Mode of action of bentazon: Effect on photosynthesis

Mine, Akihiko; Matsunaka, Shooichi

doi:10.1016/0048-3575(75)90017-6

Cited by 43 publications

(33 citation statements)

References 11 publications

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“…Rao and Fleming (19'75,1978) observed a differential response of maize cytoplasms to butylate injury. Barel and Peterson (1975) (Pfister et al 7974;Mine and Matsunaka 1975 For personal use only. …”

mentioning

confidence: 99%

Differential Response of Maize Inbreds to Bentazon and Other Herbicides

Fleming¹,

Banks²,

Legg³

1988

Can. J. Plant Sci.

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mentioning

confidence: 99%

Differential Response of Maize Inbreds to Bentazon and Other Herbicides

Fleming¹,

Banks²,

Legg³

1988

Can. J. Plant Sci.

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“…Light is required for the expression of the toxic effect of bentazon and acifluorfen (9,10,13). However, this light requirement was not involved in the timing of the sensitivity.…”

Section: Discussionmentioning

confidence: 99%

Rhythmical Changes in the Sensitivity of Cotton Seedlings to Herbicides

Rikin¹,

John²,

Wergin³

et al. 1984

Plant Physiol.

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Cotton (Gossypiam hiruutam L) seedlings that were grown under a photoperiod of 12 hours darkness and 12 hours light showed oscillations in their sensitivity to the herbicides sodium 5(2-chloro4-trifluoromethyl)-phenoxy)-2-nitrobenzoate (acifluorfen), butyl 2-(4-((5-(trifluoromethyl)-2-pyridinyl)oxy)phenoxy)propanoate (fluazifop) and 3-isopropyl-lH-2,1,3-benzothiadiin-4(3H)-oe 2,2-dioxide (bentazon). Sensi The herbicides sodium 5-(2-chloro4-trifluoromethyl)-phenoxy)-2-nitrobenzoate (acifluorfen), butyl 2-(4-((5-(trifluoromethyl)-2-pyridinyl) oxy)phenoxy)propanoate (fluazifop) and 3-isopropyl-1H-2,1,3-benzothiad in4(3H)-one 2,2-dioxide (bentazon) were applied by spraying the seedlings until run-off. The injury caused by the herbicides was evaluated by degree of damage to the cotyledons as expressed by appearance of necrotic areas after several days. It was scored from 1 which represents no visible necrotic areas on the cotyledons to 5 which represents completely necrotic cotyledons. At the time of herbicide application, the seedlings had only two cotyledons and had not yet developed shoots. Resumption of growth was determined by measuring the shoot weight several days after the herbicide application.Humans and other animals show oscillations in their sensitivity to many chemical agents such as pyrethrum, atropin, pentobarbitol sodium, ethanol and histamine (12). There are also reports on oscillations in the sensitivity of plants to chemical agents. For example, changes in membrane potential in Samanea pulvini by sucrose (1 1) and inhibition of flowering in Lemna by ions (5) were related to the time ofday that sucrose or ions were applied. Of special importance are the relations between the response of plants to herbicides and the time of day when the herbicides are applied. Many studies demonstrated such relations between herbicides with various mechanisms ofaction and many plant species (1-4, 7, 8, 14). However, it is not yet clear what contributes to the daily oscillation in the sensitivity to herbicides.The aim of the present work was to test whether such daily oscillations in the sensitivity to herbicides were rhythmical changes which must be entrained by a certain photoperiod and were regulated by an endogenous clock.

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“…The chloroplast is the primary site of action of bentazone, and it has been suggested (e.g. Mine and Matsunaka, 1975;Boger, Beese and Miller, 1977) that non-cyclic electron transport is specifically inhibited. Thus, at high light intensities, a block in the electron transport chain would result in a build up of excitation energy unable to be harnessed or efficiently dissipated, and cellular destruction may rapidly ensue as a result of lipid peroxidation (Halliwell, 1978).…”

Section: Discussionmentioning

confidence: 99%