GrainGenes is proud to introduce a new BLAST service (beta) for our wheat, barley, oat and rye collections. The new BLAST service harnesses the latest NCBI BLAST+ 2.10.0 with all our databases provided in the new version 5 database format and processing is load-balanced by multithreading. The new interface provides a drag-and-drop interface, multiple database selections with multiple query sequence support. New hit result visualizations include length distribution histograms, Kablammo diagrams for query-hit pairing indicating which parts of the query match which part of the hits, and Circos-style plots of queries and their top hits, reminiscent of Circoletto tools. Hit results also link to GrainGenes JBrowse instances where the queries target corresponding databases. The new BLAST service is powered by SequenceServer 2 (sequenceserver.com).