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本文引用的文献

1

Isotopic Composition of Cellulose from C3, C4, and CAM Plants Growing Near One Another.

Science. 1983 May 27;220(4600):947-9. doi: 10.1126/science.220.4600.947.

2

Isotopic Variations in Meteoric Waters.

Science. 1961 May 26;133(3465):1702-3. doi: 10.1126/science.133.3465.1702.

3

Compensation point and isotopic characteristics of c(3)/c(4) intermediates and hybrids in panicum.

Plant Physiol. 1986 Jan;80(1):242-5. doi: 10.1104/pp.80.1.242.

4

Hydrogen, oxygen, and carbon isotope ratios of cellulose from submerged aquatic crassulacean Acid metabolism and non-crassulacean Acid metabolism plants.

Plant Physiol. 1984 Sep;76(1):68-70. doi: 10.1104/pp.76.1.68.

5

Isotope ratios of cellulose from plants having different photosynthetic pathways.

Plant Physiol. 1984 Mar;74(3):557-61. doi: 10.1104/pp.74.3.557.

6

Carbon, hydrogen, and oxygen isotope ratios of cellulose from plants having intermediary photosynthetic modes.

Plant Physiol. 1984 Jan;74(1):104-7. doi: 10.1104/pp.74.1.104.

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CAM 植物和 C3 植物光合作用组织水的氧和氢同位素比值。

Oxygen and Hydrogen Isotope Ratios of Water from Photosynthetic Tissues of CAM and C(3) Plants.

机构信息

Department of Earth and Space Sciences, University of California, Los Angeles, California 90024.

出版信息

Plant Physiol. 1986 Oct;82(2):428-31. doi: 10.1104/pp.82.2.428.

DOI:10.1104/pp.82.2.428

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC1056135/

Abstract

Water samples from photosynthetic tissues of C(3) and Crassulacean acid metabolism (CAM) plants that grew together in the field were extracted and the stable oxygen and hydrogen isotope ratios determined. During the day, (18)O/(16)O and deuterium/hydrogen (D/H) ratios of water from CAM plants were lower than those observed in water from C(3) plants. The patterns of diurnal variation (or lack thereof) in isotope ratios of plant water are consistent with the gross anatomical and physiological characteristics of the plants studied here. Our observations support the previously advanced hypothesis that high D/H ratios in cellulose nitrate prepared from CAM plants relative to those for C(3) plants are not caused by greater deuterium enrichment in the water in CAM plants, but rather by isotopic fractionations associated with different biochemical reactions in the two types of plants.

摘要

从在野外共同生长的 C(3)和景天酸代谢 (CAM) 植物的光合组织中提取水样，并测定其稳定的氧和氢同位素比值。在白天，CAM 植物的水中的 (18)O/(16)O 和氘/氢 (D/H) 比值低于从 C(3)植物中观察到的比值。植物水同位素的昼夜变化（或缺乏）模式与这里研究的植物的总解剖和生理特征一致。我们的观察结果支持先前提出的假设，即与 C(3)植物相比，从 CAM 植物制备的硝酸纤维素中高的 D/H 比值不是由于 CAM 植物中水的氘富集更大，而是由于与两种类型植物中的不同生化反应相关的同位素分馏。