I have encountered an issue that I was trying to map taxonomy to an otu table. The barcode is trnL. I have managed to get all viridiplantae trnL sequences from NCBI as a database for local blast, and the associated lineage to each sequence entry. Also I have the representative sequences by vsearch. I wonder if there is a way to create the id_to_taxonomy.txt file as in assign_taxonomy.py in qiime.