Molecular basis of resistance to imazethapyr in redroot pigweed (Amaranthus retroflexus L.) populations from China

Chen, Jinyi; Huang, Zhengxu; Zhang, Chaoxian; Huang, Hongjuan; Wei, Shugang; Chen, Jingchao; Wang, Xu

doi:10.1016/j.pestbp.2015.04.002

Cited by 27 publications

(26 citation statements)

References 30 publications

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“…This lower AHAS activity associated with the Trp574Leu mutation is not in agreement with the results of Yu et al . and Chen et al . who found higher activity in the enzyme in L. rigidum and A. retroflexus .…”

Section: Discussioncontrasting

confidence: 82%

“…reported a level of resistance >8333, > 1333 and 10 for Apera spica‐venti , L. rigidum and Poa annua , respectively, in response to different SU herbicides. In addition, Chen et al . showed a factor of resistance of 268 for A. retroflexus in response to IMI imazethapyr.…”

Section: Discussionmentioning

confidence: 99%

“…Herbicide target‐site mutations can alter enzyme functionality because some amino acid residues are important for herbicide binding and for maintaining AHAS activity . Depending on the plant species and the particular AHAS herbicide resistance‐endowing amino acid substitution, studies have found a reduction, an increase or no modification in AHAS activity. However, alteration of AHAS functionality does not necessarily translate into whole‐plant pleiotropic effects .…”

Section: Introductionmentioning

confidence: 99%

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AHAS Trp574Leu substitution in Raphanus sativus L.: screening, enzyme activity and fitness cost

Vercellino

Pandolfo

Breccia

et al. 2018

Pest Management Science

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Section: Discussioncontrasting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

AHAS Trp574Leu substitution in Raphanus sativus L.: screening, enzyme activity and fitness cost

Vercellino

Pandolfo

Breccia

et al. 2018

Pest Management Science

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“…ALS mutation diversity has been confirmed in many ALS inhibitor–resistant weeds. For example, amino acid substitution at Pro-197, Asp-376, and Trp-574 were found in D. sophia (Yang et al 2018a), kochia [ Bassia scoparia (L.) A. J. Scott] (Warwick et al 2008), and wild mustard ( Sinapis arvensis L.) (Warwick et al 2005; Whaley et al 2007); Ala-122, Pro-197, Asp-376, and Trp-574 mutations were identified in wild radish ( Raphanus raphanistrum L.) (Han et al 2012; Yu et al 2012); and Ala-122, Pro-197, Ala-205, Asp-376, Trp-574, and Ser-653 mutations were observed in redroot pigweed ( Amaranthus retroflexus L.) (Chen et al 2015; Huang et al 2016; McNaughton et al 2005). In this study, the molecular basis of ALS mutations has been well studied, and five different ALS mutations (Pro-197-Ser/Leu/His, Asp-376, and Trp-574) were established in tribenuron-methyl–resistant G. aprine .…”

Section: Resultsmentioning

confidence: 99%

Target-Site Resistance Mechanisms to Tribenuron-methyl and Cross-resistance Patterns to ALS-inhibiting Herbicides of Catchweed Bedstraw (Galium aparine) with Different ALS Mutations

Deng

Cai

et al. 2018

Weed Sci

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Catchweed bedstraw (Galium aparine L.) is a problematic dicot weed that occurs in major winter wheat (Triticum aestivum L.) fields in China. Tribenuron-methyl has been widely used to control broadleaf weeds since 1988 in China. However, overuse has led to the resistance evolution of G. aparine to tribenuron-methyl. In this study, 20 G. aparine populations collected from Shandong and Henan provinces were used to determine tribenuron-methyl resistance and target-site resistance mechanisms. In dose–response experiments, 12 G. aparine populations showed different resistance levels (2.92 to 842.41-fold) to tribenuron-methyl compared with the susceptible population. Five different acetolactate synthase (ALS) mutations (Pro-197-Leu, Pro-197-Ser, Pro-197-His, Asp-376-Glu, and Trp-574-Leu) were detected in different resistant populations. Individuals heterozygous for Pro-197-Ser and Trp-574-Leu mutations were also observed in a resistant population (HN6). In addition, pHB4 (Pro-197-Ser), pHB7 (Pro-197-His), pHB8 (Pro-197-Leu), pHB5 (Asp-376-Glu), and pHB3 (Trp-574-Leu) subpopulations individually homozygous for specific ALS mutations were generated to evaluate the cross-resistance to ALS-inhibiting herbicides. The pHB4, pHB7, pHB8, pHB5, and pHB3 subpopulations all were resistant to sulfonylurea, pyrazosulfuron-ethyl, triazolopyrimidine, flumetsulam, sulfonylamino-carbonyl-triazolinone, flucarbazone-sodium, pyrimidinyl thiobenzoate, pyribenzoxim, and the imidazolinone imazethapyr. These results indicated the diversity of the resistance-conferring ALS mutations in G. aparine, and all these mutations resulted in broad cross-resistance to five kinds of ALS-inhibiting herbicides.

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“…(Amini et al, 2014), and corn (Zea mays) (Sheibany et al, 2009;Ghanizadeh et al, 2014). Unfortunately, Chen et al (2015) confirmed redroot pigweed to have evolved resistance to acetolactate synthase (ALS) inhibitors in China, which makes it difficult its control in cropping system. ALS-and protoporphyrinogen oxidase (PPO)-inhibiting herbicides are the most commonly used postemergence herbicides in soybean fields in northeast China.…”

Section: Introductionmentioning

confidence: 99%

Multiple resistance to thifensulfuron-methyl and fomesafen in redroot pigweed ( Amaranthus retroflexus L.) from China

Wang

Guo

Zhang

et al. 2017

Chil. j. agric. res.

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311Redroot pigweed (Amaranthus retroflexus L.) is a troublesome weed infesting soybean (Glycine max [L.] Merr.) productions in China. One redroot pigweed population, collected from Heilongjiang (HLJ) Province, China, was suspected to be resistant to thifensulfuronmethyl and fomesafen. The other one redroot pigweed population, collected from Shandong (SD) Province, was susceptible. The study aimed to characterize the level of thifensulfuron-methyl and fomesafen resistance using HLJ population and identify the potential resistance mechanisms to thifensulfuron-methyl. The sensitivity to other herbicides with and without the same target site was also evaluated. Acetolactate synthase (ALS) gene sequencing revealed that Trp 574 Leu or Ala 205 Val amino acid substitution were present in the HLJ population. Whole-plant herbicide bioassays showed that, compared with SD population, HLJ population displayed high level of resistance to thifensulfuron-methyl and moderate resistance to fomesafen. The 50% growth reduction (GR 50 ) value of thifensulfuron-methyl with malathion pretreatment was reduced by 23%, suggesting that both target-site resistance and non-target-site resistance mechanisms were present in thifensulfuron-methyl resistance of redroot pigweed. Cross-resistant patterns showed that the HLJ population evolved resistance to pyrithiobac-sodium, pyroxsulam, imazethapyr and fluoroglycofen, but susceptible to bentazone.Key words: Acetolactate synthase, gene mutation, protoporphyrinogen oxidase, multiple resistance. ABSTRACTMultiple resistance to thifensulfuronmethyl and fomesafen in redroot pigweed (Amaranthus retroflexus L.) from China

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Molecular basis of resistance to imazethapyr in redroot pigweed (Amaranthus retroflexus L.) populations from China

Cited by 27 publications

References 30 publications

AHAS Trp574Leu substitution in Raphanus sativus L.: screening, enzyme activity and fitness cost

AHAS Trp574Leu substitution in Raphanus sativus L.: screening, enzyme activity and fitness cost

Target-Site Resistance Mechanisms to Tribenuron-methyl and Cross-resistance Patterns to ALS-inhibiting Herbicides of Catchweed Bedstraw (Galium aparine) with Different ALS Mutations

Multiple resistance to thifensulfuron-methyl and fomesafen in redroot pigweed ( Amaranthus retroflexus L.) from China

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