吸胀但休眠的生菜种子中的多核糖体形成与蛋白质合成
Polyribosome formation and protein synthesis in imbibed but dormant lettuce seeds.
作者信息
Fountain D W, Bewley J D
机构信息
Department of Biology, The University of Calgary, Calgary, Alberta, Canada T2N 1N4.
出版信息
Plant Physiol. 1973 Dec;52(6):604-7. doi: 10.1104/pp.52.6.604.
Abstract
Dormancy is maintained in Grand Rapids lettuce (Lactuca sativa) seeds imbibed on water in darkness at 25 C. Polyribosome formation and protein synthesis occur early in the imbibition phase and considerable polysomal material is also present after 24 and 48 hours, even though the seeds have failed to germinate. Incorporation of labeled leucine into protein following a 24-hour preincubation period shows that these polysomes are active in protein synthesis.
摘要
在25℃黑暗条件下，浸于水中的大急流城生菜（Lactuca sativa）种子保持休眠状态。多核糖体形成和蛋白质合成在吸水阶段早期发生，并且即使种子未能发芽，在24小时和48小时后也存在相当数量的多聚核糖体物质。经过24小时预温育期后，将标记的亮氨酸掺入蛋白质表明这些多核糖体在蛋白质合成中具有活性。
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