Fecha/hora: 15/06/2024 17:13:54

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