RT journal article
T1 Phytotoxic Potential of Onopordum acanthium L. (Asteraceae)
A1 Watanabe, Yusuke
A1 Novaes, Paula
A1 Kato-Noguchi, Hisashi
A1 Varela Montoya, Rosa María
A1 González Molinillo, José María
A1 Macías Domínguez, Francisco Antonio
A2 Química Orgánica
K1 onopordum acanthium
K1 phytotoxic
K1 Phytochemistry
K1 Allelopathy
AB Onopordum acanthium L. (Asteraceae) is a plant native to southern Europe and southwestern Asia, but it is invasive in disturbed areas and agricultural fields around the world, causing many agronomic problems by interfering with crops or preventing animals from grazing on pastures. Allelopathy could be one of the reasons that this plant has spread over different continents. The aim of the present study was to bioprospect O. acanthium leaf extracts through the isolation and purification of allelopathic secondary metabolites with phytotoxicity to explain their invasive behavior. Phytotoxic activity was tested using etiolated wheat coleoptiles. The most active extract was selected to perform a bioassay-guided isolation of two flavonoids, pectolarigenin (1) and scutellarein 4’-methyl ether (2), and two sesquiterpene lactones, elemanolide 11(13)-dehydromelitensin b-hydroxyisobutyrate (3) and acanthiolide (4). All compounds were isolated for the first time from O. acanthium, and acanthiolide (4) is described for the first time.Compound 3 strongly inhibited the growth of wheat coleoptiles and 1 showed an intermediate effect. The results indicate that these compounds could contribute to the invasion of O. acanthium in ecological systems and agricultural fields.
PB CHEMISTRY & BIODIVERSITY
YR 2014
FD 2014-02
LK http://hdl.handle.net/10498/20310
UL http://hdl.handle.net/10498/20310
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 12-nov-2026