Fecha/hora: 23/05/2024 03:03:39

Biblioteca(s): 	INIA Las Brujas.	
Fecha corriente: 	21/02/2014	
Fecha de la última actualización: 	09/10/2019	
Autoria: 	RIVAS, F.; FORNES, F.; RODRIGO, M.J.; ZACARÍAS, L.; AGUSTÍ, M.	
Afiliación: 	CARLOS FERNANDO RIVAS GRELA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay.	
Título: 	Changes in carotenoids and ABA content in Citrus leaves in response to girdling.	
Año de publicación: 	2011	
Fuente/Imprenta: 	Scientia Horticulturae, 2011, v.127, no.4, p.482-487.	
ISSN: 	0304-4238	
DOI: 	10.1016/j.scienta.2010.11.010	
Idioma: 	Inglés	
Notas: 	Article history: Received 31 August 2010 / Received in revised form 11 October 2010 / Accepted 9 November 2010.	
Contenido: 	ABSTRACT.

The effect of girdling on abscisic acid, carotenoids content, xanthophylls cycle and non-photoquemical quenching was studied in leaves from different shoot types of containerized two-year-old 'Loretina' mandarin during spring flush period. Girdling increased abscisic acid in young leaves and decreased it in mature leaves. These changes were accompanied by a significant increase in leaf carotenoids, carotenoids:chlorophylls ratio, xanthophylls and xanthophylls cycle pool size and its de-epoxidation state in vegetative and multiflowered young leafy shoots. However, changes in de-epoxidation state did not correlate with the energy-dependent non-photochemical quenching. The role of carotenoids and abscisic acid as photoprotecting agents during the oxidative stress caused by girdling is discussed. In conclusion, this study provides evidence linking carotenoids-based photoprotecting mechanisms in the response to the stress induced by girdling in Citrus trees. 
© 2010 Elsevier B.V.	
Palabras-Clave: 	Abscisic acid; Oxidative stress; Photoprotection; Pigments; Xanthophylls cycle.	
Thesagro: 	ACIDO ABSCISICO; CITRUS.	
Categoría del tema: 	F01 Cultivo	
Registro original: 	INIA Las Brujas (LB)	
Ejemplares: 	LB - (12829-1) - PXI - AP - DD - PP/SCIENTIA HORTICULTURAE/2011 -  -  - DIS