RiceGeneThresher is a public online resource for mining genes underlying genome regionsof interest or quantitatie trait loci (QTLs) in the rice genome. It is a compendium of rice genomic resources consisting of genetic markers, genome annotation, ESTs, protein domain, gene ontology, plant stress-responsive genes, metabolic pathways and protein-protein interaction predictions. The system integrates these diverse data sources and provides a powerful web-based application..