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Acta Prataculturae Sinica ›› 2022, Vol. 31 ›› Issue (4): 189-199.DOI: 10.11686/cyxb2021071

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The knowledge domain and emerging trends in plant root exudates: a bibliometric analysis based on CiteSpace

Xiao-jia WANG1,2(), Jin ZOU1, Bing CAO1(), Jia-xin LIU1, Xue-rui FENG1, Yun-mao LI1, Shang-yu LI1   

  1. 1.School of Agriculture,Ningxia University,Yinchuan 750021,China
    2.School of Agriculture,Ningxia Polytechnic,Yinchuan 750021,China
  • Received:2021-02-25 Revised:2021-06-16 Online:2022-04-20 Published:2022-01-25
  • Contact: Bing CAO

Abstract:

Root exudates are important carriers for substrate and metabolite exchange and information transmission between plants and soil. This study accessed a total of 4047 publications on root exudates in the core journals whose contents were included in Web of Science from 1998 to 2020, and used CiteSpace software to identify research themes and topics of current interest. It was found that: 1) The total publications and average citations per paper of the surveyed research showed a linear increase with time; 2) Institutions from the USA and China were the most active in this field, followed by Germany, Japan, Australia and France, occupied the most dominant positions; 3) Chinese Academy of Sciences, Nanjing Agricultural University, CSIC, and University of Western Australia are obvious leaders in terms of the total number of publications and average citations per research paper. Plant Sciences, Soil Sciences, Agronomy, Environmental Sciences, Microbiology and Ecology were the most frequently used subject categories. The Netherlands journal Plant and Soil is a clear leader in the total number of publications (256) and h-index, and thus very influential in academia; 4) Plant root exudates research was most often linked with keywords “rhizosphere”, “plant”, “soil”, “organic acid”, and “allelopathy”. Finally, based on current research, we infer that future research will move towards a focus on plant-soil-microbe interactions and mechanisms mediated by root exudates, and this will have important implications for elucidating the dynamics of rhizosphere microecology and for providing practical guidelines for plant culture and crop husbandry.

Key words: visualization, cooperation network, co-occurrence analysis, burst detection