A Review on the Potential of Ginger Essential Oil-based Nanotechnology for Controlling Tropical Plant Diseases

Abstract

The increasing prevalence of plant diseases in tropical agriculture, driven by climate change, pathogen resistance, and unsustainable pesticide use, necessitates the development of eco-friendly and effective disease management strategies. Ginger essential oil (GEO), derived from Zingiber officinale, is a natural antimicrobial agent with proven efficacy against a wide range of plant pathogens, including bacteria, fungi, and viruses. Its bioactive compounds, such as gingerols, shogaols, and zingiberene, exhibit multiple modes of action, making GEO a promising alternative to synthetic pesticides. Its volatility, short shelf life, and limited solubility under field conditions restrict its direct application in agriculture. Nanotechnology offers a transformative solution to these limitations by encapsulating GEO in advanced nanocarriers, such as liposomes, nanoemulsions, and polymeric nanoparticles, which improve its stability, bioavailability, and controlled release. Nanoformulated GEO has demonstrated enhanced antimicrobial efficacy in both laboratory and field studies, outperforming pure GEO and synthetic agrochemicals in controlling plant pathogens like Fusarium oxysporum, Alternaria alternata, and Xanthomonas campestris. GEO nanoformulations are biodegradable and pose minimal risks to non-target organisms and the environment, aligning with the principles of sustainable agriculture. Despite these promising outcomes, challenges such as high production costs, regulatory uncertainties, and limited farmer awareness hinder the large-scale implementation of GEO nanotechnology. It should focus on optimizing nanoformulation techniques, exploring synergistic combinations with other natural antimicrobials, and integrating GEO nanoformulations into integrated pest management (IPM) strategies. Collaboration between researchers, policymakers, and farmers is essential to overcome adoption barriers and ensure effective deployment. By addressing these challenges, GEO-based nanotechnology has the potential to revolutionize tropical agriculture, providing a sustainable, safe, and innovative solution for managing plant diseases while reducing dependency on harmful chemical pesticides.