1964
DOI: 10.1083/jcb.23.1.193
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Fine Structure of Negatively Stained Plant Mitochondria

Abstract: Recently investigators have reported knob-like particles on mitochondrial membranes isolated from different organisms (1,2,4,5). This report presents observations on the structure of plant mitochondria, negatively stained with phosphotungstic acid, which show knob-like projections on the membranes. MATERIALS AND METHODSCastor beans (Ricinus communis) were soaked for 24 hours in distilled water and sown in moist vermiculite. The seeds were allowed to germinate for 41/~ days in the dark at 29°C. At the end of th… Show more

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Cited by 17 publications
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“…Electron transfer in plant mitochondria resembles in many respects that in animal mitochondria: (a) room temperature spectra show the presence of a-, b-, and c-type cytochromes, flavoproteins, and pyridine nucleotide (16-19, 24, 25, 40, 41, 46, 56, 60, 69, 87, 114); (b) both types of mitochondria contain salt extractable c-type cytochromes (60); (c) the most likely ubiqui none in both higher plant and mammalian mitochondria is ubiquinone-IO (12,39); (d) the morphology of plant mitochondria in electron photomicro graphs is very similar to that of animal mitochondria (10,18,30,31,37,48,59,79,85,86); (e) an oxygen electrode trace indicates the presence of five respiratory states (29) as defined for animal mitochondria (22, 47, 50-53, 59,75,76,83,87,95, 111, 114, 118, 123); (I) the apparent Kms for succinate, inorganic phosphate, and ADP are similar to those of several animal mito chondria (51); (g) many respiratory inhibitors and uncouplers function in IKUMA 90). In addition, plant mitochondria have been shown to contain DNA and RNA as in the case of animal mitochondria (7).…”
Section: Introductionmentioning
confidence: 88%
“…Electron transfer in plant mitochondria resembles in many respects that in animal mitochondria: (a) room temperature spectra show the presence of a-, b-, and c-type cytochromes, flavoproteins, and pyridine nucleotide (16-19, 24, 25, 40, 41, 46, 56, 60, 69, 87, 114); (b) both types of mitochondria contain salt extractable c-type cytochromes (60); (c) the most likely ubiqui none in both higher plant and mammalian mitochondria is ubiquinone-IO (12,39); (d) the morphology of plant mitochondria in electron photomicro graphs is very similar to that of animal mitochondria (10,18,30,31,37,48,59,79,85,86); (e) an oxygen electrode trace indicates the presence of five respiratory states (29) as defined for animal mitochondria (22, 47, 50-53, 59,75,76,83,87,95, 111, 114, 118, 123); (I) the apparent Kms for succinate, inorganic phosphate, and ADP are similar to those of several animal mito chondria (51); (g) many respiratory inhibitors and uncouplers function in IKUMA 90). In addition, plant mitochondria have been shown to contain DNA and RNA as in the case of animal mitochondria (7).…”
Section: Introductionmentioning
confidence: 88%