Fig. 3: Partial least squares regression analysis showing the relationship between transcripts and proteins of interest.

Transcripts are labeled as rows (horizontal), proteins as columns (vertical), and clustered based on similarity. Annotations are color-coded by nutrient and trace metal functional categories133. Note: more KEGG Orthologs were detected in the metatranscriptome than in the metaproteome, resulting in more rows on the x axis.