Microbiology Research Journal International

The sustainability of global agriculture is increasingly threatened by climate change, soil degradation, declining biodiversity, and the overuse of chemical fertilizers and pesticides. In this context, plant- and soil-associated microbiomes have emerged as vital allies for achieving resilient and eco-friendly farming systems. This review synthesizes current knowledge on the diversity, composition, and functional roles of plant microbiomes, with a focus on nutrient acquisition, plant growth promotion, stress tolerance, and disease suppression. Case studies highlight the potential of microbiome applications across major crops such as corn, wheat, sugarcane, and legumes. Furthermore, advances in microbiome engineering—including synthetic microbial communities, metagenomics, multi-omics approaches, and CRISPR-based synthetic biology—are explored as transformative tools for harnessing beneficial microbes. Despite significant progress, challenges such as inconsistent field performance, interactions with native microbial communities, storage and formulation of inoculants, and regulatory acceptance remain barriers to large-scale application. Looking ahead, the integration of microbiome-based strategies with sustainable farming practices, artificial intelligence, and climate-smart agriculture presents promising opportunities to achieve the United Nations Sustainable Development Goals of Zero Hunger, Climate Action, and Life on Land. This review emphasizes the need for responsible innovation, field validation, and supportive policies to realize the full potential of microbiomes in driving agricultural sustainability.