利用文献计量学及文献可视化软件CiteSpace对国内外植物氮素代谢的研究现状、研究热点和发展趋势进行总结与分析,便于相关研究者了解本领域的研究现状.以2013-2022年Web of Science数据库(WoS)和中国知网数据库(CNKI)中植物氮素代谢研究相关论文为文献来源,对发文量、主要研究力量、文献共被引、关键词进行分析.研究表明,发文量整体呈现逐渐增长的趋势,中国、美国、西班牙、德国和巴西等国家在植物氮素代谢领域的影响力较大,国内外机构发文量较多的是农林类高校及科研单位.氮的吸收利用、氮利用效率、盐胁迫、铵信号的介导和氮代谢相关酶的研究构成了植物氮素代谢的重要基础.近10年国际上植物氮素代谢研究的热点为植物耐受性、氮利用效率、氨同化、参与氮代谢相关酶和蛋白质的生物合成等;国内研究热点主要集中在不同氮素形态对植物品质和产量的影响、植物的氮素利用效率、碳氮代谢等相关方向,此外耐旱性、乙烯是最新研究前沿.今后植物氮素代谢应进一步围绕氮素利用效率这一目标展开研究,对氮肥施用进行长期动态观测,研究定量标准;关注植物碳-氮代谢协同机制;基于多组学技术开展植物氮素代谢的相关基因研究;整合植物氮素代谢调控网络.
Bibliometric Analysis of Study on Plant Nitrogen Metabolism from 2013 to 2022
Bibliometrics and literature visualization software CiteSpace are used to summarize and analyze the research status,research hotspots and development trends of plant nitrogen metabolism at home and abroad,so as to facilitate relevant researchers to understand the current research status in this field.Using papers related to plant nitrogen metabolism research in the Web of Science database and China National Knowledge Infrastructure database from 2013 to 2022 as literature sources,and the number of publications,main research strength,co-citations of the literature,and keywords were analyzed.Research showed that the overall number of published articles was increasing gradually.Countries such as China,the United States,Spain,Germany and Brazil had greater influence in the field of plant nitrogen metabolism.Domestic and foreign institutions that published more articles were agricultural and forestry universities and scientific research institutions.The study of nitrogen uptake and utilization,nitrogen use efficiency,saline stress,ammonium signal mediation and nitrogen metabolism-related enzymes constituted an important research basis for plant nitrogen metabolism.In the past 10 years,the hotspots in international research on plant nitrogen metabolism were plant tolerance,nitrogen use efficiency,ammonia assimilation and the biosynthesis of enzymes and proteins involved in nitrogen metabolism,etc.Domestic research hotspots mainly focused on the effects of different nitrogen forms on plant quality and yield,plant nitrogen use efficiency,carbon and nitrogen metabolism and other related directions.In addition,drought tolerance and ethylene are the latest research frontiers.In the future,relevant research on plant nitrogen metabolism should further focus on the goal of nitrogen use efficiency,long-term dynamic observation of nitrogen fertilizer application and research on quantitative standards;focus on the synergistic mechanism of plant carbon-nitrogen metabolism;and research on genes related to plant nitrogen metabolism based on multi-omics technology;regulate network of integrating plant nitrogen metabolism.
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