Tolerance of finger millet to propanil.

靖洋, 與語; 皓造, 石塚

doi:10.3719/weed.30.123

Cited by 5 publications

(5 citation statements)

References 17 publications

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“…Leah et al (1994) observed that junglerice resistance to propanil (expressed as aryl acylamidase activity) was increased as growth stage advanced. Yogo and Ishizuka (1985) found that crabgrass [Digitaria ciliaris (Retz.) Koeler] and Echinochloa oryzicola Vasing.…”

Section: Biotypementioning

confidence: 99%

Propanil-Resistant Barnyardgrass (Echinochloa crus-galli) Biotypes Found in Greece¹

Vasilakoglou¹,

Eleftherohorinos²,

Dhima³

2000

Weed Technology

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Greenhouse experiments were conducted in Greece to evaluate the level of propanil resistance in three barnyardgrass biotypes collected from rice fields where propanil had been used for around 25 yr. Suspected resistant biotypes were not controlled by propanil at 2.6, 5.2, 10.4, and 20.8 kg ai/ha, with the highest rate five times greater than the recommended rate. Control was reduced even more when propanil application was delayed until the three- to five-leaf stage. The susceptible barnyardgrass biotype collected from a nontreated propanil area was controlled with 2.6 kg/ha propanil. All barnyardgrass biotypes were effectively controlled by quinclorac (0.75 kg ai/ha) applied either alone at the two- to three-leaf stage or in mixture with propanil (3.5 kg/ha) at the three- to five-leaf stage. Only two of the resistant barnyardgrass biotypes were effectively controlled by azimsulfuron (0.02 kg ai/ha) applied alone at the two- to three-leaf stage, but all biotypes were controlled with the addition of propanil (3.5 kg/ha) at the three- to five-leaf stage. The resistant barnyardgrass biotype, which required the highest rate of propanil to reduce biomass by 50%, also tended to exhibit the most growth potential 7 to 22 d after emergence when compared with the other resistant biotypes or the susceptible biotype. Results clearly show that varying levels of barnyardgrass resistance to propanil exist but that effective control alternatives are available.

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Section: Biotypementioning

confidence: 99%

Propanil-Resistant Barnyardgrass (Echinochloa crus-galli) Biotypes Found in Greece¹

Vasilakoglou¹,

Eleftherohorinos²,

Dhima³

2000

Weed Technology

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“…Propanil and swep have been extensively used to control E. crus‐galli and other grass weeds in several different crops because they have excellent crop tolerance (Table 1). The selectivity of propanil in rice crops is caused by differences in herbicide detoxification by the enzyme aryl acylamidase 27, 44–46. A significant inhibition of 4CL was observed in an in vitro test using enzyme extracts from various plant species, but the inhibition pattern was not coincident with the herbicidal selectivity in plants.…”

Section: Discussionmentioning

confidence: 98%

Propanil and swep inhibit 4‐coumarate:CoA ligase activity in vitro

Yun¹,

Chen²,

Deng³

et al. 2007

Pest Management Science

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4-Coumarate:CoA ligase (4CL, EC 6.2.1.12) in the phenylpropanoid pathway in plants has attracted interest as a novel target for developing effective plant growth inhibitors (PGIs). In a previous study in which the 4CL inhibitory activity of 28 existing herbicides was investigated using an optimized in vitro screening assay, 4CL activity was found to be strongly inhibited by propanil and swep at 100 microM. Here, further experimental evidence is provided to substantiate the previous result. Using 4-coumaric acid as substrate, tobacco 4CL activity was inhibited by propanil or swep in a concentration-dependent manner, with 50% inhibition concentrations (I(50)) of 39.6 and 6 microM respectively. These herbicides also exhibited uncompetitive inhibition towards 4-coumaric acid. Furthermore, 4CLs from several plant species were inhibited by the herbicides within a range from 1 to 50 microM. It is proposed that these herbicides have another site of action as a result of the inhibition of 4CL in the phenylpropanoid pathway, and this enzyme represents a new target site for the development of PGI.

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“…Seeds of P. annua and S. faberi were germinated and grown in a hydroponic culture to the two‐leaf stage according to the method of Yogo and Ishizuka (1985). Seedlings were then supported by packing urethane foam around their leaf sheaths, transferred to flasks containing 120 mL of 0.1% Hyponex (N : P : K = 6.5 : 6 : 19, w/v) nutrient solution, and cultured in a growth room at 25°C with a 14 h day length under 90 μE m −2 s −1 light intensity.…”

Section: Methodsmentioning

confidence: 99%

Mechanism of herbicidal activity of a new cyclohexane‐1,3‐dione, tepraloxydim to Poa annua L.

Takahashi

Yamada

Tanaka

2002

Weed Biology and Management

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Tepraloxydim [(EZ)‐(RS)‐2‐{1‐[(2E)‐3‐chloroallyloxyimino]propyl}‐3‐hydroxy‐5‐perhydropyran‐4‐ylcyclohex‐2‐en‐1‐one] showed high activity against annual bluegrass (Poa annua L.), which is relatively tolerant to sethoxydim [(±)‐2‐(1‐ethoxyiminobutyl)‐5‐[2‐(ethylthio)propyl]‐3‐hydroxycyclohex‐2‐en‐1‐one]. Absorption and translocation rates of tepraloxydim and sethoxydim were higher in P. annua than in Setaria faberi, but the absorption and translocation patterns of tepraloxydim in the two plants were similar to those of sethoxydim. Metabolic rates of tepraloxydim and sethoxydim in P. annua and S. faberi were found to be similar. The concentration for 50% inhibition (I50) of acetyl‐coenzyme A carboxylase (ACCase) with tepraloxydim was approximately 3 × 10−6 mol L−1 for P. annua and 7 × 10−7 mol L−1 for S. faberi. For sethoxydim, the I50 was found to be 2 × 10−6 mol L−1 with the enzyme of S. faberi, while sethoxydim showed a slight effect on ACCase from P. annua activity, even at 10−4 mol L−1. The strong inhibition of ACCase with tepraloxydim is considered to be the major factor contributing to the high herbicidal activity against P. annua. Measuring the whole plant growth response, the ratio of the tepraloxydim I50 dose of P. annua to that of S. faberi (P/S) was found to be 2.4, while the P/S ratio of sethoxydim and a tepraloxydim analog with a propyl chain at R2 were 56.3 and 73.3, respectively. The herbicidal activity against P. annua was remarkably influenced by the length of the R2 alkyl chain, while the effect on S. faberi was not affected. Acetyl‐coenzyme A carboxylase from P. annua also exhibited a higher resistance to the tepraloxydim analog with a propyl chain than to tepraloxydim. These results suggest that a binding site structure of cyclohexane‐1,3‐diones in the ACCase differs between P. annua and S. faberi.

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Tolerance of finger millet to propanil.

Cited by 5 publications

References 17 publications

Propanil-Resistant Barnyardgrass (Echinochloa crus-galli) Biotypes Found in Greece¹

Propanil-Resistant Barnyardgrass (Echinochloa crus-galli) Biotypes Found in Greece¹

Propanil and swep inhibit 4‐coumarate:CoA ligase activity in vitro

Mechanism of herbicidal activity of a new cyclohexane‐1,3‐dione, tepraloxydim to Poa annua L.

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Tolerance of finger millet to propanil.

Cited by 5 publications

References 17 publications

Propanil-Resistant Barnyardgrass (Echinochloa crus-galli) Biotypes Found in Greece1

Propanil-Resistant Barnyardgrass (Echinochloa crus-galli) Biotypes Found in Greece1

Propanil and swep inhibit 4‐coumarate:CoA ligase activity in vitro

Mechanism of herbicidal activity of a new cyclohexane‐1,3‐dione, tepraloxydim to Poa annua L.

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Product

Resources

About

Propanil-Resistant Barnyardgrass (Echinochloa crus-galli) Biotypes Found in Greece¹

Propanil-Resistant Barnyardgrass (Echinochloa crus-galli) Biotypes Found in Greece¹