Conditions Affecting Enzyme Synthesis in Cotyledons of Germinating Seeds
نویسندگان
چکیده
منابع مشابه
Correlation between Oxygen Availability, Energy Charge, and Protein Synthesis in Squash Cotyledons Isolated from Germinating Seeds.
The influence of O(2) availability on the rate of protein synthesis, the levels of RNA and of adenylates, and the value of the energy charge in squash (Cucurbita maxima) cotyledons isolated from seeds germinated for 15 or 28 hours at different O(2) concentration (3% or 20% O(2)) has been investigated.The rate of protein synthesis is five times lower in cotyledons maintained in 3% O(2) than in t...
متن کاملActivity of enzymes of arginine metabolism in the cotyledons of developing and germinating pea seeds.
Ornithine carbamoyltransferase, argininosuccinate synthetase, argininosuccinate lyase, and arginase activity were measured in extracts from cotyledons of developing and germinating seeds of Pisum sativum L. The course of activity of these four urea cycle enzymes showed a similar pattern during seed development. The activity per cotyledon increased sharply initially and reached a maximum about 5...
متن کاملArginine catabolism in the cotyledons of developing and germinating pea seeds.
Arginine is the predominant free amino acid in the cotyledons of developing seeds of Pisum sativum L. cv Marzia. Breakdown of arginine was measured by injecting l-[guanido-(14)C]arginine into detached cotyledons. Cotyledons of developing seeds showed a low rate of (14)CO(2) evolution whereas a much higher rate of (14)CO(2) evolution was measured from cotyledons of seeds 4 days after the onset o...
متن کاملBiogenesis of mitochondria in germinating peanut cotyledons.
The increase in respiratory activity in germinating peanut cotyledons has been correlated with an actual increase in mitochondria. Using sucrose gradient centrifugation, it was shown that succinoxidase activity is associated with a well-defined band of cell particulates of uniform density, size and ultrastructure. During germination the population of succinoxidase-containing particles increases...
متن کاملCarbamoyl phosphate synthetase activity from the cotyledons of developing and germinating pea seeds.
Carbamoyl phosphate synthetase activity was measured in partially purified extracts from cotyledons of developing and germinating seeds of Pisum sativum L. Some properties of the enzyme were established. During cotyledon development, the activity initially increased sharply but decreased during further development. The activity from germinating seeds was only one-tenth of the maximum activity a...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1960
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.35.3.288