A knowledgebase of biological processes in Arabidopsis. It covers biological pathways ranging from the basic processes of metabolism to high-level processes such as cell cycle regulation. While Arabidopsis Reactome is targeted at Arabidopsis pathways, it also includes many biological events from other plant species. This makes the database relevant to the large number of researchers who work on other plants. Arabidopsis Reactome currenlty contains both in-house curated pathways as well as imported pathways from AraCyc and KEGG databases. All the curated information in Arabidopsis Reactome is backed up by its provenance: either a literature citation or an electronic inference based on sequence similarity.