Taxonomic classification of A. naccarii contig annotations. Assignment of annotations obtained from BLASTX and BLASTN comparisons (e-value 1e-03) of contigs against NCBI nr and nt databases to different species was performed with MEGAN 4, based on the absolute best BLAST hits. The bar chart shows contigs annotated with the 24 more-represented species in annotations from nr. The contribution of annotations from nt, for the same species, is marked in red. “Others” includes the 34 species less represented in nr annotations.