Occurrence, genetic control and evolution of non-target-site based resistance to herbicides inhibiting acetolactate synthase (ALS) in the dicot weed Papaver rhoeas

Scarabel, Laura; Pernin, Fanny; Délye, Christophe

doi:10.1016/j.plantsci.2015.06.008

Cited by 42 publications

(35 citation statements)

References 35 publications

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“…Our results also contrast with the majority of NTSR inheritance studies reporting that NTSR is multigenic in populations of the allogamous species L. rigidum (Preston, 2003;Busi et al, 2010Busi et al, , 2012Han et al, 2014) et al, 2015) and Papaver rhoeas L. (Scarabel et al, 2015). In contrast, monogenic NTSR has only been reported in the autogamous species E. phyllopogon (Iwakami et al, 2014), with one report in the allogamous species L. rigidum (Yu et al, 2009).…”

Section: Discussioncontrasting

confidence: 99%

Non‐target site resistance to flucarbazone, imazamethabenz and pinoxaden is controlled by three linked genes in Avena fatua

et al. 2017

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SummaryExtensive herbicide usage has led to the evolution of resistant weed populations that cause substantial crop yield losses and increase production costs. The multiple herbicide-resistant (MHR) Avena fatua populations utilised in this study are resistant to members of all selective herbicide families, across five modes of action, available for A. fatua control in US small grain production, and thus pose significant agronomic and economic threats. Resistance to acetolactate synthase and acetylCoA carboxylase inhibitors is not conferred by known target site mutations, indicating that non-target site resistance (NTSR) mechanisms are involved. Understanding the inheritance of NTS MHR is of upmost importance for continued agricultural productivity in the face of the rapid increase in resistant weed populations worldwide. As few studies have examined the inheritance of NTSR in autogamous weeds, we investigated the inheritance and genetic control of NTSR in the highly autogamous, allohexaploid species A. fatua. We found that NTSR in MHR A. fatua is controlled by three separate, closely-linked nuclear genes for flucarbazone-sodium, imazamethabenz-methyl and pinoxaden. The single-gene NTSR inheritance patterns reported here contrast with other examples in allogamous species and illustrate the diversity of evolutionary responses to strong selection.

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Section: Discussioncontrasting

confidence: 99%

Non‐target site resistance to flucarbazone, imazamethabenz and pinoxaden is controlled by three linked genes in Avena fatua

et al. 2017

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“…Along these lines, current research in our laboratory is investigating the hypothesis that similar but distinct GSTbased NTSR mechanisms for atrazine occur in these two waterhemp populations (Evans et al, 2013). The NTSR and MHR mechanisms in grass (Reade et al, 2004;Délye et al, 2011;Cummins et al, 2013) and dicot (Patzoldt et al, 2005;Ma et al, 2013;Scarabel et al, 2015) weeds are providing complex new challenges for weed management and crop production by limiting effective herbicide options available (Preston, 2004;Yu and Powles, 2014). In addition to understanding cross-resistance patterns, genetic and biochemical mechanisms, and the molecular basis for NTSR and MHR in weeds, novel management tools are needed to combat herbicide-resistant weeds or overcome the mechanism(s) that confer resistance to both PRE and POST herbicides (Preston, 2004).…”

Section: Atrazine Postemergence Activity With the Gst Inhibitor Nbd-clmentioning

confidence: 99%

Differential Responses to Preemergence and Postemergence Atrazine in Two Atrazine‐Resistant Waterhemp Populations

Evans

Riechers

2016

Agronomy Journal

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Waterhemp [Amaranthus tuberculatus (Moq) Sauer] is a difficult‐to‐control dicot weed in the United States. Atrazine [6‐chloro‐N‐ethyl‐N’‐(1‐methylethyl)‐1,3,5‐triazine‐2,4‐diamine] is commonly used for preemergence (PRE) and postemergence (POST) waterhemp control in maize (Zea mays L.). Previous research reported that atrazine metabolism via glutathione S‐transferase (GST) activity contributes to atrazine POST resistance in two waterhemp populations from Illinois, designated MCR (McLean County, Illinois, resistant) and ACR (Adams County, Illinois, resistant). Objectives were to quantify responses of these populations to atrazine PRE and determine if the combination of a GST inhibitor and atrazine PRE or POST increases their control. Dose‐response analyses indicated MCR was resistant to atrazine PRE relative to ACR or WCS (Wayne County sensitive; herbicide‐sensitive population), despite MCR and ACR exhibiting equivalent levels of atrazine resistance POST. The ACR response to atrazine PRE (LD50) was intermediate compared with MCR and WCS. Seedling survival of ACR was reduced by 4‐chloro‐7‐nitrobenzofurazan (NDB‐Cl; a GST inhibitor) and atrazine PRE more than atrazine PRE alone, but not in MCR. Atrazine following NBD‐Cl applied POST inhibited seedling growth in ACR, but not in MCR. Enhanced atrazine activity with NBD‐Cl further supports rapid metabolism via GSTs as the main atrazine‐resistance mechanism in ACR. GST(s) that metabolize atrazine in MCR may not have been completely inhibited by NBD‐Cl, indicating that similar yet distinct atrazine‐resistance mechanisms exist in MCR compared to ACR. In conclusion, atrazine PRE (with or without NBD‐Cl) still controls ACR when applied at typical field‐use rates in maize, but the length of residual activity may be shorter than in sensitive populations.Core Ideas Two waterhemp populations are resistant to atrazine POST due to increased metabolism by GST enzymes. Since atrazine can also be soil applied, quantifying the levels of resistance in these populations is important for weed management in maize. The MCR population was resistant to atrazine PRE and displayed a higher level of resistance to atrazine PRE than the ACR population. NBD‐Cl, a metabolic inhibitor of GST enzymes, enhanced atrazine activity in the ACR population but not MCR. The length of residual activity of atrazine may be shorter for controlling these populations in maize compared with sensitive populations.

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“…In P. rhoeas , ALS alleles carrying a mutation at codon 197 are by far the most widespread and frequent resistance mechanism . However, non‐target‐site‐based mechanisms causing resistance to ALS inhibitors have been identified in plants also carrying mutant ALS alleles . The occurrence of non‐target‐site‐based resistance to ALS inhibitors in S. vulgaris is thus an issue that needs investigation.…”

Section: Discussionmentioning

confidence: 98%

“…As the resistance patterns conferred by non‐target‐site‐based resistance mechanisms are currently unpredictable, this hypothesis is compatible with the phenotypic variation observed among plants with the same genotype at ALS and with plants in population 22‐Bou being overall more resistant to some herbicides and less resistant to others than plants in population 22‐Erq, in spite of carrying the same Leu‐197 ALS1 allele. Non‐target‐site‐based resistance is considered to be the major cause of resistance to ALS inhibitors in grass weeds, but has only been demonstrated to date in three broadleaf weed species: Amaranthus hybridus , Sinapis arvensis and Papaver rhoeas . The situation of S. vulgaris very much resembles that of the diploid P. rhoeas (corn poppy).…”

Section: Discussionmentioning

confidence: 99%

Genetic basis, evolutionary origin and spread of resistance to herbicides inhibiting acetolactate synthase in common groundsel (Senecio vulgaris)

Délye

Causse

Michel

2015

Pest Management Science

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Occurrence, genetic control and evolution of non-target-site based resistance to herbicides inhibiting acetolactate synthase (ALS) in the dicot weed Papaver rhoeas

Cited by 42 publications

References 35 publications

Non‐target site resistance to flucarbazone, imazamethabenz and pinoxaden is controlled by three linked genes in Avena fatua

Non‐target site resistance to flucarbazone, imazamethabenz and pinoxaden is controlled by three linked genes in Avena fatua

Differential Responses to Preemergence and Postemergence Atrazine in Two Atrazine‐Resistant Waterhemp Populations

Genetic basis, evolutionary origin and spread of resistance to herbicides inhibiting acetolactate synthase in common groundsel (Senecio vulgaris)

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