植物研究2025，Vol.45Issue(5)：662-674,13.DOI:10.7525/j.issn.1673-5102.2025.05.002
植物对土壤氮吸收的多维度策略及其生态意义
Diversification of Plant Soil Nitrogen Uptake Strategies and Its Ecological Implications
摘要
Abstract
The process of plant nitrogen(N)uptake from soil and its multidimensional strategies significantly influence the biodiversity and carbon sequestration functions of ecosystems.This paper systematically reviewed the development of N nutrition theories in plants,introducing mineral nutrition theory and mineral-organic nutrition theory.It focused on the multidimensional strategies that plants use to absorb soil N,covering four main aspects:(1)multiform N absorption,which includes both inorganic N(e.g.ammonium and nitrate)and a range of low molecular weight organic N forms such as amino acids,amino sugars,and oligopeptides;(2)seasonal variation in N absorption,in which plants exhibit significant seasonal variations in both the magnitude and patterns of uptake of various forms of soil N,and different species may display distinct differences in uptake patterns;(3)stratified soil layer absorption,in which the root system configuration and the variation of available soil N across soil vertical profiles influence plant absorption of N amounts and N forms at different soil depths;(4)symbiotic absorption differentiation,in which nitrogen-fixing bacteria,mycorrhizal fungi,and dark-septate endophytic fungi promote N uptake by plants and,to some extent,affect the plant's acquisition of different N forms.It was concluded that the multidimensional strategies of plant N uptake provide a basis for plant coexistence and niche differentiation in ecosystems,playing a key role in mitigating inter-plant competition,reducing N loss,and improving N use efficiency in ecosystems.However,research on plant N uptake strategies remains insufficient,with several key scientific issues yet to be resolved,such as the in-situ availability and dynamics of soil N,the turnover differences of various available N forms in soil,the molecular biological mechanisms of plant N uptake strategies,and the contributions of different available N forms to plant N nutrition.关键词
土壤氮/低相对分子质量有机氮/氮吸收策略/生态系统/生态位分化Key words
soil nitrogen/low molecular weight organic nitrogen/uptake strategies of nitrogen/ecosystem/niche differentiation分类
农业科技引用本文复制引用
高雷,杨瑞彤,刘宝东,贾淑霞,郭亚芬,崔晓阳..植物对土壤氮吸收的多维度策略及其生态意义[J].植物研究,2025,45(5):662-674,13.基金项目
吉林省教育厅科学技术研究项目(JJKH20240091KJ) （JJKH20240091KJ）
吉林省青年科技人才托举工程项目(QT202324) （QT202324）
国家自然科学基金项目(32401555 （）
42071064) （）
吉林省杰出青年科技人才项目(20240602010RC). （20240602010RC）
