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首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >Hydrogen Isotope Partitioning During Plant Growth
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Hydrogen Isotope Partitioning During Plant Growth

机译：植物生长过程中氢同位素的分配

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摘要

The intrinsic rate of natural growth as well as the growth increment of the hydrogen isotopes ↑(1)H and ↑(3)H m non-exchangeable organically bound states of maize and barley (representatives of C4- and C3-plants) are determined. In contrast to the kinetic isotope effect, the heavy isotope is preferred instead of retarded not only in the growth rate but also in the growth increment. Local accumulation of the heavy hydrogen isotope in exchangeable hydrogen positions during growth and subsequent relocation in non-exchangeable positions can be concluded. Structural hydrogen bonds, which are abundant in carbohydrates, proteins. DNA, etc., have to be taken into account. The usually employed isotope analysis of isolated plants or plant organs cannot reveal these facts. # 1997 Elsevier Science Ltd
机译：确定了玉米和大麦不可交换有机结合状态的固有自然增长率以及氢同位素↑（1）H和↑（3）H m的内在增长率以及C4和C3植物的代表。与动力学同位素效应相反，重同位素是优选的，而不是不仅抑制生长速率而且抑制生长增量。可以得出结论，在生长过程中重氢同位素在可交换氢位置的局部积累以及随后在不可交换位置的迁移。结构氢键，富含碳水化合物，蛋白质。必须考虑DNA等。通常对分离的植物或植物器官进行同位素分析无法揭示这些事实。 ＃1997爱思唯尔科学有限公司

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