Anonymous DB (input sequences)
Pre-installed DB: PR2 / SILVA SSU
Mainly eukaryotic 18S rRNA, including protists. The full PR2 database also retains bacterial, archaeal and organellar SSU sequences. Reference selection for a tree must use a homologous marker region. Parc (SILVA) is the broad collection; Ref NR99 (SILVA) reduces redundancy at 99% similarity after quality/length filtering. Hits are selected only from the chosen database. References: PR2 — Guillou et al. (2013), license; SILVA — Quast et al. (2013), CC BY 4.0, modifications.
User DB (optional)