Increasing nitrogen supply to phosphorus-deficient Medicago sativa decreases shoot growth and enhances root exudation of tartrate to discharge surplus carbon dependent on nitrogen form
文献类型：期刊论文
| 作者 | He, Honghua3,4,5,6; Zhang, Zekun3,4; Peng, Qi5,7; Chang, Chao3,4; Su, Rui3,4; Cheng, Xiao3,4; Li, Yingxin5,7; Pang, Jiayin1,8; Du, Sheng3,5; Lambers, Hans1,2,6 |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2021-09-24 |
| 页码 | 19 |
| 关键词 | Alfalfa Biomass allocation Carboxylate release Fertilisation Nutritional status Nitrogen to phosphorus ratio |
| ISSN号 | 0032-079X |
| DOI | 10.1007/s11104-021-05161-y |
| 通讯作者 | He, Honghua(honghuahe@ms.iswc.ac.cn) ; Pang, Jiayin(jiayin.pang@uwa.edu.au) |
| 英文摘要 | Aims Carboxylate release by roots has been considered a strategy for mobilisation and acquisition of phosphorus (P). However, recently, it was argued that carboxylate release may be a way to discharge surplus carbon produced under conditions that limit plant growth. Plant P status may not be the main factor driving carboxylate release by roots. Instead, plant nitrogen (N) status and/or N:P ratio of the soil or plant may play a more important role in enhancing carboxylate release. Methods A greenhouse pot experiment was performed to grow alfalfa in a P-deficient soil, supplied with two rates of P (0 and 20 mg kg(-1)) in combination with four forms of nitrogen (N) at five rates (0, 25, 50, 75, and 100 mg kg(-1)), to explore the effects of P rate, N form, N rate, and their interactions on plant growth, P and N status, and carboxylate release, and to determine the factors driving carboxylate release. Results Nitrogen addition weakened the positive effect of P addition on plant growth, and increased plant N and P concentrations; P addition increased plant P concentration, but weakened the effect of N addition on plant N concentration. The amount of tartrate increased dramatically with increasing N rate, which decreased shoot growth, depending on N form. At high P supply, tartrate exudation correlated negatively with shoot biomass. Conclusions Nitrogen addition to P-deficient alfalfa decreased shoot growth and enhanced the release of tartrate, likely to discharge surplus carbon; and the effects varied with N form. |
| WOS关键词 | CARBOXYLATE EXUDATION ; LUPINUS-ALBUS ; PLANT-GROWTH ; SOIL-NITROGEN ; WHITE LUPIN ; PHOSPHATE ; LIMITATION ; NUTRITION ; L. ; PHOTOSYNTHESIS |
| 资助项目 | National Key Research and Development Plan of China[2017YFC0504504] ; Natural Science Basic Research Program of Shaanxi Province[2019JM-411] |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000698893300001 |
| 出版者 | SPRINGER |
| 资助机构 | National Key Research and Development Plan of China ; Natural Science Basic Research Program of Shaanxi Province |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/165735]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | He, Honghua; Pang, Jiayin |
| 作者单位 | 1.Univ Western Australia, UWA Inst Agr, Perth, WA 6001, Australia 2.China Agr Univ, Dept Plant Nutr, Beijing 100193, Peoples R China 3.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 4.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China 5.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 6.Univ Western Australia, Sch Biol Sci, Perth, WA 6001, Australia 7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 8.Univ Western Australia, UWA Sch Agr & Environm, Perth, WA 6001, Australia |
| 推荐引用方式 GB/T 7714 | He, Honghua,Zhang, Zekun,Peng, Qi,et al. Increasing nitrogen supply to phosphorus-deficient Medicago sativa decreases shoot growth and enhances root exudation of tartrate to discharge surplus carbon dependent on nitrogen form[J]. PLANT AND SOIL,2021:19. |
| APA | He, Honghua.,Zhang, Zekun.,Peng, Qi.,Chang, Chao.,Su, Rui.,...&Lambers, Hans.(2021).Increasing nitrogen supply to phosphorus-deficient Medicago sativa decreases shoot growth and enhances root exudation of tartrate to discharge surplus carbon dependent on nitrogen form.PLANT AND SOIL,19. |
| MLA | He, Honghua,et al."Increasing nitrogen supply to phosphorus-deficient Medicago sativa decreases shoot growth and enhances root exudation of tartrate to discharge surplus carbon dependent on nitrogen form".PLANT AND SOIL (2021):19. |
入库方式： OAI收割
来源：地理科学与资源研究所
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