Absorption, translocation and metabolism of naproanilide in cyperus serotinus rottb.

勝一郎, 小林; 勝紀, 一瀬

doi:10.3719/weed.32.46

Cited by 3 publications

(3 citation statements)

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“…Clomeprop and naproanilide are used to control broad‐leaved and cyperuceous weeds. These herbicides are activated after being converted to free acid forms by hydrolysis of the acylamide bond, which may be catalyzed by acylamidase (Kobayashi & Ichinose 1984, 1987; Oyamada et al 1986a,b). They are detoxified by chain and/or ring hydroxylation followed by glucose conjugation in rice (Miyake 1994).…”

Section: Metabolism Of Rice Herbicides In Plantsmentioning

confidence: 99%

Metabolism and selectivity of rice herbicides in plants

Usui

2001

Weed Biology and Management

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Chemical weed control with effective and highly active herbicides has been very useful and convenient means. It has contributed to stable crop production and is labor saving. Recent herbicides have had characteristics such as high effectiveness without causing environmental pollution or harmful effects, and appropriate herbicides having high activity, low toxicity, high selectivity and being non‐persistent have been developed. The metabolism of rice herbicides used mainly in Japan, such as sulfonylurea, chloroacetamide, acylamide, urea, thiocarbamate, pyrazole, triazine, diphenyl ether, phthalimide, phenoxy, aryloxyphenoxypropionate, etc., is reviewed, and its involvement in selectivity is also discussed. The metabolism of herbicides is closely related to their activity and selectivity. Differential herbicide metabolism in plants is a contributing factor of selectivity between crops and weeds. Chemicals that are more detoxified in crops and/or more activated or less detoxified in weeds are considered as being effective and selective herbicides. The metabolism of various types of rice herbicides includes: oxidative reaction (ring and chain hydroxylation, O‐ and N‐dealkylation), hydrolysis and subsequent glucose conjugation, and glutathione conjugation in rice. These detoxicative activities are much higher in rice than weeds in paddies, and this leads to the selectivity of herbicides. Enzymes, oxidase, P‐450 mono‐oxygenase, esterase, acylamidase, glucosyl transferase, glutathione transferase, etc., play important roles in herbicide metabolism and selectivity.

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Section: Metabolism Of Rice Herbicides In Plantsmentioning

confidence: 99%

Metabolism and selectivity of rice herbicides in plants

Usui

2001

Weed Biology and Management

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“…2-(2-Naphthoxy)propionic acid (NOP) and methyl 2-(2-naphthoxy)propionate (NOPM) are major degradation products. The herbicide is absorbed through the roots, but little is translocated to the upper part of rice plants (Oyamada and Kuwatsuka, 1982), Cyperus serotinus (Kobayashi and Ichinose, 1987), and tobacco (Nicotiana tabacum cv. Wisconsin 38; Wang et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

Characterization and Purification of Herbicide Naproanilide Receptor from Tobacco Mesophyll Callus

Wang

Hwang

Hsieh

1997

J. Agric. Food Chem.

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Herbicide naproanilide receptor proteins in tobacco mesophyll callus were isolated and characterized. The reaction between naproanilide and its receptor proteins is a specific binding with dissociation constant K d = 1.8 × 10-7 M. The optimum conditions for the binding reaction are 0−4 °C at pH 5.8−7.8 for 30−45 min. Purification of naproanilide receptor proteins on a chromatograph with Sepharose 6B gel filtration, DEAE-Sephacel ion exchange and NOP-ε-l-lysine-Sepharose 4B affinity columns in sequence revealed the molar mass 48 kDa. Purified naproanilide receptor exhibited no stimulation on RNA synthesis, and the results indicated that the receptor may be only a carrier for absorption and translocation of plant hormone but cannot enter nuclei for RNA synthesis and regulation of gene expression. Keywords: Naproanilide; receptor protein; binding activity; chromatography; purification method

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“…It has been suggested that the inhibition of tuberization of C. serotinus by naproanilide is actually caused by 2-(2-naphthoxy) propionic acid (M-1) and methyl 2-(2-naphthoxy) propionate (M-2), both of which are the metabolic products of naproanilide, possibly through their action on the RNA synthetic process related to the development of rhizomes into tuber5, 7).…”

Section: Introductionmentioning

confidence: 99%