基于CiteSpace软件的丛枝菌根真菌近30年研究态势分析

Analyses of the research status of arbuscular mycorrhizal fungi in the last 30 years based on CiteSpace software

丛枝菌根(arbuscular mycorrhizal,AM)真菌为植物专性共生真菌,可与大多数陆生植物共生,在植物养分吸收、抵御不良环境、维持生态平衡和植物多样性等方面具有重要作用。为了解AM真菌研究发展现状,本文运用CiteSpace软件,对1990–2020年Web of Science和CNKI数据库中的关键词、文献所属国家、机构、期刊、核心文献与作者进行可视化分析。结果表明,该领域发文量不断增长,其中美国发文量和中心度最高,中国发文量位居第二。国际研究机构中,西班牙高等学术研究委员会中心度最高,中国科学院发文量最高。通过对核心文献共被引和关键词突现及聚类分析发现,AM真菌研究领域不断拓展,研究深度不断增加。20世纪90年代开始,以新种描述、分类系统不断完善及培养技术改进为主;在各地菌种资源库逐步建立后,接种实验及效果评价相关研究逐渐增加;近年来环境变化的加剧使得重金属、干旱与盐胁迫以及植物修复等成为突现词。AM真菌共生的分子机理及与其他微生物的相互作用机制也成为当前研究热点。

Arbuscular mycorrhizal(AM)fungi are obligate symbiotic fungi of plants.They can establish symbiosis with most terrestrial plants and play an important role in plant nutrient absorption,tolerance of adverse environments,and maintenance of ecological balance and plant diversity.To reveal the status of AM fungal research,CiteSpace software was used to visually analyze the keywords,countries,institutions,journals,core literature and core authors associated with literature indexed in the Web of Science and CNKI databases from 1990 to 2020.Our results show that the number of publications in this field is constantly increasing.The United States hold the highest number of publications and the greatest prominence,and China ranks second in number of publications.Among international research institutions,the Spanish National Research Council(CSIC)wins the highest reputation,while the Chinese Academy of Sciences publishes the greatest number of publications.Co-citation,keyword burst and cluster analysis of the core literature show that the research field of AM fungi is expanding and the research depth degree is increasing.Since the 1990s,novel species descriptions and classification systems are largely changed and amended,and culture techniques are improved.A considerable number of resource banks,herbaria or culture collections are established in various countries.Inoculation experiments and evaluation of inoculation results gradually develop.In recent years,key words concerning aggravated environmental changes caused by heavy metal pollution,drought stress,and salt stress and plant repair continue to increase.The molecular mechanisms of AM fungal symbiosis and interactions of AM fungi with other microorganisms have also become hot research topics.