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Cynara cardunculus Crude Extract as a Powerful Natural Herbicide and Insight into the Mode of Action of Its Bioactive Molecules

Authors :
Sofiene Ben Kaab
Laurence Lins
Marwa Hanafi
Iness Bettaieb Rebey
Magali Deleu
Marie-Laure Fauconnier
Riadh Ksouri
M. Haissam Jijakli
Caroline De Clerck
Source :
Biomolecules, Vol 10, Iss 2, p 209 (2020)
Publication Year :
2020
Publisher :
MDPI AG, 2020.

Abstract

The use of chemical herbicides could not only potentially induce negative impacts on the environment, animals, and human health, but also increase the weed resistance to herbicides. In this context, the use of plant extracts could be an interesting and natural alternative to chemical products. It is important to understand the mode of action of their bioactive compounds. This is why we have studied the herbicidal effect of Cynara cardunculus crude extract in terms of inhibition of weeds’ seedling growth and its impact on physiological parameters of treated plantlets, like conductivity, dry weight, and fluorescence, and biochemical parameters linked to oxidative stress. We have observed that C. cardunculus crude extract induces oxidative stress in the treated plants and consequently disturbs the physiological and biochemical functions of the plant cells. We have investigated the herbicidal activity of three bioactive compounds, naringenin, myricitrin, and quercetin, from the C. cardunculus crude extract. In both pre- and post-emergence trials, naringenin and myricitrin were significantly more phytotoxic than quercetin. We suggest that their differential initial interaction with the plant’s plasma membrane could be one of the main signals for electrolyte leakage and production of high levels of phenoxyl radicals.

Details

Language :
English
ISSN :
2218273X and 10020209
Volume :
10
Issue :
2
Database :
Directory of Open Access Journals
Journal :
Biomolecules
Publication Type :
Academic Journal
Accession number :
edsdoj.74897bd0fce24955bafde015cd35b055
Document Type :
article
Full Text :
https://doi.org/10.3390/biom10020209