Fecha/hora: 03/06/2024 18:53:54

Biblioteca(s): 	INIA Las Brujas.	
Fecha corriente: 	21/02/2014	
Fecha de la última actualización: 	08/10/2019	
Autoria: 	LADO, J.; CRONJE, P.J.R.; RODRIGO, M.J.; ZACARÍAS, L.	
Afiliación: 	JOANNA LADO LINDNER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; PAUL J.R. CRONJE, Citrus Research International (CRI), Department of Horticultural Science, Stellenbosch University, South Africa; MARÍA J. RODRIGO, Instituto de Agroquímica Y Tecnología de Alimentos (IATA), Consejo Superior de Investigaciones Científicas (CSIC), Spain; LORENZO ZACARÍAS, aInstituto de Agroquímica Y Tecnología de Alimentos (IATA), Consejo Superior de Investigaciones Científicas (CSIC), Spain.	
Título: 	Fruit shading enhances red color and carotenoid accumulation in 'Star Ruby' grapefruit. (Conference Paper).	
Año de publicación: 	2015	
Fuente/Imprenta: 	Acta Horticulturae, 2015, Volume 1065, Pages 1521-1528.	
Série: 	(Acta Horticulturae; 1065).	
ISBN: 	978-94-62610-53-8	
ISSN: 	0567-7572	
DOI: 	10.17660/ActaHortic.2015.1065.193	
Idioma: 	Inglés	
Notas: 	ISHS Acta Horticulturae 1065: XII International Citrus Congress - International Society of Citriculture. Publication date: 20 January 2015.
Editors:  B. Sabater-Muñoz, P. Moreno, L. Peña, L. Navarro.	
Contenido: 	ABSTRACT.
Accumulation of the red carotene pigment, lycopene, in Citrus fruit is an unusual feature restricted to grapefruit, pummelo and few orange mutants. Recent studies indicate that differential mechanisms may be operating in the different lycopene-accumulating varieties, highlighting the importance to understand these processes. It is well characterized in Citrus fruit that light positively affects color development and consequently carotenoid content and composition. However, it is paradoxical that by shading degreening of the red grapefruit ?Star Ruby? is accelerated and external color is enhanced (higher red coloration). To further understand the regulatory mechanisms of light on carotenoids biosynthesis in a lycopene-accumulating grapefruit, carotenoid composition and expression of related carotenoid biosynthetic genes were analyzed in the peel of shaded and light-exposed ?Star Ruby? grapefruit. The stage of fruit development at the time of shading appears to be influential in color development. In the peel of shaded fruits, total carotenoids (×4.5) and particularly lycopene (×14) and &#946;-carotene (×4) experienced a dramatic increase. These changes were associated with a lower expression of early genes in the pathway as well as &#946;-lycopene cyclase and &#946;-carotene hydroxylase genes, envisaging their involvement in lycopene accumulation.
© ISHS	
Palabras-Clave: 	Carotene; Grapefruit; Light; Lycopene.	
Thesagro: 	CITRUS.	
Categoría del tema: 	F01 Cultivo	
Registro original: 	INIA Las Brujas (LB)	
Ejemplares: 	LB - (12762-1) - PXI - AP - DD - PP/ACTA HORTICURAE/2015/1065 -  -  - DIS