Microbial ecophysiology: Shedding light on the re-greening of chlorotic cyanobacteria.

Cyanobacteria, key contributors to aquatic CO fixation, employ sophisticated acclimation strategies for survival under nitrogen-limited conditions. A new study reveals that red light influences the resuscitation of chlorotic cells through mechanisms involving the dark-operative protochlorophyllide reductase, which facilitates chlorophyll biosynthesis and re-greening under low-light conditions.