Herbicide resistance in <i>Bromus</i> spp.: a global review

Ribeiro, Victor H. V.; Barroso, Judit; Brunharo, Caio A. C. G.; Mallory-Smith, Carol

doi:10.1017/wsc.2023.42

Cited by 3 publications

(3 citation statements)

References 144 publications

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“…The emergence of herbicide resistance has caused a significant challenge to effective weed control, threatening crop production and food security. More importantly, the fast evolution of herbicide resistance in brome species suggests that herbicide resources available for brome control have been diminishing ( Ribeiro et al., 2023 ).…”

Section: Introductionmentioning

confidence: 99%

The Pro-197-Thr mutation in the ALS gene confers novel resistance patterns to ALS-inhibiting herbicides in Bromus japonicus in China

Liu,

Wu,

et al. 2024

Front. Plant Sci.

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IntroductionBromus japonicus is one of the most notorious agricultural weeds in China. The long-term use of ALS-inhibiting herbicides has led to rapid evolution of herbicide resistance in B. japonicus. B. japonicus population (BJ-R) surviving mesosulfuron-methyl treatment was collected from wheatland. Here, we aimed to confirm the resistance mechanisms in this putative resistant population.MethodsThe dose-reponse tests were used to test the resistance level of the B. japonicus to ALS-inhibiting herbicides. Pretreatment with P450 and GST inhibitors and GST activity assays were used to determine whether P450 or GST was involved in the resistance of the BJ-R population. Sanger sequencing was used to analyse the ALS mutation of the BJ-R population. RT-qPCR was used to confirm the the expression levels of the ALS gene in mesosulfuron-methyl -resistant (BJ-R) and-susceptible (BJ-S) B. japonicus. An in vitro ALS activity assay was used to determine the ALS activity of the BJ-R and BJ-S populations. Homology modelling and docking were used to determine the binding energy of the BJ-R and BJ-S populations with ALS-inhibiting herbicides.ResultsB. japonicus population (BJ-R) was confirmed to be 454- and 2.7-fold resistant to the SU herbicides mesosulfuron-methyl and nicosulfuron, and 7.3-, 2.3-, 1.1- and 10.8-fold resistant to the IMI herbicide imazamox, the TP herbicide penoxsulam, the PTB herbicide pyribenzoxim and the SCT herbicide flucarbazone-sodium, respectively, compared with its susceptible counterpart (BJ-S). Neither a P450 inhibitor nor a GST inhibitor could reverse the level of resistance to mesosulfuron-methyl in BJ-R. In addition, no significant differences in GST activity were found between the BJ-R and BJ-S. ALS gene sequencing revealed a Pro-197-Thr mutation in BJ-R, and the gene expression had no significant differences between the BJ-R and BJ-S. The ALS activity of BJ-R was 106-fold more tolerant to mesosulfuron-methyl than that of BJ-S. Molecular docking showed that the binding energy of the ALS active site and mesosulfuron-methyl was changed from -6.67 to -4.57 kcal mol-1 due to the mutation at position 197.DiscussionThese results suggested that the Pro-197-Thr mutation was the main reason for the high resistance level of BJ-R to mesosulfuron-methyl. Unlike previous reports of the cross-resistance pattern conferred by this mutation, we firstly documented that the Pro-197-Thr mutation confers broad cross-resistance spectrums to ALS-inhibiting herbicides in B. japonicus.

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Section: Introductionmentioning

confidence: 99%

The Pro-197-Thr mutation in the ALS gene confers novel resistance patterns to ALS-inhibiting herbicides in Bromus japonicus in China

Liu,

Wu,

et al. 2024

Front. Plant Sci.

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“…The introduction of competitive native species is also used, which can also effectively limit the development of smooth brome through natural competition [28,29,33,34]. Herbicide treatments can be effective, especially when applied selectively, reducing negative impacts on non-target species [35][36][37][38][39]. Good results are achieved by mechanical removal and controlled burning, which can disrupt the growth cycle of bromegrass and reduce its seed bank in the soil [29,40].…”

Section: Introductionmentioning

confidence: 99%

Smooth Brome (Bromus inermis L.)—A Versatile Grass: A Review

Mackiewicz-Walec,

Żarczyński,

Krzebietke

et al. 2024

Agriculture

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Smooth brome (Bromus inermis L.) is a species of perennial grass with growing economic importance. Initially, this species had attracted interest as a source of animal feed. Over the years, the interest in smooth brome increased significantly due to the growing knowledge about its advantages. The aim of this study was to explore the contemporary significance of smooth brome. This plant is characterized by a high tolerance to many negative environmental factors, such as periodic droughts, low temperatures and salinity, which contributes to its constant presence in the landscape of many countries. The moderate soil requirements of smooth brome, combined with the effective use of soil resources and rational nutrient utilization, contribute to high biomass yields that can reach 13 t/ha DM. The usefulness of this grass species in various management systems has been recognized in numerous research studies. Smooth brome can generate benefits in many branches of the economy. This efficient energy plant is used in paper production, and it is also recommended for the protection of fallow land or the reclamation of degraded land. Smooth brome prevents erosion, enhances biodiversity, and provides shelter for many animal species. This species fits well into the current assumptions of agricultural policy and increasingly demanding environmental standards. According to the latest guidelines, modern agriculture should pursue economic and environmental goals simultaneously. In this context, smooth brome constitutes a valuable link in sustainable development. Due to its numerous advantages, smooth brome not only provides high-quality feed and biomass but also effectively sequesters CO2, improves soil fertility and enhances biodiversity, which makes it an important element of agriculture and environmental protection.

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“…from across Australia, Europe, and the USA. 9,10 The molecular mechanisms conferring resistance to ALS inhibitors in brome grass have been relatively well-studied and are similar to those in other weed species, namely: point mutations of the ALS enzyme which decrease its affinity for the herbicide [11][12][13] ; overexpression of the ALS gene, providing higher levels of enzyme to maintain flux through its metabolic pathway 14 ; and enhanced detoxification of the herbicide, decreasing the concentration of ALS inhibitor in the plant cell. 11,14,15 By contrast, mechanisms of resistance to ACCase inhibitors have been elucidated only in one study with Bromus tectorum L. 16 Extensive research in other resistant grass weeds, however, has revealed that metabolic detoxification of ACCase inhibitors, likely mediated by cytochrome P450 mono-oxygenase(s) (in concert with glutathione transferase in some cases), occurs in a number of species.…”

Section: Introductionmentioning

confidence: 99%

Distribution, frequency and molecular basis of clethodim and quizalofop resistance in brome grass (Bromus diandrus)

Busi,

Goggin,

McKenna

et al. 2023

Pest Management Science

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BACKGROUNDBrome grass (Bromus diandrus Roth) is prevalent in the southern and western cropping regions of Australia, where it causes significant economic damage. A targeted herbicide resistance survey was conducted in 2020 by collecting brome grass populations from 40 farms in Western Australia and subjecting these samples to comprehensive herbicide screening. One sample (population 172‐20), from a field that had had 12 applications of clethodim over 20 years of continuous cropping, was found to be highly resistant to the ACCase‐inhibiting herbicides clethodim and quizalofop, and so the molecular basis of resistance was investigated.RESULTSAll 31 individuals examined from population 172‐20 carried the same resistance‐endowing point mutation causing an aspartate‐to‐glycine substitution at position 2078 in the translated ACCase protein sequence. A wild‐type susceptible population and the resistant population had similar expression levels of plastidic ACCase genes. The level of resistance to quizalofop, either standalone or in mixture with clethodim, in population 172‐20 was lower under cooler growing conditions.CONCLUSIONTarget‐site resistance to ACCase‐inhibiting herbicides, conferred by one ACCase mutation, was selected in all tested brome plants infesting a field with a history of repeated clethodim use. This mutation appears to have been fixed in the infesting population. Notably, clethodim resistance in this population was not detected by the farmer, and a high future incidence of quizalofop resistance is anticipated. Herbicide resistance testing is essential for the detection of evolving weed resistance issues and to inform effective management strategies.This article is protected by copyright. All rights reserved.

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Herbicide resistance in Bromus spp.: a global review

Cited by 3 publications

References 144 publications

The Pro-197-Thr mutation in the ALS gene confers novel resistance patterns to ALS-inhibiting herbicides in Bromus japonicus in China

The Pro-197-Thr mutation in the ALS gene confers novel resistance patterns to ALS-inhibiting herbicides in Bromus japonicus in China

Smooth Brome (Bromus inermis L.)—A Versatile Grass: A Review

Distribution, frequency and molecular basis of clethodim and quizalofop resistance in brome grass (Bromus diandrus)

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