Leaf dehydration is needed to induce abscisic acid accumulation in roots of citrus plants
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Scholar |
Otros documentos de la autoría: Manzi Fraga, Matías Jesús; Pitarch Bielsa, Marta; Arbona, Vicent; Gomez-Cadenas, Aurelio
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/2508
comunitat-uji-handle3:10234/6999
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https://doi.org/10.1016/j.envexpbot.2017.05.004 |
Metadatos
Título
Leaf dehydration is needed to induce abscisic acid accumulation in roots of citrus plantsFecha de publicación
2017-05-09Editor
ElsevierCita bibliográfica
MANZI FRAGA, Matías Jesús; PITARCH-BIELSA, Marta; ARBONA MENGUAL, Vicent; GÓMEZ CADENAS, Aurelio. Leaf dehydration is needed to induce abscisic acid accumulation in roots of citrus plants. Environmental and Experimental Botany (2017), v. 139, p. 116-126Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.sciencedirect.com/science/article/pii/S0098847217301089Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
The root system is the main organ involved in the water uptake and it is assumed that it perceives soil dehydration, triggering water stress responses at the entire plant level, including abscisic acid (ABA) accumul ... [+]
The root system is the main organ involved in the water uptake and it is assumed that it perceives soil dehydration, triggering water stress responses at the entire plant level, including abscisic acid (ABA) accumulation. However, several lines of evidence demonstrate that leaves directly adjust their water status (and induce increases in ABA levels) in response to changes in the evaporative demand. To evaluate the influence of leaf water status on ABA accumulation in roots, the canopy of citrus plants was kept at high humidity while roots were dehydrated. Leaves and roots of completely dehydrated plants increased levels of ABA whereas plants with turgid leaves did not accumulate ABA either in leaves or in roots. Furthermore, in dehydrated roots, the expression of several key genes involved in carotenoid and ABA biosynthetic pathways such as CsβCHX1 and CsNCED1 was strongly affected by the water status of leaves whereas water availability in roots showed a marginal influence. Overall, results confirm that leaves are a relevant source of ABA for roots during dehydration and also demonstrate that leaf-dehydration is required to trigger ABA-induced responses in roots. [-]
Publicado en
Environmental and Experimental Botany (2017), v. 139Proyecto de investigación
1) Ministerio de Economía (MINECO) and Universitat Jaume I through grants no. AGL2016-76574-R and UJI- B2016-23/UJI-B2016-24; 2) “ Santiago Grisolia ” fellowship from Generalitat Valenciana (Spain).Derechos de acceso
http://rightsstatements.org/vocab/CNE/1.0/
info:eu-repo/semantics/restrictedAccess
info:eu-repo/semantics/restrictedAccess
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