Temperature-dependent lifespan changes in Drosophila are actively controlled by the Turandot gene family, not passive thermodynamic effects. Suppressing tot gene expression extends lifespan across temperature ranges with sex-specific effects, identifying these genes as direct genetic regulators of thermal aging.
Key Points
- Turandot genes actively regulate lifespan independent of temperature
- tot gene knockdown extends longevity across multiple temperatures
- Sex-specific effects suggest divergent stress-allocation strategies
Longevity Analysis
This research demonstrates that thermal stress responses operate through active genetic regulation rather than simple metabolic adjustment. The identification of tot genes as separable longevity regulators has implications for understanding how organisms sense and respond to environmental temperature — a fundamental signal that modulates aging rate. The sex-specific effects point to distinct physiological strategies for managing thermal stress and its consequences, suggesting that single-intervention approaches to temperature-based longevity may miss important biological variance. Understanding which signals drive these regulatory pathways, and how they interact with other stress-response mechanisms, is essential for developing temperature-aware interventions.
Original published by Wiley Aging Cell, by Jessica M. Hoffman, A. Tate Lasher, Michael P. Fitch, Steven N. Austad, Liou Y. Sun .