Infinite Crisis - Atomic Poison Ivy Champion Profile

Awakening in a forest of mutated flora, adapted to a bleak radioactive landscape, Pamela found herself transformed into something more plant than woman. She sensed what few plants that had survived, hearing their collective thoughts and will. With her new-found link to the Green, Pamela had an epiphany. These astounding and beautiful mutant survivors needed a guardian, they needed her. She would ensure a better world, where her precious children would never again be threatened by humans. Instead, the humans would fear nature.
The nuclear war's radioactive fallout withered plant-life across the world, overwhelming Poison Ivy with the screams of Earth's dying plants and sending her into a catatonic state.