# Large portion of Cyanobacteria

**URL:** https://forum.qiime2.org/t/large-portion-of-cyanobacteria/23232
**Category:** User Support
**Tags:** taxonomy
**Created:** [June 2, 2022, 12:12pm UTC](https://forum.qiime2.org/t/large-portion-of-cyanobacteria/23232 "2022-06-02T12:12:13Z")
**Posts on this page:** 1
**Showing post:** 22

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### Author: ![SoilRotifer](https://forum.qiime2.org/user_avatar/forum.qiime2.org/soilrotifer/32/21071_2.png) [@SoilRotifer](https://forum.qiime2.org/u/SoilRotifer)
#### Post date: [July 13, 2022, 6:54pm UTC](https://forum.qiime2.org/t/large-portion-of-cyanobacteria/23232/22 "2022-07-13T18:54:26Z")

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Hi @Sabrin,

Everything looks fine to me. However, know that GenBank and SILVA use slightly different taxonomic nomenclature and also use different prefixes. Prior to merging the taxonomy, you'll likely want to run `rescript edit taxonomy ...` as I've described here:

> [@DADA2 and Deblur outputs are extremely different](https://forum.qiime2.org/t/dada2-and-deblur-outputs-are-extremely-different/23574/9):
>
> Yes there is. You should be able to follow one of these tutorials: From here you should be able to run qiime feature-table merge-taxa... and qiime feature-table merge-seqs ... to combine the GenBank and SILVA data. Note that, prior to merging, there is a chance you'd have to run qiime rescript edit-taxonomy ... on the fetched NCBI taxonomy data to change the k\_\_ prefixes to d\_\_, so that it matches SILVA. Assuming you are downloading the standard 7 ranks (kpcofgs). Otherwise you'll have to …

-Mike

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