种子萌发过程中的呼吸转变。
Respiratory Transition during Seed Germination.
机构信息
Department of Horticulture, Purdue University, West Lafayette, Indiana 47907.
出版信息
Plant Physiol. 1976 Feb;57(2):274-6. doi: 10.1104/pp.57.2.274.
Abstract
Experiments with germinating seeds of Wayne soybean (Glycine max Merr.) show that between the 4th and the 8th hour of germination, respiration experiences a transition from predominantly "alternate" respiration, which is sensitive to salicylhydroxamic acid, to a cyanide-sensitive respiration. The dependence of early germination stages on alternate respiration is reflected in several types of seed functions, including subsequent root growth rate, chlorophyll synthesis, and germination itself. The early period of germination is shown to require a normal O(2) tension, which is no longer a requirement at later stages. The changing sensitivity to cyanide and to salicylhydroxamic acid is found to be common to seven different types of germinating seeds. It is proposed that the alternate pathway of respiration provides something essential for the completion of the earliest stages of seed germination.
摘要
发芽种子的实验表明，在第 4 到第 8 小时的发芽过程中，呼吸经历了从主要的“交替”呼吸到氰化物敏感呼吸的转变，“交替”呼吸对水杨羟肟酸敏感。早期发芽阶段对交替呼吸的依赖反映在几种种子功能上，包括随后的根生长速度、叶绿素合成和发芽本身。早期发芽阶段需要正常的 O(2)张力，而在后期阶段则不再需要。发现对氰化物和水杨羟肟酸的敏感性变化在七种不同类型的发芽种子中是常见的。有人提出，呼吸的交替途径为种子发芽的最早阶段的完成提供了必要的物质。
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本文引用的文献
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Studies of electron transport in dry and imbibed peanut embryos.干燥和吸胀花生胚中电子传递的研究。
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Metabolism of barley seed during early hours of germination.大麦种子在发芽初期的代谢。
Plant Physiol. 1969 May;44(5):733-8. doi: 10.1104/pp.44.5.733.
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Germination of Phaseolus vulgaris II. Stimulation of Axis Growth by dl-Fluorophenylalanines.菜豆的萌发II. dl-氟苯丙氨酸对胚轴生长的刺激作用
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The Respiration of the Pea Plant. Oxidation of Hexose Phosphate and Pentose Phosphate by Cell-free Extracts of Pea Leaves.豌豆植株的呼吸作用。豌豆叶片无细胞提取物对磷酸己糖和磷酸戊糖的氧化作用。
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