I have a few questions about these three methods.
- We commonly use 16s rRNA to identify species and construct a phylogenetic tree. If there's a new isolate from a new and undiscovered ecosystem, should we confirm this new isolate identity with ANI taxonomy/ genome to genome distance criteriacalculation (GGDC)?
- If that isolate has a high similarity with a certain species in the 16s rRNA analysis result, should we proceed to analyze further with ANI/GGDC? Or just let it be because we have a robust 16s rRNA analysis? How can we be sure with our 16s rRNA BLAST result?
- When should we use 16s rRNA rather than ANI/GGDC and vice versa?
- Is it always necessary to confirm 16s rRNA analysis with ANI/GGDC? (Assuming there's a lot of closely-related genome data available in databases)
- Should we confirm the ANI result with GGDC and vice versa?