A large and metabolically diverse phylum of gram-negative bacteria named for the Greek god Proteus for the sheer variety of forms within it. Proteobacteria includes Escherichia coli, Salmonella, and the nitrogen-fixing Rhizobium that partners symbiotically with legume plant roots.
Facts
Disputed
Member Species/Taxa CountApproximate described-species (or, for a genus, described-taxon) count; continually revised as species are newly described, reclassified or synonymized. Taxonomic Rank Scientific Name Connections
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