Regulatory roles of AmyR in amylolytic enzyme production, cellulose utilization, conidiation, stress tolerance, and fruit decay capacity of Aspergillus niger.

Deletion of amyR in Aspergillus niger enhances cellulose utilization and impairs conidiation, stress tolerance, and fruit decay capacity, revealing its multifunctional regulatory roles.

• Why it matters: Understanding AmyR's diverse functions is crucial because it influences enzyme production, development, and environmental adaptation, impacting food processing and spoilage control.
• What they did: The study used multi-phenotypic and transcriptional analyses of amyR deletion mutants, examining enzyme activity, growth, conidiation, and stress responses in A. niger.
• The result: Findings show AmyR regulates not only amylolytic enzymes but also cellulose utilization, conidiation, stress resilience, and fruit decay, broadening its known roles in filamentous fungi.