R package SQMtools [64 (link)] was used to identify the taxonomic origin of genes related to lignocellulose degradation and nitrogen metabolism. Taxonomic information was extracted from the annotated dataset of each species using the subsetFun and subsetTax functions of SQMtools. Counts transformed into relative abundances were allocated to the corresponding substrates and bacterial phyla. Adjacency matrices were then generated and visualized using Circos webtool [65 (link)].
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