Transcriptomic and Metabolomic Profiling of Pleurotus eryngii Cultivated on Olive Mill Solid Waste-Enriched Substrates

Olive Mill Solid Waste (OMSW) presents an environmental challenge due to its toxicity and difficulties in its recycling. Here, we investigate how varying OMSW concentrations in the substrate affect the synthesis pathways of α-glucan and β-glucan polysaccharides, alongside transcriptional and metabolic changes in Pleurotus eryngii. We also assessed the mushroom’s protein and nitrogen content.