Abstract
Proteomic analysis provides vital bioinformation for revealing the mechanisms of coal biodegradation. Yet, proteomics-based studies of coal biodegradation are generally lacking. We first studied the physio-chemical changes in lignite biodegradation by a previously isolated fungus (Fusarium sp. NF01). The strain was able to degrade lignite showing significant changes in the ultraviolet–visible absorbance, surface structure and a 40.9% increased free radical concentration of residual lignite. Subsequently, isobaric tandem mass tags (TMT) and bioinformatic analysis were used for the quantitative and qualitative analyses of Fusarium sp. NF01 secretome. The expression levels of 62 proteins were significantly altered in the lignite-supplemented medium: 20 proteins were upregulated (fold-change, FC ≥ 2; P-value ≤0.05) and 42 proteins were downregulated (FC ≤ 0.5, P-value ≤0.05). Bioinformatic analysis indicated that Fusarium sp. NF01 acclimatized to the lignite-rich environment by regulating the expression of proteins involved in defense, lignite degradation, detoxification, and cellular metabolism. These findings may help promote sustainable and value-added coal utilization.
Published Version
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