Biology Department, Washington University, St. Louis, Missouri 63130.
Plant Physiol. 1983 May;72(1):256-8. doi: 10.1104/pp.72.1.256.
Soybean (Glycine max L. Merrill) nodules are usually more enriched in (15)N than other tissues. We show that both bacteroids and nodule cortex are considerably more enriched in (15)N than nodule cytosol, with bacteroids being slightly more enriched than the cortex. Hence, (15)N enrichment occurs in cells of both plant and bacterial origin.
大豆（Glycine max L. Merrill）根瘤通常比其他组织富含（15）N。我们表明，类菌体和根瘤皮层比根瘤细胞质富含（15）N 的程度都大得多，类菌体比皮层略为更富集（15）N。因此，（15）N 富集发生在植物和细菌来源的细胞中。
