To avoid the harmful effects of synthetic herbicides on human health and environment, and the development of herbicide resistance in weeds, considerable effort has been devoted to finding alternative products derived from natural sources. Allelopathy is the biological phenomenon of chemical interactions, and must be taken into account in addressing weed problems in future sustainable agriculture. Essential oils are volatile and concentrated liquids extracted from different parts of plants. Bioactive compounds found in EOs, especially terpenes and terpenoids possess a wide range of biological activities including anticancer, antimicrobial, anti-inflammatory, antioxidant, antiallergic and allelopathic. Essential oils from many aromatic, cultivated plants and weeds are sources of compounds with bioherbicidal potential. This review is focused on chemical composition of essential oils, traditional and innovative methods of extraction and gas chromatography-mass spectrometry, which we can use for analyze the composition of the essential oil. Also, this review discusses possible ways of testing the bioherbicidal properties of essential oils. Knowledge of essential oil extraction and identification methods is necessary for further studies, in order to evaluate the phytotoxic activity of these compounds under controlled conditions, determine their activity in the field, evaluate their safety, and assess their modes of action.
This study focused on characterizing chemically and evaluating in vitro allelopathic and bioherbicidal potential of secondary metabolites extracted from the stem of Cuscuta campestris in seed germination, early seedling growth and early plant growth of Amaranthus retroflexus and Portulaca oleracea. The combined effects of stem extract and a reduced dose of herbicide metribuzin were also examined. Plant extract contained 17 phenolic compounds and the most abundant phenols were flavonoids: quercetin, (+)-catechin, daidzin, luteolin, and rutin. The seeds of P. oleracea were less sensitive than the seeds of A.retroflexus. The seed bioassay confirmed the inhibitory effect of stem extract on germination and early growth of both weed seedlings at concentrations of 0.75 % and 1 %, and a minor inhibitory effect in the plant bioassay. On the other hand, a synergy of C. campestris stem extract and metribuzin was revealed, as their combination achieved better results in the control of both weed species. Based on obtained data C. campestris stem extract could be a potential source of naturalbased weed control molecules.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.