title: Plant-growth inhibitory activity of cedrelanolide from Cedrela salvadorensis.
abstract: The effect of cedrelanolide, the most abundant limonoid isolated from Cedrela salvadorensis (Meliaceae), was assayed as a plant-growth inhibitory compound against monocotyledonous and dicotyledonous seeds. This compound inhibited germination, seed respiration, and seedling dry weights of some plant species (Lolium multiflorum, var. Hercules, Triticum vulgare, var. Salamanca, Physalis ixocarpa, and Trifolium alexandrinum). Our results indicate that cedrelanolide interferes with monocot preemergence properties, mainly energy metabolism of the seeds at the level of respiration. In addition, the compound inhibits photophosphorylation, H+ uptake, and noncyclic electron flow. This behavior might be responsible for its plant-growth inhibitory properties and its possible role as an allelopathic agent.
authors.affiliation: Instituto de Química, UNAM, Ciudad Universitaria Coyoacán 04510, México D.F., México. ccespede@servidor.unam.mx
authors.forename: C L
authors.initials: CL
authors.lastname: Céspedes
authors.forename: J S
authors.initials: JS
authors.lastname: Calderón
authors.forename: J R
authors.initials: JR
authors.lastname: Salazar
authors.forename: B
authors.initials: B
authors.lastname: Lotina-Hennsen
authors.forename: R
authors.initials: R
authors.lastname: Segura
mesh_terms: D007887:Fabaceae / Q000187:drug effects* / Q000254:growth & development; D005663:Furans / Q000494:pharmacology*; D018525:Germination / Q000187:drug effects; D006859:Hydrogen / Q000378:metabolism; D036701:Limonins; D008129:Lolium / Q000187:drug effects* / Q000254:growth & development; D008956:Models, Chemical; D010101:Oxygen Consumption / Q000187:drug effects; D010785:Photophosphorylation; D010788:Photosynthesis / Q000187:drug effects; D018517:Plant Roots / Q000187:drug effects / Q000254:growth & development; D018520:Plant Shoots / Q000187:drug effects / Q000254:growth & development; D010946:Plants, Medicinal; D019685:Rosales / Q000737:chemistry*; D012639:Seeds / Q000187:drug effects / Q000254:growth & development; D019657:Solanaceae / Q000187:drug effects* / Q000254:growth & development; D014908:Triticum / Q000187:drug effects* / Q000254:growth & development
chemical_list: D005663:Furans; D036701:Limonins; C430305:cedrelanolide; D006859:Hydrogen