This database provides plant genome sequence data gathered from whole genome sequencing and assembly Arabidopsis thaliana rice Medicago truncatula genome survey sequencing maize and expressed sequence tags ESTs It enables users to access speciesspecific nucleotide sequences for approximately 60000 plant species and putative unique transcript assemblies PUTs for 100 plant species There is also a set of custom browsers and tools for exploring gene space in major crops and model plant species; evaluation and documentation of gene model evidence; and links to online resources for plant genomic research The database can be searched by keyword by species and with the use of a tablemaking tool that presents data in custommade tables