor: 	Sociedade Botânica de São Paulo	
Relação: 	10.1590/S0100-84042003000200003	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Botany  v.26 n.2 2003	
Fonte: 	info:eu-repo/semantics/openAccess