Enhanced herbicide metabolism induced by 2,4‐D in herbicide susceptible <i>Lolium rigidum</i> provides protection against diclofop‐methyl

Han, Heping; Yu, Qin; Cawthray, Gregory R.; Powles, Stephen B.

doi:10.1002/ps.3552

Cited by 44 publications

(59 citation statements)

References 18 publications

(43 reference statements)

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“…For example, a population of prickly lettuce (Lactuca serriola L.) resistant to 2,4-D displayed reduced uptake and translocation compared with a sensitive population, but rates of 2,4-D metabolism not different (Riar et al 2011). It is important to note, however, that these two mechanisms may be physiologically linked; i.e., rapid production of polar metabolites often leads to measurements of decreased translocation since polar metabolites and herbicide conjugates are typically less phloem mobile than parent compounds (Han et al 2013), most likely due to permanent sequestration in the vacuole via phase III transport and detoxification reactions (Devine and Hall 1990;Riechers et al 2010).…”

Section: Number Of Dicot Weed Species and Recentmentioning

confidence: 99%

2,4-D Past, Present, and Future: A Review

Peterson

McMaster

Riechers³

et al. 2016

Weed technol.

240

208

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Since its discovery and initial commercialization in the 1940s, 2,4-D has been an important tool for weed control in a wide variety of crop and noncrop uses. Work studying its chemistry, physiology, mode of action, toxicology, environmental behavior, and efficacy has not only helped elucidate the characteristics of 2,4-D but also provided basic methods that have been used to investigate the properties of hundreds of herbicides that followed it. Much of the information published by researchers over 60 yr ago is still pertinent to understanding the performance of 2,4-D today. Further, new studies continue to be published, especially regarding the mechanisms of 2,4-D action at the molecular level. New uses for 2,4-D, sometimes enabled by biotechnology, continue to be developed. This review strives to provide an overall understanding of 2,4-D activity in plants, plant sensitivity to 2,4-D, toxicological impacts, and current and future uses.

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Section: Number Of Dicot Weed Species and Recentmentioning

confidence: 99%

2,4-D Past, Present, and Future: A Review

Peterson

McMaster

Riechers³

et al. 2016

Weed technol.

240

208

View full text Add to dashboard Cite

show abstract

“…In contrast, non-target-site resistance (NTSR) is generally considered to be an intricate issue that can be due to enhanced metabolic degration of the herbicides. NTSR is relatively difficult to study than TSR, and NTSR is consindered to be an destructive threating for weed management [16][17][18][19][20][21].…”

Section: Commercialmentioning

confidence: 99%

Cross-resistance patterns to ACCase-inhibitors in American sloughgrass (Beckmannia syzigachne Steud.) homozygous for specific ACCase mutations

Liu

Yuan

et al. 2016

Pesticide Biochemistry and Physiology

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“…Rigid ryegrass is ranked among the weeds exhibiting most reported cases of herbicide resistance (Heap, 2017) and, currently, resistant populations appear to be highly frequent in surveyed countries, including Australia (Owen et al, 2007) and Spain (Loureiro et al, 2010), among others (Kaundun et al, 2011; Bostamam et al, 2012). First reports of herbicide resistance in this weed species date back to the early 1980s with ACCase- and ALS-inhibiting herbicides being involved (Heap and Knight, 1982). Thereafter, additional cases of resistance across different herbicide modes of action, and also multiple and cross resistance (Heap and Knight, 1986; Fernandez et al, 2016), have been repeatedly reported across 12 countries (Heap, 2017), including resistance to glyphosate.…”

Section: Introductionmentioning

confidence: 99%

Evidence, Mechanism and Alternative Chemical Seedbank-Level Control of Glyphosate Resistance of a Rigid Ryegrass (Lolium rigidum) Biotype from Southern Spain

Fernández-Moreno

Bastida

2017

Front. Plant Sci.

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Rigid ryegrass (Lolium rigidum) is one of the most troublesome weeds in different crops in the Mediterranean region. A rigid ryegrass biotype from an olive grove in Jaén province (Andalusía, southern Spain), potentially resistant to glyphosate (RG), was tested for its resistance level through dose-response assays using a susceptible biotype (SG). To test the hypothesis of a non-target-site-based resistance, as point mutations are far less common mechanisms of glyphosate resistance, studies were also conducted to elucidate whether resistance was associated with biochemical, metabolism, molecular and/or physiological mechanisms. Alternative herbicide-based control options, including single-herbicide or herbicide mixtures with glyphosate, applied at seedling, tillering or full heading stages, were tested in field experiments for 2 years for their efficacy against rigid ryegrass plants and their effects on the soil seed bank. Resistance levels of the RG biotype were 23- (LD50) and 7-fold (GR50) higher compared to the SG biotype. The SG biotype exhibited a significantly greater shikimic acid accumulation than the RG one. At 96 HAT, 58 and 89% of applied 14C-glyphosate was up taken by leaves of RG and SG biotype plants, respectively, and, at this time, a significantly higher proportion of the glyphosate taken up by the treated leaf remained in its tissue in RG plants compared to the SG ones. The RG biotype did not reveal any point mutation in the glyphosate target site EPSP synthase. Overall, results confirmed reduced glyphosate uptake and translocation as being the mechanism involved in glyphosate resistance in the RG biotype. RG biotype responses to the alternative treatments tested in situ indicated that herbicide applications at the later growth stage tended to be less effective in terms of immediate effects on population size than earlier applications, and that only in some cases, the removal of at least 85% of the RG biotype was achieved. However, with few exceptions, the alternative treatments tested appeared to be highly effective in reducing the seed bank irrespective of the growth stage. The frequency of the resistant phenotype in the progeny of surviving plants of the RG biotype was dependent on treatment. Results suggest that a potential exists for effective management of glyphosate-resistant rigid ryegrass in olive groves in southern Spain.

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Enhanced herbicide metabolism induced by 2,4‐D in herbicide susceptible Lolium rigidum provides protection against diclofop‐methyl

Cited by 44 publications

References 18 publications

2,4-D Past, Present, and Future: A Review

2,4-D Past, Present, and Future: A Review

Cross-resistance patterns to ACCase-inhibitors in American sloughgrass (Beckmannia syzigachne Steud.) homozygous for specific ACCase mutations

Evidence, Mechanism and Alternative Chemical Seedbank-Level Control of Glyphosate Resistance of a Rigid Ryegrass (Lolium rigidum) Biotype from Southern Spain

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