High hydrostatic pressure enhances chitinase activity and reveals metabolic regulation via transcriptomics in an abyssal fungus Purpureocillium lilacinum FDZ8Y1

Our research identified the excellent chitinase activity characteristics of P. lilacinum FDZ8Y1 under low temperature and high pressure, identified the metabolic pathway transformation of this fungus in response to HHP, explored the metabolic response models related to chitin degradation and utilization under these conditions, and further analyzed the functional correlations of these metabolic adaptations. This information provides a new idea and direction for further understanding the functional adaptability of deep-sea fungi and exploring the enzyme resources of deep-sea microorganisms.