The COGEME phytopathogen EST database currently contains expressed sequence tags (ESTs) from eleven species of phytopathogenic fungi and two oomycete species. In order to reduce sequence redundancy, sequence assembly software was used to join together ESTs representing the same gene into a single contig or unisequence. Unisequences have been annotated based on similarity to known sequences and assigned to a functional classification group. The database can be queried by simple text queries against annotation, by functional classification, by similarity to known genes from Saccharomyces cerevisiae and using BLAST algorithms. Unisequence datasets can be downloaded. The database also contains an analysis of transcript abundance in Magnaporthe grisea and a demonstration of the use of EST data to predict the presence of amino acid pathways in different organisms. The database is described in Soanes et al. (2002).