RELATIONSHIP BETWEEN THE OXYGEN ISOTOPE RATIOS OF TERRESTRIAL PLANT CELLULOSE, CARBON-DIOXIDE, AND WATER
RELATIONSHIP BETWEEN THE OXYGEN ISOTOPE RATIOS OF TERRESTRIAL PLANT CELLULOSE, CARBON-DIOXIDE, AND WATER
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DOI：
10.1126/science.204.4388.51
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发表时间：
1979-01-01
期刊：
影响因子：
56.9
通讯作者：
EPSTEIN, S
中科院分区：
文献类型：
--
作者：
DENIRO, MJ;EPSTEIN, S
从两组小麦植株中提纯的纤维素的氧-18与氧-16（18 O/16 O）的比值，除了供给它们的二氧化碳的18 O/16 O比值有很大差别外，在所有方面都相似的条件下生长。纤维素的18 O/16 O比值的差异与植物中存在的水的18 O/16 O比值的差异相似。这些结果表明，在纤维素合成过程中，CO2产生的氧与植物体内水的氧进行了完全交换，植物体内水的18 O/16 O比值是影响陆生植物纤维素18 O/16 O比值的主要因素。
The ratios of oxygen-18 to oxygen-16 (18O/16O) of cellulose purified from two sets of wheat plants grown under conditions similar in all respects except for a large difference in the18O/16O ratios of the carbon dioxide supplied to them differ by only a small amount. The difference in the18O/16O ratios of the cellulose is similar to that observed for the18O/16O ratios of the water present in the plants. These results indicate that the oxygen derived from carbon dioxide undergoes complete exchange with the oxygen of the water in the plant during the synthesis of cellulose and that the18O/16O ratio of the water inside the plant is the primary influence on the18O/16O ratio of cellulose in terrestrial plants.