GTDB release R11-RS232 comprises 901,341 genomes (23% increase) organized into 199,923 species clusters (39% increase). Additional statistics for this release are available on the GTDB Statistics page.
Release notes
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GTDB manuscript describing resource updates from R06-RS202 to R10-RS226 published in NAR: https://doi.org/10.1093/nar/gkaf1040
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Links to the European Nucleotide Archive (ENA) have been added to the GTDB Taxonomy Tree Viewer and to genome pages as part of the External Links section. Users can now navigate directly from GTDB to the corresponding ENA entry for each genome. ENA now also includes cross-references back to GTDB, enabling bidirectional navigation between the two resources.
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Changed methodology for identifying and extracting 16S rRNA genes to mirror Prokka (barnap), including setting minimum length to 396 bp.
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WitChi (Schrempf et al., bioRxiv, 2025; WitChi: Efficient Detection and Pruning of Compositional Bias in Phylogenomic Alignments Using Empirical Chi-Squared Testing | bioRxiv) was applied to remove compositional bias from both the archaeal and bacterial multiple sequence alignments (MSAs) prior to tree inference.
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GTDB reference data is now mirrored at the University of Queensland in Australia and Aalborg University in Denmark: GTDB - Downloads
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We thank Jan Mares for his assistance in curating the cyanobacterial taxonomy.