The evolution of monoderm and diderm cell envelopes, and thus of Gram-positive and Gram-negative bacteria, is a long-standing question. In this Opinion article, Tocheva, Ortega and Jensen propose, based on recent electron cryotomography data, a new model that places sporulation at the heart of bacterial evolution.
- Elitza I. Tocheva
- Davi R. Ortega
- Grant J. Jensen
