title: Crotonic acid as a bioactive factor in carrot seeds (Daucus carota L.).
abstract: Water extracts from the carrot seed (Daucus carota L.) var. Perfekcja exhibit plant growth inhibitory properties against cress, cucumber, onion and carrot in a dose-dependant manner. This property results from the action of low-and high-molecular components of the extract. The low-molecular component was identified as crotonic acid ((E)-2-butenoic acid). Its presence was also confirmed in other late varieties of carrot. The determined strong herbicidal properties of crotonic acid and its availability after release to soil combined with its high level in seeds suggest that it might be considered as an allelopathic and autotoxic factor in the seeds.
authors.affiliation: Institute of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland. izajm@uni.opole.pl
authors.forename: Izabela
authors.initials: I
authors.lastname: Jasicka-Misiak
authors.forename: Piotr P
authors.initials: PP
authors.lastname: Wieczorek
authors.forename: Paweł
authors.initials: P
authors.lastname: Kafarski
mesh_terms: D019607:Brassicaceae / Q000187:drug effects / Q000254:growth & development; D003437:Crotonates / Q000302:isolation & purification*; D018553:Cucumis sativus / Q000187:drug effects / Q000254:growth & development; D018552:Daucus carota / Q000737:chemistry* / Q000187:drug effects / Q000254:growth & development; D004305:Dose-Response Relationship, Drug; D006540:Herbicides / Q000302:isolation & purification*; D018546:Hypocotyl / Q000187:drug effects / Q000254:growth & development; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D019697:Onions / Q000187:drug effects / Q000254:growth & development; D010936:Plant Extracts / Q000302:isolation & purification; D018517:Plant Roots / Q000187:drug effects / Q000254:growth & development; D012639:Seeds / Q000737:chemistry*
chemical_list: D003437:Crotonates; D006540:Herbicides; D010936:Plant Extracts