Data/hora: 10/06/2024 17:02:24

Provedor de dados: 	42	
País: 	Brazil	
Título: 	Physiological and biochemical changes during the loss of desiccation tolerance in germinating Adenanthera pavonina L. seeds	
Autores: 	SOARES,GIULIANA C.M.; DIAS,DENISE C.F.S.; FARIA,JOSÉ M.R.; BORGES,EDUARDO E.L.	
Data: 	2015-12-01	
Ano: 	2015	
Palavras-chave: 	Cell cycle; Desiccation sensitivity; DNA content; Drying; Heat-stable proteins.	
Resumo: 	ABSTRACT We investigated the loss of desiccation tolerance (DT) in Adenanthera pavonina seeds during germination. Seeds were subjected to imbibition for 0, 24, 36, 48, 60 and 81 h, then dried to their initial moisture content (13%), rehydrated and evaluated for survival (resumption of growth and development of normal seedlings) and membrane system integrity (electrolyte leakage). Embryonic axes of seeds subjected only to imbibition during the same early time periods were used to investigate the electrophoretic patterns of heat-stable proteins and the relative nuclear DNA content. In A. pavonina seeds, DT remained unchanged until 36 h of imbibition (resulting in germination and 82% normal seedlings), after which it was progressively lost, and seeds with a protruded radicle length of 1 mm did not withstand dehydration. The loss of desiccation tolerance could not be related to either membrane damage caused by drying or the resumption of the cell cycle during germination. However, the decrease in heat-stable protein contents observed throughout germination may be related to the loss of DT in A. pavonina seeds.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000502001	
Editor: 	Academia Brasileira de Ciências	
Relação: 	10.1590/0001-3765201520140195	
Formato: 	text/html	
Fonte: 	Anais da Academia Brasileira de Ciências  v.87 n.4 2015	
Fonte: 	info:eu-repo/semantics/openAccess