The IDNS® Fungal Centroid and Fungal Reference Databases have been refreshed to expand representation of fungal species and to update entries for synonyms and changes in nomenclature.
Implemented on April 4, 2026, this update covers the Fungal targets for 18S, 25-28S (D1/D2), and ITS. Each Fungal target has both a Centroid database and a much larger IDNS® Fungal Reference database. All sequences involved in the Centroid process, having a valid species name or synonym, get the benefit of being annotated with Centroid statistics such as confidence values, species group size, and outlier status. Each sequence that is the most representative of its species becomes a Centroid. The SmartGene Centroid databases host only one sequence for each valid species name.
Summary statistics for this update (r144u1247):
IDNS® ITS Fungi Centroids
- 49,349 different species represented by a Centroid (6,294 Genera)
- 1,103,810 Reference Sequences in the larger ITS database, IDNS® ITS Fungi References
- Annual averages: 750 species renamed/removed, 2800 new species, and 950 Centroid changes/shifts
IDNS® D1/D2 Fungi Centroids
- 38,316 different species represented by a Centroid (6,282 Genera)
- 301,359 Reference Sequences in the larger D1/D2 database, IDNS® 25-28S D1-D2 Fungi References
- Annual averages: 700 species renamed/removed, 2200 new species, and 400 Centroid changes/shifts
IDNS® 18S Fungi Centroids
- 13,579 different species represented by a Centroid (4,059 Genera)
- 99,797 Reference Sequences in the larger 18S database, IDNS® 18S Fungi References
- Annual averages: 300 species renamed/removed, 700 new species, and 50 Centroid changes/shifts
SmartGene's Centroid annotation process is a patent-protected procedure of SmartGene AG #EP2215578.