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Título

Infection with the fungal endophyte Epichloë festucae may alter the allelopathic potential of red fescue

AutorVázquez de Aldana, Beatriz R. ; Romo Vaquero, María ; García Ciudad, Antonia ; Petisco, Cristina ; García Criado, Balbino
Palabras claveFestuca rubra
Fungal endophytes
Allelopathy
Seedling growth
Germination
Phenolic compounds
Red clover
White clover
Bird’s foot trefoil
Ribwort plantain
Fecha de publicación2011
EditorWiley-Blackwell
CitaciónAnnals of Applied Biology 159: 281‐290
ResumenRed fescue (Festuca rubra) is a perennial grass used as both forage and turfgrass. Asymptomatic plants of this species are systemically infected by the fungal endophyte Epichloë festucae, which has a beneficial effect on the infected plants. The aim of this study was to determine the effect of the endophyte Epichloë festucae on the allelopathic potential of Festuca rubra against four associated pasture species that are also considered as weeds in lawns, Trifolium pratense, Trifolium repens, Lotus corniculatus, and Plantago lanceolata. Two experiments were designed to evaluate the allelopathic effect of extracts from the roots and leaves of endophyte-infected (E+) and non-infected (E-) plants on the germination and seedling growth of the four target species. Regardless of the endophyte status of the host plant, leaf extracts elicited a stronger reduction in germination and seedling growth than root extracts. Extracts from E+ plants reduced the speed of germination index of Trifolium spp. to a greater extent than those from E- plants. Radicle length of the target species was the parameter most affected by the presence of the endophyte in F. rubra. Root extracts from E+ plants had a greater inhibitory effect on the radicle growth of the target species than did root extracts from E- plants. A greater concentration in total phenolic compounds was found in the roots of E+ plants than of E-; however, this difference was not observed in the leaves. Thus, the allelopathic potential of F. rubra is altered in infected plants.
Descripción16 páginas, 3 tablas, 2 figuras
Versión del editorhttp://dx.doi.org/10.1111/j.1744‐7348.2011.00495.x
URIhttp://hdl.handle.net/10261/44805
DOI10.1111/j.1744‐7348.2011.00495.x
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