The mechanism of bentazon selectivity

Mine, Akihiko; Miyakado, Masakazu; Matsunaka, Shooichi

doi:10.1016/0048-3575(75)90032-2

Cited by 45 publications

(52 citation statements)

References 9 publications

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“…Accordingly, it is proposed that the mobility of bentazon from a treated leaf into developing leaves is one of the deter- minants of bentazon tolerance among the rice lines. Similar findings have been reported by Connelly et al (1988), Mine et al (1975) and Roggenbuck et al (1994).…”

Section: Translocation and Distributionsupporting

confidence: 92%

“…This metabolite was detected from the extract of M202 without glucosidase treatment, indicating a more rapid hydroxylation of bentazon before further conjugation. Formation of 6‐hydroxy‐bentazon has been reported in lucerne, carrot, sweetcorn, potato, tobacco and wheat (Mine et al . 1975; Stering & Balke 1989).…”

Section: Resultsmentioning

confidence: 99%

“…Similar findings have been reported by Connelly et al . (1988), Mine et al . (1975) and Roggenbuck et al .…”

Section: Resultsmentioning

confidence: 99%

“…Mine et al . (1975) reported that the mechanism of bentazon selectivity between rice (tolerant) and Cyperus serotinus (susceptible) was due to metabolic detoxification of this herbicide.…”

Section: Resultsmentioning

confidence: 99%

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Physiological basis of bentazon tolerance in rice (Oryza sativa L.) lines

Han

Wang²

2002

Weed Biology and Management

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In the present study, 98.8 mm of bentazon was applied to 3‐leaf stage rice seedlings. Two tolerant lines, M202 and cv. TNG67, showed slightly visible injury, photosystem II inhibition, as well as a low level of lipid peroxidation 7 days after application compared with the susceptible lines. Further physiological study of the mechanism of differential tolerance among Japonica and Indica types indicated that, although the tolerant Japonica lines M202 and cv. TNG67 absorbed more 14C‐bentazon, most of the 14C remained in the treated leaf or translocated to older leaves. However, two susceptible lines, FSK (Japonica) and IR36 (Indica), absorbed less 14C‐bentazon throughout the experiment, and most of the 14C was translocated from the treated leaves to younger leaves, which might result in the death of developing tissues. In addition, more bentazon residue and less polar metabolites were detected in these two susceptible lines. It is proposed that the higher tolerance of lines M202 and TNG67 to bentazon could be mainly due to a higher rate of metabolism of this herbicide, and partially due to less translocation to developing tissues.

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Section: Translocation and Distributionsupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

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Physiological basis of bentazon tolerance in rice (Oryza sativa L.) lines

Han

Wang²

2002

Weed Biology and Management

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“…Whereas Retzlaff et al [226] have reported that tolerant plants always take up less herbicide, Mine et al [227] found no differences in herbicide uptake and translocation. The chloroplasts are equally sensitive when isolated from tolerant or from resistant plants.…”

Section: Unclassified and Quinoid Photosynthesis-inhibiting Herbimentioning

confidence: 99%

Biochemistry and Physiology of Herbicide Action

Fedtke¹

1982

239

130

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Metabolism of Herbicides

Hoagland¹,

Zablotowicz²

2002

Encyclopedia of Agrochemicals

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Herbicide metabolism in plants and microorganisms is a major factor in the dissipation of these compounds in the environment. Metabolic degradation of herbicides by plant enzymes is the main mechanism of plant resistance to such phytotoxic chemicals. Alternatively, some plant enzymes can metabolize certain nonphytotoxic chemicals (termed proherbicides) to yield active herbicides within the plant. Generally, metabolism of pesticides can be categorized into three separate phases: phase I (enzymatic conversion of a herbicide to a less active compound), phase II (enzymatic conjugation of the parent compound or metabolites generated from phase I), and phase III (conversion of phase II metabolites into secondary conjugates of bound residues). These categories are discussed generally and specifically using typical herbicides as examples. The metabolic divergences and similarities of plant and microbial metabolism are discussed in general, and selected compounds from various herbicide families are used to illustrate metabolic routes of herbicides in plants and microorganisms.

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The mechanism of bentazon selectivity

Cited by 45 publications

References 9 publications

Physiological basis of bentazon tolerance in rice (Oryza sativa L.) lines

Physiological basis of bentazon tolerance in rice (Oryza sativa L.) lines

Biochemistry and Physiology of Herbicide Action

Metabolism of Herbicides

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