Pbac

Pbac serves as a specialized genomic resource for studying microbial communities in giant panda gastrointestinal systems. This curated database addresses the unique bamboo-digesting adaptations of endangered ursids through two major releases: ​Version 1​ established the foundational collection with 2,684 metagenome-assembled genomes (MAGs) derived from hybrid Illumina-Nanopore sequencing, including 354 high-quality representatives that revealed significant novel microbial diversity. Version 2​ substantially enhanced genomic quality through integrated culturomics and PacBio HiFi sequencing, expanding to 466 species-level references (84% increase) with 213 newly documented species and five novel genera. Validation shows >92% mapping efficiency for microbiome analyses. Researchers can leverage Pbac for diverse applications including metagenomic profiling, conservation genomics, and investigating host-microbe coevolution in bamboo-digesting ecosystems. The database provides both individual genome access and bulk downloads of pre-compiled Kraken2 databases for efficient analysis pipelines.