Data/hora: 02/06/2024 13:00:49

Provedor de dados: 	61	
País: 	Brazil	
Título: 	Changes in lipid profile during growth and senescence of Catharanthus roseus leaf	
Autores: 	Mishra,Sanjay; Tyagi,Abhishek; Singh,I.V.; Sangwan,R.S.	
Data: 	2006-12-01	
Ano: 	2006	
Palavras-chave: 	Catharanthus roseus; Glycolipids; Leaf development; Phospholipids; Senescence; Sterol.	
Resumo: 	Various lipid classes and compounds were monitored during the period of leaf emergence to leaf drop of Catharanthus roseus. The expansion to early maturation phase was accompanied by cellular build-up of all major lipid classes, whilst aging and senescence were characterized by their substantial decline, except for the neutral lipids; the leaf monogalactosyl diglyceride/digalactosyl diglyceride ratio decreased from 4.3 (complete maturity) to 2.1 (abscised stage). The early maturation stage was the earliest stage when appreciable amounts of free sterols and fatty acids could be observed. Sterol/phospholipids ratios increased by 68-fold in the abscised leaf as compared to that at full maturity. The unsaturated/saturated fatty acid ratio was far lower in the senescent leaf as compared to that of the fully expanded leaf. The spatial alterations in lipid profiles may be suggestive of concomitant changes in membrane ultrastructure and functions, putatively leading to perturbation of indole alkaloid sequestration capability of the tissues of a species of pharmaceutical significance.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000400002	
Editor: 	Brazilian Journal of Plant Physiology	
Relação: 	10.1590/S1677-04202006000400002	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Plant Physiology  v.18 n.4 2006	
Fonte: 	info:eu-repo/semantics/openAccess