Absorption and translocation of nitrogen in rhizomes of Leymus chinensis
文献类型：SCI/SSCI论文
| 作者 | Liu H. S. ; Liu H. J. ; Song Y. H. |
| 发表日期 | 2011 |
| 关键词 | clonal growth resource availability stoloniferous herb hedysarum-laeve carex-bigelowii n-15 china plant integration plasticity |
| 英文摘要 | Leymus chinensis is a dominant species in the Inner Mongolia steppe, northern China. Plant growth in northern China grassland is often limited by low soil nitrogen availability. The objective of this study is to investigate whether rhizomes of Leymus chinensis are involved in the contribution of N uptake. The N concentration, (15)N concentration and (15)N proportion in roots, rhizomes and shoots after 48 h exposure of roots (L(root)) and rhizomes (L(rhizo)) separately and roots and rhizomes together (L(r+r)) to 0.1 mM (15)NH(4)(15)NO(3) solution were measured using root-splitting equipment and stable isotope ((15)N) techniques, respectively. The N content and dry mass were not affected by the labeling treatment. In contrast, the (15)N concentration in shoots, rhizomes and roots was significantly increased by the labeling in rhizomes, indicating that the inorganic nitrogen was absorbed via rhizomes from the solution and can be transported to other tissues, with preference to shoots rather than roots. Meanwhile, the absolute N absorption and translocation among compartments were also calculated. The N absorption via rhizomes was much smaller than via roots; however, the uptake efficiency per surface unit via rhizomes was greater than via roots. The capacity and high efficiency to absorb N nutrient via rhizomes enable plants to use transient nutrient supplies in the top soil surface. Copyright (C) 2011 John Wiley & Sons, Ltd. |
| 出处 | Rapid Communications in Mass Spectrometry |
| 卷 | 25 |
| 期 | 5 |
| 页 | 665-671 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0951-4198 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/23482]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Liu H. S.,Liu H. J.,Song Y. H.. Absorption and translocation of nitrogen in rhizomes of Leymus chinensis. 2011. |
入库方式： OAI收割
来源：地理科学与资源研究所
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