Variations of Natural 15N Abundances in Leguminous Plants and Nodule Fractions |
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| Authors: | Yoneyama Tadakatsu; Yamada Naoto; Kojima Hirofumi; Yazaki Jinya |
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| Institution: | 1Department of Applied Physiology, National Institute of Agrobiological Resources, Tsukuba Science City Yatabe, Ibaraki 305, Japan
2Department of Agricultural Chemistry, Nihon University Setagaya-ku, Tokyo 154, Japan |
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| Abstract: | Natural 15N abundances of various tissues from twelve speciesof leguminous plants and those of nodule fractions from threespecies grown in Japan were determined by mass spectrometry.The 15N concentrations of non-nodular tissues of nodulated plantswere close to the value of atmospheric N2. The nodules of soybean,mung bean, cowpea, kidney bean, adzuki bean, sword bean, whiteclover, Leucaena leucocephala, and horsegram showed highly elevated15N concentrations, and those of pea had a slightly enriched15N concentration compared to other tissue, while the nodulesof peanut and lucerne had 15N values similar to those of theirshoot tissues. The bacteroid fractions from horsegram, swordbean and peanut had higher 15N concentrations than the cytosolfractions. (Received March 17, 1984; Accepted August 21, 1984) |
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