Phytotoxic effects and mechanism of action of essential oils and terpenoids
UNIVERSAL IDENTIFIER: http://hdl.handle.net/11093/2236
EDITED VERSION: https://www.mdpi.com/2223-7747/9/11/1571
UNESCO SUBJECT: 3101.06 Herbicidas ; 2417 Biología Vegetal (Botánica) ; 2511.08 Mecánica de Suelos (Agricultura)
DOCUMENT TYPE: article
Weeds are one of the major constraints in crop production affecting both yield and quality. The excessive and exclusive use of synthetic herbicides for their management is increasing the development of herbicide-resistant weeds and is provoking risks for the environment and human health. Therefore, the development of new herbicides with multitarget-site activity, new modes of action and low impact on the environment and health are badly needed. The study of plant–plant interactions through the release of secondary metabolites could be a starting point for the identification of new molecules with herbicidal activity. Essential oils (EOs) and their components, mainly terpenoids, as pure natural compounds or in mixtures, because of their structural diversity and strong phytotoxic activity, could be good candidates for the development of new bioherbicides or could serve as a basis for the development of new natural-like low impact synthetic herbicides. EOs and terpenoids have been largely studied for their phytotoxicity and several evidences on their modes of action have been highlighted in the last decades through the use of integrated approaches. The review is focused on the knowledge concerning the phytotoxicity of these molecules, their putative target, as well as their potential mode of action.
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