Oxidative activity of cytoplasmic particles of apples: Krebs cycle oxidations, oxidative phosphorylation, &amp; cytochromes

Lieberman, Morris

doi:10.1104/pp.36.6.804

Cited by 8 publications

(3 citation statements)

References 11 publications

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“…O XIDATIVE phosphorylation, a vital process in the en ergy economy of many living cells, has been demon strated in a number of particulate preparations from plants (7,8,10,16,23). However, reports of the effects of herbicides on this process in plant preparations are very few in number (1,6,17,18,21,22,24).…”

Section: Introductionmentioning

confidence: 99%

“…Some water-soluble herbicides react with various soil constituents to form compounds that are relatively insoluble; these molecules may resist leaching and become immobile in the soil (15). Herbicides may be moved in any direction in the soil depending on the flow of water (5,6,10). The movement of herbicides by water is greatest in sandy soils, less in clay soils, and least in muck soils (8,11,12).…”

Section: Introductionmentioning

confidence: 99%

“…Some herbicides may be leached 4 to 5 ft into the soil, while others are hardly moved at all (6,10). The longterm persistence of a herbicide in the soil may be bene ficial, e.g.…”

Section: Introductionmentioning

confidence: 99%

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Effects of 2,4-D and Other Herbicides on Oxidative Phosphorylation in Mitochondria from Cabbage

1968

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The effects of 22 herbicides on oxidative phosphorylation in mitochondria from cabbage (Brassica oleracea var. capitata L.) have been studied. Carbamates, phenoxyacids, 3,5-dimethyltetrahydro-l,3,5,2H-thiadiazine-2-thione (DMTT), N-1-napthylphthalamic acid (NPA), 2,3,6-trichlorobenzoic acid (2,3,6-TBA), 3-(p-chlorophenyl)-1,1-dimethylurea (monuron), and 2-chloro-2-N,N-diallylacetamide (CDAA) inhibited phosphorylation to a greater extent than oxygen uptake in cabbage mitochondria. The compounds 1,2-dihydropyridazine-3,6-dione (MH), 2,2-dichloropropionic acid (dalapon), 2,2,3-trichloropropionic acid (hereinafter referred to as 2,2,3-TPA), sodium chlorate, and 3-amino-l,2,4-triazole (amitrole) at concentrations as high as 1 × 10–2 M did not have a large effect on oxidative phosphorylation in cabbage mitochondria. Respiration which was stimulated by 2,4-dinitrophenol (DNP) or adenosine diphosphate (ADP) was inhibited by 2,4-dichlorophenoxyacetic acid (2,4-D). Although 2,4-D did not affect Mg++-stimulated adenosine triphosphatase (ATPase), it inhibited an oleate-stimulated ATPase activity and the ATP-32Pi exchange reaction in cabbage mitochondria. The results suggest that 2,4-D may inhibit respiration in cabbage mitochondria by an effect on a reaction involved in coupling phosphorylation with electron transport.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of 2,4-D and Other Herbicides on Oxidative Phosphorylation in Mitochondria from Cabbage

1968

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Ripening of Apples during Storage I.—Introduction

Knee

1971

J Sci Food Agric

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Effects of controlled atmosphere storage on respiratory metabolism of apple fruit tissue

Knee

1973

J Sci Food Agric

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The effects of CO, and 0, concentrations commonly used in fruit storage upon various respiratory processes in apple fruit tissue have been investigated. In manometric experiments 10 % CO, inhibited CO, release from succinate supplied to peel discs by over 50 %; CO, release from malate was inhibited at high substrate concentrations, while CO, release from pyruvate was not affected. High CO, concentrations also inhibited 14C02 release from succinate 1 ,4-14C and succinate 2,3-I4C supplied to peel discs. It is concluded that succinate dehydrogenase is the respiratory enzyme most affected by C02 concentration.Oxygen uptake was found to be 50% inhibited at ambient concentrations of 0.5 % O2 for cortical tissue and 5 % 0, for peel tissue. It is concluded that cytochrome oxidase is responsible for O2 uptake in peel and cortical tissue. The apparent low affinity for 0, in peel respiration may be due to limited O2 diffusion through the tissue. It is concluded that 0, uptake by the bulk of the apple is not directly affected by 0, concentrations employed in fruit storage.

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Oxidative activity of cytoplasmic particles of apples: Krebs cycle oxidations, oxidative phosphorylation, & cytochromes

Cited by 8 publications

References 11 publications

Effects of 2,4-D and Other Herbicides on Oxidative Phosphorylation in Mitochondria from Cabbage

Effects of 2,4-D and Other Herbicides on Oxidative Phosphorylation in Mitochondria from Cabbage

Ripening of Apples during Storage I.—Introduction

Effects of controlled atmosphere storage on respiratory metabolism of apple fruit tissue

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