| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.1111/pce.12772 |
| The carbon bonus of organic nitrogen enhances nitrogen use efficiency of plants. | |
| Franklin O; Cambui CA; Gruffman L; Palmroth S; Oren R; Näsholm T | |
| 发表日期 | 2017 |
| 出处 | Plant, Cell & Environment 40 (1): 25-35 |
| 出版年 | 2017 |
| 语种 | 英语 |
| 摘要 | The importance of organic nitrogen (N) for plant nutrition and productivity is increasingly being recognized. Here we show that it is not only the availability in the soil that matters, but also the effects on plant growth. The chemical form of N taken up, whether inorganic (such as nitrate) or organic (such as amino acids), may significantly influence plant shoot and root growth, and nitrogen use efficiency (NUE). We analysed these effects by synthesizing results from multiple laboratory experiments on small seedlings (Arabidopsis, poplar, pine and spruce) based on a tractable plant growth model. A key point is that the carbon cost of assimilating organic N into proteins is lower than that of inorganic N, mainly due to its carbon content. This carbon bonus makes it more beneficial for plants to take up organic than inorganic N, even when its availability to the roots is much lower -up to 70% lower for Arabidopsis seedlings. At equal growth rate, root: shoot ratio was up to three times higher and nitrogen productivity up to 20% higher for organic than inorganic N, which both are factors that may contribute to higher NUE in crop production. |
| 主题 | Ecosystems Services and Management (ESM) |
| 关键词 | allocation amino acids ammonium assimilation growth model nitrate nitrogen source plant theory |
| URL | http://pure.iiasa.ac.at/id/eprint/13270/ |
| 来源智库 | International Institute for Applied Systems Analysis (Austria) |
| 引用统计 | |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/131061 |
| 推荐引用方式 GB/T 7714 | Franklin O,Cambui CA,Gruffman L,et al. The carbon bonus of organic nitrogen enhances nitrogen use efficiency of plants.. 2017. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
| The%20carbon%20bonus（602KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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