English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/126378
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Ecophysiological roles of abaxial anthocyanins in a perennial understorey herb from temperate deciduous forests

AutorFernández-Marín, Beatriz; Esteban, Raquel ; Míguez, Fátima; Artetxe, Unai; Castañeda, Verónica; Pintó-Marijuan, Marta; Becerril, José M.; García-Plazaola, José I.
Palabras claveAbaxial anthocyanins
Saxifraga hirsuta
Fecha de publicación28-abr-2015
EditorOxford University Press
CitaciónAoB Plants 7: plv042 (2015)
ResumenAccumulation of abaxial anthocyanins is an intriguing leaf trait particularly common among deeply shaded understorey plants of tropical and temperate forests whose ecological significance is still not properly understood. To shed light on it, possible ecophysiological roles of abaxial anthocyanins were tested in the perennial understorey herb of temperate deciduous forests Saxifraga hirsuta, chosen as a model species due to the coexistence of green and anthocyanic leaves and the presence of an easily removable lower anthocyanic epidermis. Anthocyanins accumulated during autumn, which temporally matched the overstorey leaf fall. Patterns of development of abaxial anthocyanins and direct measurements of photochemical efficiency under monochromatic light were not consistent with a photoprotective hypothesis. Enhancement of light capture also seemed unlikely since the back-scattering of red light towards the lower mesophyll was negligible. Seed germination was similar under acyanic and anthocyanic leaves. A relevant consequence of abaxial anthocyanins was the dramatic reduction of light transmission through the leaf. The dark environment generated underneath the Saxifraga canopy was enhanced by the horizontal repositioning of leaves, which occurs in parallel with reddening. This might play a role in biotic interactions by inhibiting vital processes of competitors, which may be of especial importance in spring before the overstorey leaves sprout.
Versión del editorhttp://dx.doi.org/10.1093/aobpla/plv042
Identificadoresissn: 2041-2851
Aparece en las colecciones: (IDAB) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Ecophysiological roles_FernandezMarin.pdf529 kBAdobe PDFVista previa
Mostrar el registro completo

Artículos relacionados:

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.