Biocontrol mechanisms of endophytic fungi

Abstract

Background: Scientific approaches into modern agricultural systems, as opposed to the use of synthetic pesticides in food production, became important by exploring endophytic fungi capable of protecting plants against pathogens for maximum crop productivity. Main body: Diverse endophytic microbes colonizing the internal tissue of plants exhibit beneficial and pathological effects on plants. The beneficial endophytic fungi assisted plants in the control of pathogenic endophytic fungi in plants due to their ability to directly or indirectly promote plant health. Inefficient agricultural practices and environmental factors contribute to the disease emergence in plants. Endophytic fungi employed diverse mechanisms in phytopathogen control by activating and inducing plant resistance through gene expression, synthesis of fungi-derived metabolite compounds, and hormonal signaling molecules. The mutual coexistence between endophytic fungi and host plants remains an important mechanism in disease suppression. An in-depth understanding and selection of beneficial endophytic fungi and interaction between pathogens and host plants are important in managing challenges associated with the endophyte biocontrol mechanisms. Conclusion: Research findings on the use of endophytic fungi as bioinoculants are advancing, and understanding endophytic fungi antibiosis action through the synthesis of biocontrol agents (BCAs) can, however, be explored in integrated plant disease management. Therefore, in this review, the biocontrol mechanism of endophytic fungi against plant pathogens was highlighted.