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TY - JOUR AU - Maniruzzaman, Muhammad AU - Asaeda, Takashi PY - 2012/04/15 Y2 - 2025/09/23 TI - Fractionation of Stable Isotopes of Nitrogen in Trapa japonica During Uptake of NH4+-N JF - Research in Plant Biology JA - RIPB VL - 2 IS - 2 SE - Short Communications DO - UR - https://www.updatepublishing.com/journal/index.php/ripb/article/view/2559 SP - AB - <em>Trapa japonica</em> grown hydroponically under various conditions with respect to different concentrations of NH4+-N to observe the fractionation of stable isotope of nitrogen occurred during uptake and assimilation. There was a significant variation in fractionation of nitrogen isotope during uptake from different levels of nitrogen by the plant. When plant absorbed a large amount of N from the solution, the lower enrichmentof δ15N value was observed in plant parts and the enrichment of δ15N value was decreased with the increase of nitrogen concentration in the medium. A linear relationship occurred during up take of nitrogen by <em>T. japonica</em> between fraction of nitrogen remaining inmedium (f) and fractionation factor (ε). ER -