A bibliometric analysis of fungal volatile organic compounds

Abstract

Background: Fungal volatile organic compounds (fVOCs) serve as crucial mediators in ecological interactions and hold significant potential for applications in agriculture and biotechnology. Fungi establish inter-organism communication through volatile molecules, enabling them to regulate plant growth and interact with diverse soil-dwelling organisms. This study integrates a comprehensive literature survey and bibliometric analysis to capture the complexity and interdisciplinary nature of fVOC research, drawing on PubMed, Google Scholar, and Scopus databases spanning 2000 to 2023.

Results: The findings highlight the role of fVOCs as essential chemical messengers in inter-organismic communication, their contribution to sustainable agricultural practices as plant growth promoters, and their significance in human sensory perception, particularly in culinary contexts. Our bibliometric analysis of 3,738 publications maps fVOC research trends worldwide using co-occurrence and -citation analyses. The latter uncovered an early research focus on yeast fermentation and antimicrobial activity, which has since expanded to sustainable agriculture, biofumigation, endophytic fungi, and the development of advanced analytical techniques. Emerging research clusters focus on plant-fungus communication, the biotechnological production of aroma compounds, and the influence of fVOCs on human sensory experiences.

Conclusions: The fVOC research field has matured during the last two decades. Promising avenues for future exploration include the improvement of crop resilience, the advancements of eco-friendly technologies, such as biological pest management or VOC-driven fertilisation, and a better understanding of the intricate volatile communication that drives fungal interactions with other kingdoms of life.

Keywords: Bibliometric analysis; Biofumigation; Biotechnology; Fungal volatile organic compounds; Inter-organismic communication; fVOCs.

Fig. 1

Annual publication counts in fVOC science among search terms and overall publication from 2000 to 2023

Fig. 2

Network visualisation of the author keyword co-occurrence analysis of the pooled search queries. The VOSviewer determined several clusters from 67 author keywords separated by different colors

Fig. 3

Network visualisations of the co-occurrence analysis using VOSviewer based on author keywords within specific time ranges. Co-occurrence analysis was performed for the periods 2000–2004 (A), 2005–2010 (B), 2011–2015 (C), 2016–2020 (D), and 2021–2023 (E)

Fig. 4

Network visualization of the co-citation analysis using VOSviewer, based on the pooled search terms, highlighting the network of the 20 most influential works identified in our literature review