plant-metabolomics
Plant metabolomics is the large-scale study of the complete set of small molecules (metabolites) produced by plants, using techniques like mass spectrometry and NMR to profile thousands of compounds simultaneously. These metabolites include pigments, defense compounds, hormones, and nutrients that underpin nearly every aspect of plant physiology. By mapping these chemical fingerprints, researchers can link genetic variation to functional traits, accelerating breeding for stress tolerance, nutritional quality, and pharmaceutical compound discovery.
PubMed · 2026-04-01
Scientists have created a powerful imaging technique that can photograph the chemical activity happening inside plant tissues — revealing where specific molecules are located without needing to tag or alter the plant. This review summarizes how the technology works and what it has already uncovered about plant metabolism, medicinal compounds, and how plants respond to disease and stress.
Three major ionization platforms — MALDI, DESI, and SIMS — each offer distinct trade-offs in spatial resolution and sensitivity for mapping plant chemistry, giving researchers a toolkit for different research questions.
MSI has enabled direct spatial mapping of bioactive compounds in medicinal plants, pinpointing exactly which tissues produce and store pharmacologically relevant molecules.
The technique has revealed molecular-level mechanisms of plant-microbe interactions and stress responses, providing insights into metabolic regulatory networks that were previously inaccessible without destructive sampling.