Safening of DPX-F5384 on rice by combination with thiocarbamate herbicides.

Yuyama, Takeshi; Sweetser, Philip B.; Ackerson, Robert C.; Takeda, Shunji

doi:10.3719/weed.31.164

Cited by 9 publications

(4 citation statements)

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“…In particular, the carbamothioate herbicides, such as dimepiperate, and the urea herbicides, such as dymron, were shown to have some ability to protect rice against stunting injury caused by sulfonylurea herbicides 11. 14–17 The enhancement of sulfonylurea herbicide metabolism, including O ‐demethylation, in the presence of safeners has been demonstrated in vivo 11. 13, 14 However, no evidence was found regarding the formation of the O ‐desmethyl metabolite of PSE in vitro , and there is limited information about cytochrome P‐450‐dependent enzymes related to safening effects against sulfonylurea herbicide injury.…”

Section: Introductionmentioning

confidence: 99%

Involvement of cytochrome P‐450 enzyme activity in the selectivity and safening action of pyrazosulfuron‐ethyl

Yun¹,

Shim

Usui

2001

Pest Management Science

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To investigate the selectivity and safening action of the sulfonylurea herbicide pyrazosulfuron-ethyl (PSE), pyrazosulfuron-ethyl O-demethylase (PSEOD) activity involving oxidative metabolism by cytochrome P-450 was studied in rice (Oryza sativa L cv Nipponbare) and Cyperus serotinus Rottb. Cytochrome P-450-dependent activity was demonstrated by the use of the inducers 1,8-naphthalic anhydride and ethanol, the herbicides PSE, bensulfuron-methyl, dimepiperate and dymron, or the inhibitor piperonyl butoxide (PBO). Growth inhibition in C serotinus seedlings was more severe than that in rice seedlings. O-Dealkylation activities of PSE were induced differently in rice and in C serotinus, with distinctly higher activity in rice seedlings. The induced PSEOD activities were slightly inhibited by PBO in rice seedlings, whereas they were strongly inhibited in C serotinus seedlings. Dimepiperate and dymron were effective safeners of rice against PSE treatment. Treatments with herbicide alone resulted in less induction of PSEOD activity compared with combined treatments of the herbicide and safener. PSEOD activity in rice seedlings induced with herbicide alone was strongly inhibited by PBO, whereas it was weakly inhibited in rice seedlings induced with combinations of PSE and two safeners. These results suggest that O-demethylation by cytochrome P-450 enzymes may be involved in the metabolism of PSE and may contribute to its selectivity and safening action. Furthermore, these results suggest the existence of a multiple form of cytochrome P-450 in plants.

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Section: Introductionmentioning

confidence: 99%

Involvement of cytochrome P‐450 enzyme activity in the selectivity and safening action of pyrazosulfuron‐ethyl

Yun¹,

Shim

Usui

2001

Pest Management Science

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“…piper idine-l-carbo- thioate] 1-3,6,9,12,14) It has been suggested that this safening action is mainly induced by the enhancement of bensulf uron-methyl detoxification and by the inhibition of bensulfuron-methyl absorption from roots9, 14) The saf ening effect of dimepiperate on rice growth inhibition caused by pyrazosulfuronethyl has not yet been investigated.…”

mentioning

confidence: 99%

Differential Growth Response of Rice Cultivars to Pyrazosulfuron-ethyl.

Kobayashi¹,

Yogo²,

Sugiyama³

1995

J. Weed Sci. Tech

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In growth response to pyrazosulf uron-ethyl [ethyl 5-[[3-(4, 6-dimethoxypyrimidin-2-yl) ureido] sulf onyl]-1 H-1-methylpyrazole-4-carboxylate], indica rice cultivars were more tolerant than japonica cultivars in a manner similar to bensulfuronmethyl [methyl a-[[3-(4, 6-dimethoxypyrimidin-2-yl) ureido] sulf onyl]-o-toluate]. The growth inhibition by pyrazosulf uronethyl and bensulfuron-metyl was reduced by dimepiperate[S-(a, a-dimethylbenzyl) piperidine-l-carbothioate] in indica and japonica rice cultivars but not in Cyperus serotinus. The mechanism of differential tolerance of rice cultivars to pyrazosulfuron-ethyl was discussed in relation to the safening effect of dimepiperate on the growth inhibition by the herbicides.

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“…4) Moreover, since SU herbicides used in paddy elds in Japan are not su ciently effective against grass weeds, other grass herbicides are o en added. 5,6) erefore, most one-shot herbicides currently used contain three or four active ingredients. 7) Pyrimisulfan (2′ -[(4,6-dimethoxypyrimidin-2-yl)(hydroxy) methyl]-1,1-di uoro-6′ -(methoxymethyl)methanesulfonanilide) found and developed by Kumiai Chemical Industry Co., Ltd., K-I Chemical Research Institute Co., Ltd., and Ihara Chemical Industry Co., Ltd., is a sulfonanilide herbicide (Fig.…”

Section: Introductionmentioning

confidence: 99%

Properties of controlled-release formulation of pyrimisulfan as a one-shot herbicide in a paddy field

et al. 2012

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Pyrimisulfan is a novel sulfonanilide herbicide with high herbicidal activities against major troublesome weeds in paddy elds. To use this chemical compound as a one-shot herbicide for rice, we have developed a controlled-release formulation, pyrimisulfan-1 kg granule (containing 6.7 g a.i.). is granule formulation applied at pre-emergence to the three-leaf stage at 10 kg/ha e ciently controlled troublesome weeds, such as Echinochloa spp., perennial weeds, and sulfonylurea-resistant weeds. Furthermore, pyrimisulfan-1 kg granule exhibited consistent herbicidal e cacy under simulated over ow conditions. erefore, pyrimisulfan-1 kg granule is suitable for use as a one-shot herbicide and is an e ective tool for rice cultivation systems requiring reduced pesticide applications.

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Safening of DPX-F5384 on rice by combination with thiocarbamate herbicides.

Cited by 9 publications

References 0 publications

Involvement of cytochrome P‐450 enzyme activity in the selectivity and safening action of pyrazosulfuron‐ethyl

Involvement of cytochrome P‐450 enzyme activity in the selectivity and safening action of pyrazosulfuron‐ethyl

Differential Growth Response of Rice Cultivars to Pyrazosulfuron-ethyl.

Properties of controlled-release formulation of pyrimisulfan as a one-shot herbicide in a paddy field

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