Two Recessive Gene Inheritance for Triallate Resistance in Avena fatua L.

Kern, Anthony J.; Myers, Tracey M.; Jasieniuk, Marie; Murray, Bruce G.; Maxwell, Bruce D.; Dyer, William E.

doi:10.1093/jhered/93.1.48

Cited by 22 publications

(19 citation statements)

References 10 publications

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“…A. fatua is highly prone to evolving resistance, and indeed single‐resistant and multiple‐resistant populations have been found across western Canada. A. fatua has been reported to be resistant to group A, group B, group K 2 and N. However, after 15–20 years, resistance to triallate (N) in A. fatua has not expanded much and appears to remain at low levels (<10%) in Canada, probably because the pre‐emergence herbicide is not commonly used now. Glasshouse studies have shown that A. fatua populations are up to tenfold more resistant than susceptible lines .…”

Section: Three Major Cases Of Herbicide‐resistant Weeds In Three Cropmentioning

confidence: 99%

Resistance to herbicides inhibiting the biosynthesis of very‐long‐chain fatty acids

Busi

2014

Pest Management Science

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Herbicides that act by inhibiting the biosynthesis of very-long-chain fatty acids (VLCFAs) have been used to control grass weeds in major crops throughout the world for the past 60 years. VLCFA-inhibiting herbicides are generally highly selective in crops, induce similar symptoms in susceptible grasses and can be found within the herbicide groups classified by the HRAC as K3 and N. Even after many years of continuous use, only 12 grass weed species have evolved resistance to VLCFA-inhibiting herbicides. Here, the cases of resistance that have evolved in major grass weed species belonging to the Avena, Echinochloa and Lolium genera in three different agricultural systems are reviewed. In particular we explore the possible reasons why VLCFA herbicides have been slow to select resistant weeds, outline the herbicide mode of action and discuss the resistance mechanisms that are most likely to have been selected.

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Section: Three Major Cases Of Herbicide‐resistant Weeds In Three Cropmentioning

confidence: 99%

Resistance to herbicides inhibiting the biosynthesis of very‐long‐chain fatty acids

Busi

2014

Pest Management Science

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“…Under controlled environments, discrete phenotypic classes of resistance, intermediate, and susceptible entries were observed. Various technique, including field evaluation, greenhouse testing, and laboratory assay, can also be used to evaluate inheritance of herbicide-resistant genes (Kern et al 2002;Sabba et al 2003). Field tests provide the actual conditions; however, they involve more laborious and time-consuming , where C represents the lower asymptote of seedling length (%), D represents the upper asymptote, x represents the dose, GR 50 represents the dose corresponding to seedling length midway between the upper and lower asymptotes, and b represents the slope of the curve around GR 50 ; the upper limit, D, was set to 100% and lower limit, C, was set to 0% within genotype.…”

Section: Discussionmentioning

confidence: 99%

Inheritance of herbicide resistance in two germplasm lines of Clearfield* rice (Oryza sativa L.)

Wenefrida¹,

Utomo²,

Meche³

et al. 2007

Can. J. Plant Sci.

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Wenefrida, I., Utomo, H. S., Meche, M. M. and Nash, J. L. 2007. Inheritance of herbicide resistance in two germplasm lines of Clearfield* rice (Oryza sativa L.). Can. J. Plant Sci. 87: 659-669. Inheritance of imidazolinone resistance in two germplasms of Clearfield rice lines, 93AS3510 and PWC-16, was studied using parents, F 1 hybrids, F 2 populations, and F 2:3 families. Germination tests were conducted in Petri dishes under controlled environments to reveal any discrete phenotypic responses to herbicide treatments. PWC-16 has a herbicide resistance level 4.9 times higher than that of 93AS3510. A concentration of 1 mg L -1 a.i. (active ingredient) of imazethapyr herbicide produced three distinctive response types in 93AS3510 crosses, while a concentration of 10 mg L -1 was required to differentiate the three response types in PWC-16 crosses. The segregation of the herbicide-resistant gene from both Clearfield rice lines fit into the Mendelian 1:2:1 (susceptible:intermediate:resistant) ratio. There was no maternal effect associated with the inheritance of the trait. The imidazolinone resistance, therefore, is governed by a single incomplete dominant nuclear gene. The F 1 hybrid from a cross between resistant and non-resistant lines will produce resistant plants. Clearfield rice provides an effective use of imidazolinone herbicides to control red rice, the most troublesome weed of rice, along with other rice weeds. Preventing transfer of the herbicide-resistant gene into red rice is crucial to maintain its effectiveness.

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“…The cases of recessive gene inheritance of herbicide resistance are rare and limited to few herbicide chemistries. Not surprisingly, these cases have been reported in primarily self-pollinating species (except picloram and clopyralid resistance in yellow starthistle), and the examples include trifluralin resistance in green foxtail [11], quinclorac resistance in false cleaver [12], picloram and clopyralid resistance in yellow starthistle [13], as well as triallate resistance in wild oats [14].…”

Section: Herbicide Resistance and Weed Managementmentioning

confidence: 99%

Understanding Genetics of Herbicide Resistance in Weeds: Implications for Weed Management

J¹

2013

Adv Crop Sci Tech

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Herbicides have made significant contributions to modern agriculture by offering exceptional weed management in crops and also facilitate no-till crop production to conserve soil and moisture. However, repeated field applications of herbicides with the same mechanism of action resulted in selection of herbicide-resistant weeds. A total of 403 confirmed herbicide-resistant weed biotypes have been documented to date (129 dicots and 89 monocots) to 21 of the 25 known herbicide sites of action [1]. Weed Science Society of America (http//www.wssa.net) defines herbicide resistance as the inherited ability of a plant to survive and reproduce following exposure to a dose of herbicide normally lethal to the wild type. In the presence of continued selection pressure (application of herbicides with the same mode of action), the resistant plants increase in frequency over time (generations) [2], thereby transforming a population dominated by individuals resistant to that herbicide.Several factors govern the rate at which the resistant individuals (alleles) become dominant in the population [3]. Genetic factors, such as the initial frequency of resistant alleles present in the population, the dominance relationships among the alleles and fitness cost of the resistance gene(s) can significantly influence evolution of resistance to herbicides. Other factors, such as biology of weed species (e.g. life cycle, seed production capability, mating system), the herbicide and target site properties (chemical structure, herbicide-target site interactions and residual activity), herbicide dose and application performance can impact dynamics of herbicide resistance evolution, as well. This review focuses on how genetic factors influence the evolution and spread of herbicide resistance in weeds and how herbicide use pattern can determine the genetics of herbicide resistance. Additionally, how this information can be useful in both proactive and reactive management of herbicide-resistant weeds is also discussed. Monogenic Target Site Resistance and Polygenic Non Target Site ResistanceMechanisms which confer resistance to herbicides can be categorized into: a) target site resistance (TSR) and non-target site resistance (NTSR). In TSR, mutation(s) in the target site of herbicide results in insensitive or less sensitive herbicide target protein [3], and in essence, involves alteration of the target-site gene (monogenic) [4]. NTSR results from non-target site alterations endowing reduced herbicide uptake/ translocation, increased rates of herbicide detoxification, decreased rates of herbicide activation or sequestration of the herbicide [5]. NTSR, especially if involved herbicide detoxification by cytochrome P450 monooxygenases, is usually governed by many genes (polygenic) and may confer resistance to herbicides with other modes of action [4,6]. However, glutathione S-transferase (GST)-mediated NTSR to triazines in velvetleaf is inherited as a single nuclear gene [7].Herbicide resistance conferred by a single gene with major effect can sprea...

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Two Recessive Gene Inheritance for Triallate Resistance in Avena fatua L.

Cited by 22 publications

References 10 publications

Resistance to herbicides inhibiting the biosynthesis of very‐long‐chain fatty acids

Resistance to herbicides inhibiting the biosynthesis of very‐long‐chain fatty acids

Inheritance of herbicide resistance in two germplasm lines of Clearfield* rice (Oryza sativa L.)

Understanding Genetics of Herbicide Resistance in Weeds: Implications for Weed Management

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