Rhizobia are a diverse group of soil bacteria that induce the formation of nitrogen-fixing nodules on the roots of legumes. In this Opinion article, a group of proteins that are secreted by rhizobia, some of which have homologues in bacterial pathogens, are used to support the hypothesis that some pathogenic pathways have been co-opted by rhizobia for symbiotic purposes.
- William J. Deakin
- William J. Broughton
