The Ile‐2041‐Val mutation in the ACCase gene confers resistance to clodinafop‐propargyl in American sloughgrass ( Beckmannia syzigachne Steud)

2021 ◽  
Author(s):  
Junzhi Wang ◽  
Yajun Peng ◽  
Wen Chen ◽  
Qin Yu ◽  
Lianyang Bai ◽  
...  
Keyword(s):  
Clodinafop Propargyl

Mechanism of Fenoxaprop-P-ethyl Resistance in Italian Ryegrass (Lolium perennessp.multiflorum) from China

Weed Science ◽  
2017 ◽  
Vol 65 (6) ◽  
pp. 710-717 ◽  
Author(s):  
Pei Zhang ◽  
Han Wu ◽  
Hongle Xu ◽  
Yuan Gao ◽  
Wei Zhang ◽  
...  
Keyword(s):  
Cytochrome P450 ◽  
Target Site ◽  
Italian Ryegrass ◽  
Mechanisms Of Resistance ◽  
Acetyl Coenzyme A ◽  
Resistant Population ◽  
Chinese Wheat ◽  
Moderately Resistant ◽  
Acetyl Coenzyme A Carboxylase ◽  
Clodinafop Propargyl

Italian ryegrass has invaded wheat fields in China and is becoming a predominant, troublesome weed. Fenoxaprop-P-ethyl has been widely used for weed control on Chinese farms since the 1990s. However, overuse has led to fenoxaprop-P-ethyl resistance in Italian ryegrass in Chinese wheat fields. In this study, we identified a putative fenoxaprop-P-ethyl–resistant population of Italian ryegrass, HZYC-6, from Henan province, China. Mutations involving Asp-2078-Gly and Ile-1781-Leu substitutions were identified in the carboxyl-transferase domain of acetyl-coenzyme A carboxylase in this population, and these mutations are the likely cause of the target site–based resistance to fenoxaprop-P-ethyl. In addition, we identified cytochrome P450–mediated metabolism of herbicides (non–target site based resistance) in the HZYC-6 population, indicating that multiple mechanisms of resistance may be segregating in this population. Furthermore, HZYC-6 was also highly resistant to haloxyfop-R-methyl and quizalofop-P-ethyl, moderately resistant to clodinafop-propargyl and sethoxydim, and had low resistance to clethodim and pinoxaden.

Determination of environment-specific dose-response relationships for clodinafop-propargyl on Avena spp.

Weed Research ◽  
2001 ◽  
Vol 41 (4) ◽  
pp. 351-368 ◽  
Author(s):  
R W Medd ◽  
R J Van De Ven ◽  
DI Pickering ◽  
T Nordblom
Keyword(s):  
Dose Response ◽  
Clodinafop Propargyl

Control of wild oat in the year of smooth bromegrass establishment and its effect on the yield and quality of subsequent seed crops

1999 ◽  
Vol 79 (3) ◽  
pp. 447-453 ◽  
Author(s):  
A. L. Darwent ◽  
J. R. Moyer
Keyword(s):  
Avena Fatua ◽  
Visual Control ◽  
Bromus Inermis ◽  
Wild Oat ◽  
Smooth Bromegrass ◽  
Yield And Quality ◽  
Herbicide Treatments ◽  
The Mean ◽  
Seed Yields ◽  
Clodinafop Propargyl

Wild oat (Avena fatua L.) control from three graminicides, clodinafop-propargyl, fenoxaprop-p-ethyl and tralkoxydim, in seedling stands of smooth bromegrass (Bromus inermis L.) seeded alone or with spring wheat (Triticum aestivum L.) was studied in 1991, 1992 and 1993 at Beaverlodge, Alberta. Seed yield and quality were measured for 2 yr after each year of establishment. In the year of establishment, clodinafop-propargyl at 60 g ha–1 consistently provided ≥80% visual control of wild oat growing in smooth bromegrass seeded with wheat, while the mean probability of similar applications of fenoxaprop-p-ethyl at 92 g ha−1 and tralkoxydim at 250 g ha−1 to provide ≥80% visual control of wild oat, averaged over the years of establishment, was 0.91 and 0.92, respectively. Without the wheat companion crop, the mean probability of clodinafop-propargyl to provide ≥80% visual control of wild oat, averaged over establishment years, remained above 0.90, but that for fenoxaprop-p-ethyl and tralkoxydim was reduced to 0.36 and 0.50, respectively. The efficacy of the three graminicides to control wild oat was reduced by tank mixing with bromoxynil plus MCPA, thifensulfuron methyl plus MCPA, or MCPA alone. Establishment with wheat had a major detrimental impact on smooth bromegrass seed yields harvested 1 and 2 yr after each establishment year. Smooth bromegrass seed yields harvested 1 yr following the year of establishment were three times greater where smooth bromegrass was seeded alone as compared with being seeded with wheat. Seed yields harvested 2 yr after the year of establishment followed a similar trend, but the differences were smaller. Herbicide treatments had no effect on either first or second smooth bromegrass seed yields. Wild oat dockage was present only in the first smooth bromegrass seed crop and was approximately three times greater following establishment with wheat than following establishment alone. Percent wild oat dockage was less from plots where herbicides had been applied than from weedy check plots. Differences in percent dockage occurred among herbicide treatments but were small. Key words: Smooth bromegrass, Bromus inermis, wild oat, Avena fatua, graminicides, tank mixtures

Waterborne exposure to clodinafop-propargyl disrupts the posterior and ventral development of zebrafish embryos

2011 ◽  
Vol 30 (7) ◽  
pp. 1576-1581 ◽  
Author(s):  
Wenjun Gui ◽  
Qiaoxiang Dong ◽  
Shengli Zhou ◽  
Xingxing Wang ◽  
Shaoying Liu ◽  
...  
Keyword(s):  
Zebrafish Embryos ◽  
Waterborne Exposure ◽  
Clodinafop Propargyl

Response of winter wheat (Triticum aestivum L.) and weeds to tank mixtures of 2,4-D plus MCPA with clodinafop propargyl

2007 ◽  
Vol 7 (4) ◽  
pp. 209-218 ◽  
Author(s):  
MOHAMMAD ALI BAGHESTANI ◽  
ESKANDAR ZAND ◽  
SAEID SOUFIZADEH ◽  
MOHAMMAD MIRVAKILI ◽  
NASER JAAFARZADEH
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Triticum Aestivum L ◽  
Clodinafop Propargyl

scholarly journals Photocatalytic Degradation of Trifluralin, Clodinafop-Propargyl, and 1,2-Dichloro-4-Nitrobenzene As Determined by Gas Chromatography Coupled with Mass Spectrometry

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Niyaz A. Mir ◽  
A. Khan ◽  
M. Muneer ◽  
S. Vijayalakhsmi
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Photocatalytic Degradation ◽  
Degradation Mechanism ◽  
Gas Chromatography Mass Spectrometry ◽  
Ionization Mass ◽  
Water Medium ◽  
Fragmentation Pattern ◽  
Chemical Structures ◽  
Clodinafop Propargyl

Phototransformation is considered one of the most key factors affecting the fate of pesticides. Therefore, our study focused on photocatalytic degradation of three selected pesticide derivatives: trifluralin (1), clodinafop-propargyl (2), and 1,2-dichloro-4-nitrobenzene (3). The degradation was carried out in acetonitrile/water medium in the presence of titanium dioxide (TiO2) under continuous purging of atmospheric air. The course of degradation was followed by thin-layer chromatography and gas chromatography-mass spectrometry techniques. Electron ionization mass spectrometry was used to identify the degradation species. GC-MS analysis indicates the formation of several intermediate products which have been characterized on the basis of molecular ion, mass fragmentation pattern, and comparison with NIST library. The photocatalytic degradation of pesticides of different chemical structures manifested distinctly different degradation mechanism. The major routes for the degradation of pesticides were found to be (a) dealkylation, dehalogenation, and decarboxylation, (b) hydroxylation, (c) oxidation of side chain, if present, (d) isomerization and cyclization, (e) cleavage of alkoxy bond, and (f) reduction of triple bond to double bond and nitro group to amino.

Metabolic fate of the14C-labeled herbicide clodinafop-propargyl in a sediment–water system

2015 ◽  
Vol 50 (8) ◽  
pp. 533-543 ◽  
Author(s):  
Ye Yuan ◽  
Pascal Weitzel ◽  
Andreas Schäffer ◽  
Burkhard Schmidt
Keyword(s):  
Water System ◽  
Metabolic Fate ◽  
Clodinafop Propargyl
Sign in / Sign up

Export Citation Format

Share Document