Synergistic interactions between glycogen and trehalose mediate adaptation to the stationary phase in <i>E. coli</i>

manages carbon storage during starvation through glycogen and trehalose, working in a functionally specialized yet synergistic partnership. Critically, these pathways are interconnected with global transcriptional regulatory systems-cAMP-CRP and Cra-coordinating nutrient scavenging, stress responses, and energy metabolism. Disrupting both pathways dysregulates these regulators, causing bacteria to initially outcompete wild-type cells through enhanced resource acquisition, but ultimately compromising long-term survival as stress resistance is impaired. Understanding stationary phase physiology is essential because this growth-arrested state characterizes many natural habitats.