| Title: | Characterization of Conyza bonariensis Allelochemicals against Broomrape Weeds |
| Author(s): | Peralta AC; Soriano G; Zorrilla JG; Masi M; Cimmino A; Fernandez-Aparicio M; |
| Address: | "Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Naples, Italy. Allelopathy Group, Department of Organic Chemistry, Facultad de Ciencias, Institute of Biomolecules (INBIO), University of Cadiz, C/Avenida Republica Saharaui, s/n, 11510 Puerto Real, Spain. Department of Plant Breeding, Institute for Sustainable Agriculture (IAS), CSIC, Avenida Menendez Pidal s/n, 14004 Cordoba, Spain" |
| DOI: | 10.3390/molecules27217421 |
| ISSN/ISBN: | 1420-3049 (Electronic) 1420-3049 (Linking) |
| Abstract: | "The study of allelopathic activity of plants and the isolation and characterization of the responsible allelochemicals can lead to the development of environment friendly alternative approaches to weed control. Conyza species are invasive weeds that use allelopathic activity as part of a successful strategy to outcompete neighboring plants. Broomrape weeds are parasitic plants that use host-induced germination and the formation of a haustorium as strategies to infect host plants. The control of broomrape infection in most affected crops is limited or non-existing. In the current study, we investigated the allelopathic activity of Conyza bonariensis organic extracts in suicidal germination and radicle growth of four broomrape species (Orobanche crenata, Orobanche cumana, Orobanche minor and Phelipanche ramosa). A bioactivity-driven fractionation of Conyza bonariensis extracts led to the identification of two germination-inducing molecules and two growth-inhibitory compounds. The germination-inducing metabolites had species-specific activity being hispidulin active on seeds of O. cumana and methyl 4-hydroxybenzoate active in P. ramosa. The growth-inhibitory metabolites (4Z)-lachnophyllum lactone and (4Z,8Z)-matricaria lactone strongly inhibited the radicle growth of all parasitic weed species studied. Some structure-activity relationships were found as result of the study herein presented" |
| Keywords: | Humans *Orobanche Plant Weeds *Conyza Pheromones/pharmacology Germination Seeds Lactones/pharmacology Orobanche Phelipanche parasitic plants radicle growth suicidal germination sustainable crop protection; |
| Notes: | "MedlinePeralta, Antonio Cala Soriano, Gabriele Zorrilla, Jesus G Masi, Marco Cimmino, Alessio Fernandez-Aparicio, Monica eng PID2020-114668RB-I00/Spanish Agencia Estatal de Investigacion/ RYC-2015-18961/Spanish Agencia Estatal de Investigacion/ Switzerland 2022/11/12 Molecules. 2022 Nov 1; 27(21):7421. doi: 10.3390/molecules27217421" |
