Abstract
Editorial: Herbicide Resistance in Weeds: Early Detection, Mechanisms, Dispersal, New Insights and Management Issues
Highlights
Specialty section: This article was submitted to Agroecology, a section of the journal Frontiers in Ecology and Evolution
Chemical weed control by means of the use of herbicides was broadly adopted in many agricultural areas, reducing the labor costs and the mechanical means dependence
Their findings revealed that mesotrione resistance in A. palmeri is conferred primarily by rapid detoxification of mesotrione; increased HPPD gene expression contributes to the resistance mechanism in the evolution of herbicide resistance in this naturally occurring weed species
Summary
Specialty section: This article was submitted to Agroecology, a section of the journal Frontiers in Ecology and Evolution. Bracamonte, Fernández-Moreno, Bastida, et al reported the first case of herbicide resistance in Cuba Their results revealed a glyphosate resistant (GR) population of Chloris elata, with its resistance involving both non-target site and target-site mechanisms. The objective of the study conducted by Nakka et al was to investigate the mechanism of HPPD-inhibitor (mesotrione) resistance in A. palmeri Their findings revealed that mesotrione resistance in A. palmeri is conferred primarily by rapid detoxification (non-target-site based) of mesotrione; increased HPPD gene expression (target-site based) contributes to the resistance mechanism in the evolution of herbicide resistance in this naturally occurring weed species. No EPSPS mutations were detected despite the presence of resistant plants, strongly suggesting that non-target-site-based mechanisms confer resistance to glyphosate in these populations. It was suggested that elevated activity of enzymatic processes at high-temperature may induce rapid and efficient pinoxaden metabolism leading to temperature-dependent herbicide resistance
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