show Abstracthide AbstractThis study investigates the transcriptomic profiles of two Streptomyces strains, ZD11-M4 and ZD11-SALKO, to understand the molecular mechanisms underlying daunorubicin production and the associated stress responses. Strain M4 is a high-yield daunorubicin-producing mutant derived from the parental strain ZD11-SALKO, while SALKO is a non-producing control.