Fig. 4

Fungal transcriptional responses to forest associations and soil layers. a Relative abundance (in TPM) of RNA transcripts according to the functional fungal guilds. b Aggregated sum of transcripts (TPM) mapped to genes assigned to KOG class J fungal transcripts coding for the core translational machinery (KOG class J), a proxy for fungal growth rate. c Differences in relative transcription levels of genes involved in the uptake of carbon compounds, nitrogen compounds, and inorganic ions in saprotrophic (SAP) and ectomycorrhizal (EM) fungi. The relative transcription levels of all genes for a specific function (mean ± 1 S.E.) in relation to all protein-coding genes in each sample are shown. Boxplots are Tukey’s test, where the center indicates the median, lower, and upper hinges on the first and third quartiles, respectively, and each whisker is 1.5 × the interquartile range (IQR) from its hinge