Journal
PLANTS-BASEL
Volume 12, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/plants12020234
Keywords
chemical herbicides; phytotoxin; natural compounds; biorational herbicides; screening; formulations; synthesis; mechanisms of action
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Weeds are a permanent component of anthropogenic ecosystems, requiring strict control to avoid seed accumulation in the soil. Excessive use of chemical herbicides has led to contamination and the emergence of herbicide-resistant weeds. Therefore, the development of environmentally friendly herbicides with new mechanisms of action is important.
Weeds are a permanent component of anthropogenic ecosystems. They require strict control to avoid the accumulation of their long-lasting seeds in the soil. With high crop infestation, many elements of crop production technologies (fertilization, productive varieties, growth stimulators, etc.) turn out to be practically meaningless due to high yield losses. Intensive use of chemical herbicides (CHs) has led to undesirable consequences: contamination of soil and wastewater, accumulation of their residues in the crop, and the emergence of CH-resistant populations of weeds. In this regard, the development of environmentally friendly CHs with new mechanisms of action is relevant. The natural phytotoxins of plant or microbial origin may be explored directly in herbicidal formulations (biorational CHs) or indirectly as scaffolds for nature-derived CHs. This review considers (1) the main current trends in the development of CHs that may be important for the enhancement of biorational herbicides; (2) the advances in the development and practical application of natural compounds for weed control; (3) the use of phytotoxins as prototypes of synthetic herbicides. Some modern approaches, such as computational methods of virtual screening and design of herbicidal molecules, development of modern formulations, and determination of molecular targets, are stressed as crucial to make the exploration of natural compounds more effective.
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