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| Nitrogen addition results in Medicago sativa switching nitrogen sources | |
Wang, Yinliu1; Hasi, Muqier1; Bu, Dongdong1,2; Li, Ang; Xue, Jianguo; Wang, Changhui; Tian, Qiuying; Niu, Guoxiang1; Geng, Qianqian1; Wang, Lixin3; Huang, Jianhui1
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| 2021 | |
| 发表期刊 | PLANT ECOLOGY & DIVERSITY
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| ISSN | 1755-0874 |
| 卷号 | 14期号:3-4页码:183-194 |
| 摘要 | Background: Nitrogen (N) addition may have strong impacts on legume growth and their biological N fixation (BNF), but how legume N acquisition sources respond to N inputs have yet to be comprehensively assessed. Aims: We quantified the effects of N addition on the growth and BNF of Medicago sativa and to assess the response of legume N acquisition to N addition. Methods: We grew M. sativa in the greenhouse under gradients of added NH4NO3 and analysed the variables that were relative to growth and BNF, such as N concentration, biomass, delta N-15 values, nodule number, percentage of N derived from the atmosphere (Ndfa%). Results: Nitrogen addition had marginal effects on plant biomass production and foliar N concentration. Foliar delta N-15 value increased with increasing added N, while Ndfa% decreased. The number of nodules formed also decreased with N addition while the nitrogenase (nifH) genecopies per unit nodule mass was not significantly different with N addition. Conclusions: These findings indicate that increasing mineral N availability decreases symbiotic investment into BNF, mainly by reducing nodule formation; this was found to have no significant impact on plant growth because the plant changes its N source from BNF-N to mineral N derived from the soil. |
| 关键词 | Biological N fixation biomass N concentration delta N-15 nodulation stable isotope |
| 学科领域 | Plant Sciences |
| DOI | 10.1080/17550874.2021.2007309 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS关键词 | N-2 FIXATION ; NATURAL-ABUNDANCE ; PHOSPHORUS LIMITATION ; PASTURE LEGUMES ; FIXING BACTERIA ; KEY ROLE ; SOIL ; N-15 ; DEPOSITION ; GROWTH |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| WOS记录号 | WOS:000736377200001 |
| 出版者 | TAYLOR & FRANCIS LTD |
| 文献子类 | Article |
| 出版地 | ABINGDON |
| EISSN | 1755-1668 |
| 资助机构 | National Natural Science Foundation of China [31870440, 31670483] |
| 作者邮箱 | jhhuang@ibcas.ac.cn |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/26376 |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 3.Beijing Micro & Macro Sci & Technol Co Ltd, Beijing, Peoples R China 4.Indiana Univ Purdue Univ, Dept Earth Sci, Indianapolis, IN USA |
| 推荐引用方式 GB/T 7714 | Wang, Yinliu,Hasi, Muqier,Bu, Dongdong,et al. Nitrogen addition results in Medicago sativa switching nitrogen sources[J]. PLANT ECOLOGY & DIVERSITY,2021,14(3-4):183-194. |
| APA | Wang, Yinliu.,Hasi, Muqier.,Bu, Dongdong.,Li, Ang.,Xue, Jianguo.,...&Huang, Jianhui.(2021).Nitrogen addition results in Medicago sativa switching nitrogen sources.PLANT ECOLOGY & DIVERSITY,14(3-4),183-194. |
| MLA | Wang, Yinliu,et al."Nitrogen addition results in Medicago sativa switching nitrogen sources".PLANT ECOLOGY & DIVERSITY 14.3-4(2021):183-194. |
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