Ionomics is the measurement of elemental composition of an organism using high-throughput profiling. It helps determine functional status and analyze gene networks. Ionomics studies how plants take up mineral nutrients and can be applied to fields like detecting heavy metals, cancer research, and long-term fertilizer treatments. Bioinformatics tools like the Purdue Ionomics Information Management System provide data management and analysis for the large datasets generated. Future prospects include using ionomics to manipulate nutrient accumulation and identify gene interactions regulating mineral nutrition.