基于知识图谱分析的土壤氮循环功能基因研究进展
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1.中国农业大学土地科学与技术学院;2.合肥工业大学土木与水利工程学院

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基金项目:

国家自然科学基金项目(41877412)、国家高层次青年人才项目(2016)、中国农业大学2115人才培育发展支持计划(1191-00109012)


Progress of Functional Genes Related to Soil Nitrogen Cycling Based on Knowledge Mapping
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Affiliation:

1.China Agricultural University College of Land Science and Technology;2.College of Civil Engineering, Hefei University of Technology;3.Collage of Land Science and Technology, China Agricultural University

Fund Project:

the National Natural Science Foundation of China (No. 41877412), the National High Level Youth Talent Project (2016), and 2115 Talent Development Support Plan of China Agricultural University (1191-00109012)

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    摘要:

    土壤氮循环功能基因广泛地参与包括固氮、氨化以及硝化和反硝化作用等一系列生态过程,是氮素生物地球化学循环的关键组成部分,在很大程度上影响土壤生产力、全球环境变化以及碳中和可持续发展。近几十年来,分子生物学和微生态学技术的快速发展极大地促进了土壤氮循环密切相关的功能基因以及其功能微生物群落特征等方面的研究。本研究利用检索自Web of Science数据库中2001—2020年期间土壤氮循环功能基因相关文献,结合R语言科学知识图谱分析方法,从发文量、高被引论文、高频关键词及历史直接引文等方面对土壤氮循环功能基因研究现状进行了系统分析,并总结了土壤氮循环功能基因领域的研究动态、热点和发展趋势。结果表明:1)应用分子生物学技术挖掘土壤氮循环相关微生物功能基因及群落结构探索土壤氮循环的微生物学机制,是当前土壤氮循环研究领域的热点及切入点;2)土壤氮循环功能基因研究主要集中于3个方面:①利用宏基因组学等技术对土壤氮循环相关的功能基因进行筛选、识别和注释,从而发现新的微生物功能基因序列、更新引物数据库等;②环境因子及管理措施对土壤氮循环相关微生物指标的影响;③利用功能基因丰度表征土壤氮循环过程相关功能微生物的数量变化,以及功能基因与土壤性质、微生物群落结构间关系分析,以期揭示土壤氮循环过程的分子机制;3)土壤氮循环功能基因研究领域的历史发展脉络:从氮循环功能基因筛选、鉴定、识别、相应引物设计及分析方法确定等,到土壤氮循环功能基因的影响因素(或环境条件),以及当前结合土壤氮循环相关功能基因活性、丰度与功能微生物种群、群落结构甚至土壤性质数据,综合探讨土壤氮循环微生物机制。

    Abstract:

    Functional genes related to soil nitrogen (N) cycling are widely involved in a series of ecological processes, including N fixation, ammonification, nitrification and denitrification, and are key components of the N biogeochemical cycling, which greatly affects soil productivity, carbon neutralization, and agricultural sustainable development, as well as global environmental changes. In recent decades, the rapid development of molecular and microecology technology has promoted the research about functional genes related to soil N cycle and their microbial functional communities. In order to objectively and analyze the research trends, hotspots, and historical trends in the field of functional genes related to soil N turnover, the pertinent literature retrieved from the Web of Science database from 2001 to 2020 was analyzed from four aspects of publications amount, highly cited papers, high-frequency keywords and historical direct citations based on knowledge mapping. The results showed that: (1) The application of molecular biology techniques to excavate the functional genes and community structure related to soil N turnover so as to explore the microbiological mechanism is the current hotspot and entry point in the research field. (2) The research about soil N turnover functional genes mainly focused on three aspects: 1) Using metagenomics and other technologies to screen, identify and annotate the functional genes related to soil N turnover, so as to discover new microbial functional gene sequences and updates primer database, etc.; 2) Effects of environmental factors and agricultural management practices on soil N turnover related microbial indicators; 3) Using functional gene abundance to characterize the soil N cycling processes-related functional microorganisms, as well as analyze the relationship between functional genes, soil properties, and microbial community structure, in order to reveal the molecular mechanism of soil nitrogen turnover. 3) The historical development context of soil N turnover functional genes was from the screening, identification, identification, corresponding primer design and analysis method determination of N-cycling functional genes, to the influencing factors (or environmental conditions) of soil N turnover functional genes, combined with the current data of the activity, abundance of functional genes related to soil N turnover, and functional microbial populations, community structure and even soil properties, to comprehensively explore the microbial mechanism of soil N cycling.

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吴汉卿,阮楚晋,万炜,李胜龙,裴丁仪,韩苗,陈国炜,刘莹,朱堃,王钢.基于知识图谱分析的土壤氮循环功能基因研究进展[J].土壤学报,,[待发表]
wu han qing, ruan chu jin, wan wei, li sheng long, pei ding yi, han miao, chen guo wei, liu ying, zhu kun, wang gang. Progress of Functional Genes Related to Soil Nitrogen Cycling Based on Knowledge Mapping[J]. Acta Pedologica Sinica,,[In Press]

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