A serine-to-threonine mutation in linuron-resistant<i>Portulaca oleracea</i>

Masabni, Joseph; Zandstra, Bernard H.

doi:10.1017/s0043174500091979

Cited by 52 publications

(36 citation statements)

References 39 publications

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“…This same mutation in some atrazine‐resistant weed species shows supersensitivity (negative cross‐resistance) to other herbicide chemistries such as diuron, which target PS II 4. A Ser 264 Thr substitution in a resistant biotype of Portulaca oleracea L conferred a high level of resistance to triazines and ureas 11. The Val 219 Ile substitution confers resistance to atrazine, diuron, dinoseb, ioxynil and metribuzin in Chlamydomonas reinhardtii Dang and higher plants 4.…”

Section: Introductionmentioning

confidence: 98%

“…Double and triple mutations in the psb A gene of Chenopodium rubrum L cell cultures showed different cross‐resistance patterns, with the most favorable combination for metribuzin resistance being amino acid exchanges of Val 219 Ile and Ala 251 Val conferring from 1200‐ to 5000‐fold resistance to metribuzin 16. A mutation of Ser 264 Thr in P oleracea conferred 300‐fold resistance to linuron, 400‐fold to atrazine, 20‐fold to terbacil, but no cross‐resistance to bentazone and low negative cross‐resistance to bromoxynil 11, 17…”

Section: Introductionmentioning

confidence: 99%

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A psbA mutation in Kochia scoparia (L) Schrad from railroad rights‐of‐way with resistance to diuron, tebuthiuron and metribuzin

Mengistu

Christoffers

Lym

2005

Pest Management Science

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Kochia [Kochia scoparia (L) Schrad] has become resistant to many herbicides used in cropland and railroad rights-of-way in North Dakota and Minnesota. Kochia scoparia plants that had survived annual treatments with diuron and tebuthiuron were sampled along railroad rights-of-way in North Dakota and Minnesota. The samples were screened in the greenhouse for resistance to diuron, tebuthiuron, metribuzin and bromoxynil from 0.5x to 32x the recommended use rates. A resistant K scoparia accession (MN-3R) was confirmed with resistance up to 16-fold higher than recommended use rates for tebuthiuron and diuron and up to 4-fold higher for metribuzin. However, the resistant K scoparia accession was susceptible to bromoxynil even at 50% of the recommended use rate. The herbicide binding region of the psbA gene fragment of eight resistant (R) and seven susceptible (S) K scoparia accessions was PCR-amplified and sequenced for detection of mutations. The psbA gene of four R K scoparia accessions was mutated at residue 219 with substitution of isoleucine for valine (GenBank accession number AY251265). The seven S K scoparia accession sequences were wild-type at this residue (GenBank accession number AY251266). The other four R accessions sequences showed a previously known triazine R mutation with substitution of glycine for serine at residue 264. All 15 K scoparia accessions were wild-type at all other psbA residues within the region analyzed. Resistance to diuron, tebuthiuron and metribuzin among the railroad rights-of-way K scoparia is probably due to the mutation at residue 219 of the psbA gene in some plants, but due to the previously reported Ser(264)Gly substitution in other plants. Target-site resistance associated with a change of valine to isoleucine at residue 219 of the psbA target-site in weeds has previously been reported for Poa annua L selected in diuron-treated grass seed fields, and for Amaranthus powelli S Wats selected in linuron-treated carrot fields. This is the first report of the mutation in herbicide-resistant K scoparia.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

A psbA mutation in Kochia scoparia (L) Schrad from railroad rights‐of‐way with resistance to diuron, tebuthiuron and metribuzin

Mengistu

Christoffers

Lym

2005

Pest Management Science

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“…Beuret (1988Beuret ( , 1989) demonstrated that linuron resistance in horseweed was likely not due to a chloroplastic mutation and that resistance of common groundsel to this herbicide may be a result of the slow penetration or rapid metabolization of the chemical. Sequence analysis of the chloroplast D1 protein by Masabni and Zandstra (1999b) showed that linuron-resistant common purslane plants had undergone a serine to threonine substitution at position 264.…”

Section: Resultsmentioning

confidence: 99%

A Common Ragweed (Ambrosia artemisiifolia) Biotype in Southwestern Québec Resistant to Linuron

Saint-Louis¹,

DiTommaso²

2005

Weed technol.

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The degree of resistance to linuron of a common ragweed biotype was investigated. Suspected linuron-resistant plants collected from a carrot field near Sherrington, Québec, were subjected to increasing rates of linuron under glasshouse conditions. Resistance to linuron of the common ragweed biotype was suspected because 33% of plants survived to reproduction after they were sprayed at a rate of 4.5 kg ai/ha, two times the dose rate recommended for linuron in carrots, and also because 3% of plants survived to reproduction after they were sprayed at a rate of 22.5 kg ai/ ha, 10 times the recommended dose. Susceptible plants collected from a field with no prior history of linuron use were all killed when sprayed at the lowest dose rate recommended, 1.125 kg ai/ha. The herbicide-resistance ratio was 29.0 for linuron, and for cross-resistance to atrazine, the ratio was 1.3, indicating that these plants exhibit greater resistance to linuron than to atrazine.

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“…However, variant alleles in the psbA gene that codes for the D1 protein confer resistance to this group of herbicides (reviewed by Gronwald, 1994). However, this substitution (Ser-264-Gly) confers negligible resistance to phenyl urea herbicides (Devine and Shukla, 2000), whereas a slight variant, Ser-264-Thr, confers resistance to both triazines and urea herbicides (Masabni and Zandstra, 1999). However, this substitution (Ser-264-Gly) confers negligible resistance to phenyl urea herbicides (Devine and Shukla, 2000), whereas a slight variant, Ser-264-Thr, confers resistance to both triazines and urea herbicides (Masabni and Zandstra, 1999).…”

Section: Resistance To Photosystem II Inhibitorsmentioning

confidence: 99%

Evolution of Herbicide Resistance in Lolium rigidum under Low Herbicide Rates: An Australian Experience

Manalil

2014

Crop Science

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461Review & inteRpRetation G lobally, weeds are one of the main reasons causing yield loss in crops; in fact, the potential yield loss due to weeds is much higher than from other pests (Oerke, 2006). Herbicides have been used as a simple and reliable technology for weed control. However, intensive and injudicious use of herbicides has resulted in widespread evolution of herbicide-resistant weeds. Worldwide, 218 weed species have evolved herbicide resistance in many agro-ecosystems (Heap, 2013). This has implications for global agricultural productivity.The major factors that influence the evolutionary dynamics of herbicide resistance can be broadly classified into biological, genetic, and operational ( Jasieniuk et al., 1996;Roux and Reboud, 2007). The seed production, seed dormancy, longevity of seeds, mating system (self-pollinating/outcrossing), and migration distance of seed or pollen are the major biological factors that determine the pace of herbicide resistance evolution (Roux and Reboud, 2007). Among the genetic factors, the initial frequency of resistance genes in the population, type of inheritance (dominance or recessive), and fitness cost (selective disadvantage) or advantage of resistance alleles in the presence or absence of herbicide are very crucial (Roux and Reboud, 2007). The spatial and temporal factors related to herbicide application are covered ABSTRACT recent studies have shown the potential of lower than recommended herbicide rates to enhance the herbicide resistance level of a troublesome weed, annual ryegrass (Lolium rigidum Gaud.). rapid evolution of herbicide resistance was possible, because low herbicide rates could select for minor traits and their accumulation through cross-pollination. These studies are highly relevant for the reason that low herbicide rates prevail in global agriculture-particularly in Australia, where recommended herbicide rates are the lowest in the world. In addition, growers use lower than recommended rates for economic reasons and there is no bio-regulatory authority to control the use of herbicides. Indeed, low herbicide rate alone would not lead to rapid evolution of herbicide resistance, but its interaction with the genetic and biological potential of a target weed species is also crucial to decide the pace of herbicide resistance evolution. Alarmingly, L. rigidum is genetically highly variable and possesses many biological and genetic attributes that aid this species to augment resistance mechanisms to combat the never-ending herbicide selection pressure. In this review, the biological and genetic potential of this cross-pollinating species to evolve as one of the most troublesome weeds is examined. In that way, this review would be a practical lesson to frame future herbicide resistance management strategies for troublesome weeds in global agriculture. A diversified herbicide-use pattern and integration of appropriate nonchemical methods are envisaged to minimize the pace of herbicide resistance evolution. Another important message is that herbicides sho...

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A serine-to-threonine mutation in linuron-resistantPortulaca oleracea

Cited by 52 publications

References 39 publications

A psbA mutation in Kochia scoparia (L) Schrad from railroad rights‐of‐way with resistance to diuron, tebuthiuron and metribuzin

A psbA mutation in Kochia scoparia (L) Schrad from railroad rights‐of‐way with resistance to diuron, tebuthiuron and metribuzin

A Common Ragweed (Ambrosia artemisiifolia) Biotype in Southwestern Québec Resistant to Linuron

Evolution of Herbicide Resistance in Lolium rigidum under Low Herbicide Rates: An Australian Experience

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