Control of Changes in Mitochondrial Activities during Aging of Potato Slices
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چکیده
منابع مشابه
Control of Changes in Mitochondrial Activities during Aging of Potato Slices.
Aging of slices of potato tuber (Solanum tuberosum L.) in an aerated liquid medium induces a number of changes in mitochondrial activities. A nonphosphorylative, cyanide-insensitive electron transport pathway (alternate pathway) is brought into operation. The rate of oxidation of exogenous NADH increases markedly and the efficiency of phosphorylation with this substrate remains the same as it i...
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The me-chanism by which the reversible conversion of starch ito sucrose takes place in potato tubers exposed t,o cold is as yet essentilally unknown. Early 'studies on the subjectt tried to correllate this conversion with va,riations in the activity of related enzymes (10). Those responsible for the synthesis of sucrose and sticrose-6--phosphiate (1) are undoubtedly highly relevant. In add'itio...
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Activation of protein synthesis in aging potato tuber slices.
LiCI-extraction of RNAs from isolated ribosomes, however, destroys the coding properties of mRNAs (as has been shown with cerebral mRNA; P. MANDEL, pers. comm.). Therefore separation of mRNAs from ribosomes was achieved by EDTA. If isolated ribosomes from intact potato tubers are dissociated into subunits and RNAs by EDTA, sucrose density gradient profiles show the presence of the 60Sand 40S-su...
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Kinetics of polysome formation, translational capacity, and coding properties of polysome-associated messenger RNA were investigated in potato tuber tissue discs during aging. Polysome content rapidly increased immediately after slicing from 14% of total ribosomes in freshly sliced discs to 55% within 12 hours of aging. The amount of polysomal RNA also increased 5-fold during this period. Trans...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1976
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.58.2.147