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External phosphorus enhances the efficient acquisition of phosphorus by alfalfa (Medicago sativa L.) through its interaction with root morphological traits and

文献类型：期刊论文

作者Du, Tengyue1,2,3,5; Zhao, Shaoting6; Zheng, Xiaoqin7; Ding, Xiaofan8; He, Huan9; Xie, Gang10; Zhu, Junhao11; Kou, Yuyang9; Shen, Weibo1,2,3,4,5,9
刊名RHIZOSPHERE
出版日期2024-03-01
卷号29页码:10
关键词P absorption P toxicity Root trait Malic acid Alfalfa(Medicago sativa L)
DOI10.1016/j.rhisph.2024.100861
通讯作者Shen, Weibo(shenweibo@nwafu.edu.cn)
英文摘要Root morphological characteristics and rhizosphere carboxylates are the critical factors for phosphorus (P) absorption in forage crops such as alfalfa (Medicago sativa L.) include root morphological characteristics and rhizosphere carboxylates. This study explored alfalfa P uptake across various P application levels and evaluated the respective contributions of root morphological traits and rhizosphere carboxylates to this process. We analyzed root morphological characteristics and composition and amounts of rhizosphere carboxylates and their contribution in P uptake after cultivating alfalfa in pots with seven distinct P application levels for 9 weeks. The results revealed that supplying P enhanced the growth of aboveground and underground plant parts. At a P application level of 12 mg kg - 1, alfalfa stems exhibited the highest concentration and uptake of P. Concurrently, root parameters such as root length (RL), root surface area (RSA), root volume, root tips and the amount of rhizosphere carboxylates were the highest. Although some P was allocated to aboveground parts, root exposure to higher P supply levels (48 and 96 mg kg - 1) can lead to P toxicity and reduce the P absorption. Structural equation modeling (SEM) and regression analysis demonstrated that RSA, root tips and rhizosphere carboxylate content significantly affected alfalfa P absorption. Among them, malate was crucial for promoting P uptake in alfalfa under high P concentrations. In summary, this study elucidated the dominant factors affecting plant P absorption and identified the optimal concentration (12 mg kg - 1) for alfalfa growth by examining the response of alfalfa to varying P concentrations. Additionally, this study also provides a foundation for the development of low -P agriculture in artificial alfalfa plantations.
WOS关键词RHIZOSPHERE CARBOXYLATES ; LIMITED PHOSPHORUS ; PERENNIAL LEGUMES ; ORGANIC-ACIDS ; SOIL ; PLANTS ; PHOSPHATE ; IMPROVE ; GROWTH ; CROP
资助项目National Natural Science Foundation of China[U2243225] ; Yulin science and technology plan project[CXY-2022-170] ; Forestry Science and Technology Innovation Project of Shaanxi Province[SXLK20210202] ; Fundamental Research Funds for the Central Universities[2023HHZX002] ; Science and Technology Plan Project of Xi'an[2023JH-NJGG-0027] ; Education Department of Shaanxi Provincial Government serves the local special plan project[23JE017]
WOS研究方向Agriculture ; Plant Sciences
语种英语
WOS记录号WOS:001178236700001
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; Yulin science and technology plan project ; Forestry Science and Technology Innovation Project of Shaanxi Province ; Fundamental Research Funds for the Central Universities ; Science and Technology Plan Project of Xi'an ; Education Department of Shaanxi Provincial Government serves the local special plan project
源URL[http://ir.igsnrr.ac.cn/handle/311030/203493]  
专题中国科学院地理科学与资源研究所
通讯作者Shen, Weibo
作者单位1.Chinese Acad Sci, Res Ctr Soil & Water Conservat & Ecol Environm, Yangling 712100, Shaanxi, Peoples R China
2.Minist Educ, Yangling 712100, Shaanxi, Peoples R China
3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
4.Northwest A&F Univ, Inst Soil & Water Conservat, Coll Soil & Water Conservat Sci & Engn, Yangling 712100, Shaanxi, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Agr Technol Promot Ctr Xian, Xian 710000, Shaanxi, Peoples R China
7.Qinba Ecol Protect Ctr Hanzhong, Hanzhong 723000, Peoples R China
8.Univ Jinan, Sch Water Conservancy & Environm, Jinan 250022, Peoples R China
9.Northwest A&F Univ, Coll Sci, Yangling 712100, Peoples R China
10.China Inst Water Resources & Hydropower Res, Beijing 100048, Peoples R China
推荐引用方式
GB/T 7714		 Du, Tengyue,Zhao, Shaoting,Zheng, Xiaoqin,et al. External phosphorus enhances the efficient acquisition of phosphorus by alfalfa (Medicago sativa L.) through its interaction with root morphological traits and[J]. RHIZOSPHERE,2024,29:10.
APA Du, Tengyue.,Zhao, Shaoting.,Zheng, Xiaoqin.,Ding, Xiaofan.,He, Huan.,...&Shen, Weibo.(2024).External phosphorus enhances the efficient acquisition of phosphorus by alfalfa (Medicago sativa L.) through its interaction with root morphological traits and.RHIZOSPHERE,29,10.
MLA Du, Tengyue,et al."External phosphorus enhances the efficient acquisition of phosphorus by alfalfa (Medicago sativa L.) through its interaction with root morphological traits and".RHIZOSPHERE 29(2024):10.

入库方式： OAI收割

来源：地理科学与资源研究所

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