Inhibition of pigment synthesis by 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5-hydroxypyrazole, norflurazon, and new herbicidal compounds in radish and flatsedge plants

Soeda, Takashi; Uchida, Toshiro

doi:10.1016/0048-3575(87)90082-4

Cited by 24 publications

(15 citation statements)

References 17 publications

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“…Plastoquinone is a critical cofactor for phytoene desaturase, a component of the carotenoid biosynthetic pathway,7–9 and accumulation of phytoene has been observed in plants treated with benzoylcyclohexanediones 10. 11 Thus, depletion of plastoquinone levels by inhibition of HPPD results in depletion of carotenoids, leading to bleaching symptoms similar to those caused by phytoene desaturase inhibitors such as flurochloridone and norflurazon 12. 13…”

Section: Discovery and Optimisation Of The Benzoylcyclohexane‐13‐dmentioning

confidence: 99%

Mesotrione: a new selective herbicide for use in maize

Mitchell¹,

Bartlett²,

Fraser³

et al. 2001

Pest. Manag. Sci.

452

414

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Mesotrione is a new herbicide being developed for the selective pre- and post-emergence control of a wide range of broad-leaved and grass weeds in maize (Zea mays). It is a member of the benzoylcyclohexane-1,3-dione family of herbicides, which are chemically derived from a natural phytotoxin obtained from the Californian bottlebrush plant, Callistemon citrinus. The compound acts by competitive inhibition of the enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD), a component of the biochemical pathway that converts tyrosine to plastoquinone and alpha-tocopherol. Mesotrione is an extremely potent inhibitor of HPPD from Arabidopsis thaliana, with a Ki value of c 6-18 pM. It is rapidly taken up by weed species following foliar application, and is distributed within the plants by both acropetal and basipetal movement. Maize is tolerant to mesotrione as a consequence of selective metabolism by the crop plant. Slower uptake of mesotrione, relative to susceptible weed species, may also contribute to its utility as a selective herbicide for use in maize.

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Section: Discovery and Optimisation Of The Benzoylcyclohexane‐13‐dmentioning

confidence: 99%

Mesotrione: a new selective herbicide for use in maize

Mitchell¹,

Bartlett²,

Fraser³

et al. 2001

Pest. Manag. Sci.

452

414

View full text Add to dashboard Cite

show abstract

“…The mechanism of chlorosis induced by DTP has been studied (Kawakubo et al, 1979;Sandmann et al, ·1984a, b;Soeda and Uchida, 1987), but the details remained obscure. Recently it was postulated that DTP may inhibit HPPD as a primary site {Schmidt, 1997).…”

Section: Discussionmentioning

confidence: 99%

“…The phytotoxic symptom produced by DTP is chlorosis of the plant leaves. DTP might interfere directly or indirectly with the syntheses· of chlorophyll and carotenoid in the plastidic photosynthetic apparatus (Kawakubo et al, 1979;Sandmann et al, 1984a and b;Soeda and Uchida, 1987).…”

Section: Serotinusmentioning

confidence: 99%

Plastid Damage in Photosynthetic Cells of Mizugayatsuri (Cyperus serotinus) Leaves Treated with a Pyrazole Herbicide

Ogawa¹,

Miyake

Maeda

2001

Plant Production Science

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“…It is applied on corn crop at 400 g.ha −1 to control development of broad leaf weeds [2]. In target plant species, sulcotrione is absorbed by leaves and roots [3,4] and inhibits the enzyme 4-hydroxyphenyl pyruvate dioxygenase (p-HPPD) [5,6], leading to a massive accumulation of phytoene and a decrease in chlorophyll and carotenoid levels [7,8], which induce necrosis and death of sensitive plants.…”

Section: Introductionmentioning

confidence: 99%