Integrating Mitochondrial Aerobic Metabolism into Ecology and Evolution

Trends Ecol Evol. 2021 Apr;36(4):321-332. doi: 10.1016/j.tree.2020.12.006. Epub 2021 Jan 10.

Abstract

Biologists have long appreciated the critical role that energy turnover plays in understanding variation in performance and fitness among individuals. Whole-organism metabolic studies have provided key insights into fundamental ecological and evolutionary processes. However, constraints operating at subcellular levels, such as those operating within the mitochondria, can also play important roles in optimizing metabolism over different energetic demands and time scales. Herein, we explore how mitochondrial aerobic metabolism influences different aspects of organismal performance, such as through changing adenosine triphosphate (ATP) and reactive oxygen species (ROS) production. We consider how such insights have advanced our understanding of the mechanisms underpinning key ecological and evolutionary processes, from variation in life-history traits to adaptation to changing thermal conditions, and we highlight key areas for future research.

Keywords: bioenergetics; life-history trade-off; metabolic rate; mitochondrial efficiency; mitochondrial uncoupling; reactive oxygen species.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Adaptation, Physiological
  • Adenosine Triphosphate / metabolism
  • Energy Metabolism*
  • Humans
  • Mitochondria*
  • Reactive Oxygen Species / metabolism

Substances

  • Reactive Oxygen Species
  • Adenosine Triphosphate