Herbicide resistant weeds: A call to integrate conventional agricultural practices, molecular biology knowledge and new technologies

Perotti, Valeria; Larran, Alvaro Santiago; Palmieri, Valeria E.; Martinatto, Andrea K; Permingeat, Hugo R.

doi:10.1016/j.plantsci.2019.110255

Cited by 89 publications

(66 citation statements)

References 215 publications

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“…Organic acids with herbicidal effect, such as pelargonic acid, can be interesting management tools for this resistant weed. Their application provokes fast and nonselective desiccation of plant green tissue and the evolution of resistance against this effect is believed unlikely since multiple targets are affected by their action [46]. Mechanical and physical control methods could in theory play an important role for the sustainable management of this GR biotype.…”

Section: Discussionmentioning

confidence: 99%

First Report of Glyphosate-Resistant Biotype of Eleusine Indica (L.) Gaertn. in Europe

et al. 2020

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Glyphosate-resistant biotypes of Eleusine indica (L.) Gaertn. have been detected in Asia, the Americas but not in Europe. The aim of this study was to evaluate resistance levels and possible target site resistance mechanisms of an E. indica biotype (19-1) collected from a plant nursery in Southern Italy where poor glyphosate efficacy was reported. Two dose-response experiments were conducted to evaluate the sensitivity of biotype 19-1 to glyphosate in comparison with two susceptible checks. 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) sequencing was performed to identify possible mutations conferring the resistance. The susceptible biotypes were completely controlled at the glyphosate recommended field dose of 360 g ae ha−1, while 50% of the plants of biotype 19-1 survived at 1440 g ae ha−1. The resistance index of biotype 19-1 ranged between 5.8 and 7.3 for the response variables of fresh weight reduction and plant survival, respectively. All the plants surviving glyphosate application and sampled for DNA analyses had the point mutation P106A. The biotype 19-1 can be confirmed as glyphosate-resistant, representing the first glyphosate-resistant population of E. indica in Europe.

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Section: Discussionmentioning

confidence: 99%

First Report of Glyphosate-Resistant Biotype of Eleusine Indica (L.) Gaertn. in Europe

et al. 2020

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“…Paraquat is an alternative for the management of glyphosate resistant weeds only if resistance is not governed by vacuolar sequestration, since although they have different mechanisms of action, this non-target-site mechanism confers resistance to both herbicides [91]. It is important to note that the management of herbicide resistance is not as simple as described here, since it often involves the participation of different resistance mechanisms, but the timely and appropriate characterization of them could reduce the use of complex mixtures of herbicides in high doses, reducing the impact environmental [92].…”

Section: Scientific and Technical Aspectsmentioning

confidence: 94%

Herbicide Resistance in Brazil: Status, Impacts, and Future Challenges

Cruz¹,

Oliveira²,

Carvalho³

et al. 2020

Pests, Weeds and Diseases in Agricultural Crop and Animal Husbandry Production

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Brazil is a large producer and exporter of crops in global terms. Weeds may be responsible for ~14% of crop losses, depending on the crop system. Herbicides occupy 58% of the Brazilian pesticide market; however, the continuous use of these products and the high selection pressure have led to the emergence of weeds resistant to herbicides. Today, there are 51 weed species reported as being resistant to herbicides in Brazil, of which 17 involves cross and multiple-resistance. Acetolactate synthase (ALS), acetyl coenzyme A carboxylase (ACCase) and 5-enolpiruvylshikimate-3-phosphate synthase (EPSPs) inhibitors are the herbicidal groups with the most resistance cases. Soybean, corn, rice, wheat and cotton present 30, 12, 10, 9 and 8 cases, respectively, occurring mainly in herbicide-resistant crop fields from the Southern and Central West regions of the country. To better understand the dimensions of herbicide resistance, in this chapter, we will explore the size of agricultural activity in Brazil, the pesticide market and the use of herbicides in the main crops. In addition, the agronomic, scientific-technical and economic aspects that have contributed, directly or indirectly, to the selection of resistant weeds will be discussed in order to have an overview of the economic impact of herbicide resistance management.

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“…The prevalent weed species in the experimental plots included A. retroflexus, C. album, black nightshade (Solanum nigrum L.), common purslane (Portulaca oleracea L.), jimsonweed (Datura stramonium L.), and johnsongrass [Sorghum halepense (L.) Pers.]. With rising concern surrounding herbicide-resistant weeds, cost of production, and public health, reduction in herbicide application rate could be one of the integrative multiple strategies (Perotti et al 2020) that should be practiced to reduce crop injury and carryover while maintaining crop yield. However, it was reported that reductions in herbicide use in arid and semiarid areas such as the Mediterranean region are not feasible because of highly competitive dominant weeds (Meissle et al 2010).…”

Section: Weed Speciesmentioning

confidence: 99%

“…Faster evolution of herbicide resistance is, however, revealed under a reduced dose of herbicide application (Manalil et al 2011;Norsworthy et al 2012). Recurrent selection with reduced herbicide rates or sublethal rates over several generations has been reported to result in the rapid evolution of herbicide resistance in species such as rigid ryegrass (Lolium rigidum Gaudin) and Palmer amaranth (Amaranthus palmeri S. Watson) (Manalil et al 2011;Perotti et al 2020). As a result, reduced herbicide rates in combination with an integrated weed management (IWM) program are recommended to mitigate herbicide resistance (Owen et al 2015).…”

Section: Weed Speciesmentioning

confidence: 99%

Role of cover crops and nicosulfuron dosage on weed control and productivity in corn crop

Zandvakili¹,

Hashemi²,

Chaichi

et al. 2020

Weed Sci

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A field experiment was conducted at the research farm of the University of Tehran to evaluate the effect of cover crops and herbicide (nicosulfuron) dosage on corn (Zea mays L.) productivity. Cover crops suppressed weed biomass and density during the fallow period; however, there was no significant effect on weed biomass or weed density in the subsequent corn crop. A mixture of cereal rye (Secale cereale L.) and hairy vetch (Vicia villosa Roth.) was the most weed suppressive cover in the fallow period. Nicosulfuron applied at different amounts suppressed weed biomass and density in corn when compared with weedy plots. Application of 40 g ai ha-1 of nicosulfuron was as effective on weed control as the recommended application. Cover crops did not affect corn growth; however, corn yield was improved with herbicide application.

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Herbicide resistant weeds: A call to integrate conventional agricultural practices, molecular biology knowledge and new technologies

Cited by 89 publications

References 215 publications

First Report of Glyphosate-Resistant Biotype of Eleusine Indica (L.) Gaertn. in Europe

First Report of Glyphosate-Resistant Biotype of Eleusine Indica (L.) Gaertn. in Europe

Herbicide Resistance in Brazil: Status, Impacts, and Future Challenges

Role of cover crops and nicosulfuron dosage on weed control and productivity in corn crop

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