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Título: | Inhibition of Orobanche crenata seed germination and radicle growth by allelochemicals identified in cereals |
Autor: | Fernández-Aparicio, Mónica CSIC ORCID; Cimmino, Alessio CSIC ORCID; Evidente, Antonio; Rubiales, Diego CSIC ORCID | Palabras clave: | Allelopathy Broomrape Benzoxazolinones Parasitic weed management |
Fecha de publicación: | sep-2013 | Editor: | American Chemical Society | Citación: | Journal of Agricultural and Food Chemistry 61(41): 9797-9803 (2013) | Resumen: | Orobanche crenata is a parasitic weed that causes severe yield losses in important grain and forage legume crops. Cereals have been reported to inhibit O. crenata parasitism when grown intercropped with susceptible legumes, but the responsible metabolites have not been identified. A number of metabolites have been reported in cereals that have allelopathic properties against weeds, pests, and pathogens. We tested the effect of several allelochemicals identified in cereals on O. crenata seed germination and radicle development. We found that 2-benzoxazolinone, its derivative 6-chloroacetyl-2-benzoxazolinone, and scopoletin significantly inhibited O. crenata seed germination. Benzoxazolinones, l-tryptophan, and coumalic acid caused the stronger inhibition of radicle growth. Also, other metabolites reduced radicle length, this inhibition being dose-dependent. Only scopoletin caused cell necrotic-like darkening in the young radicles. Prospects for their application to parasitic weed management are discussed. © 2013 American Chemical Society. | URI: | http://hdl.handle.net/10261/88830 | DOI: | 10.1021/jf403738p | Identificadores: | doi: 10.1021/jf403738p issn: 0021-8561 e-issn: 1520-5118 |
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