RT journal article
T1 Sunflower Metabolites Involved in Resistance Mechanisms against Broomrape
A1 Rial Cumbrera, Carlos
A1 Varela Montoya, Rosa María
A1 González Molinillo, José María
A1 Peralta, Sara
A1 Macías Domínguez, Francisco Antonio
A2 Química Orgánica
K1 Helianthus annuus
K1 parasitic plants
K1 sesquiterpene lactones
K1 strigolactones
K1 coumarins
K1 liquid chromatography-mass spectrometry
AB Several strategies have been proposed to control parasitic plants and these include biological control, the use of herbicides, and suicidal germination or trap crops. In the case of sunflower, the most effective solution is genetic resistance. Nevertheless, the use of resistant cultivars is followed by the appearance of new and more virulent races of the parasite that overcome the existing sources of resistance. For this reason, it is necessary to increase our knowledge of the mechanisms involved in the resistant varieties. In this study, the presence of compounds involved in pre-attachment resistance mechanisms in sunflower varieties was analyzed. The production of stimulators of the germination of parasitic plant seeds and the concentration of the haustorial elongation inhibitor, scopoletin, were measured in exudates of resistant and susceptible sunflower varieties. It was found that dehydrocostuslactone and orobanchyl acetate are not involved in the resistance of the sunflower varieties studied. The results demonstrate that costunolide, heliolactone, and scopoletin are related to sunflower resistance. The sunflower varieties studied do not use all available options to fight parasitic plants. This could be one of the reasons that sunflower resistance is rapidly overcome by broomrape.
PB MDPI
SN 2073-4395
YR 2021
FD 2021-03
LK http://hdl.handle.net/10498/24802
UL http://hdl.handle.net/10498/24802
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 12-nov-2026