Metabarcoding of marine nematodes - evaluation of similarity scores used in alignment-based taxonomy assignment approach.

ABSTRACT:

Background

The diversity of organisms is being commonly accessed using metabarcoding of environmental samples. Reliable identification of barcodes is one of the critical steps in the process and several taxonomy assignment methods were proposed to accomplish this task, including alignment-based approach that uses Basic Local Alignment Search Tool (BLAST) algorithm. This publication evaluates the variability of 5' end of 18S rRNA barcoding region as expressed by similarity scores (alignment score and identity score) produced by BLAST, and its impact on barcode identification to family-level taxonomic categories.

New information

In alignment-based taxonomy assignment approach, reliable identification of anonymous OTUs to supraspecific taxa depends on the correct application of

SUBMITTER: Holovachov O 

PROVIDER: S-EPMC5136674 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature