strain P6-12 Valverde P6-12[2] Herbaspirillum lusitanum is a nitrogen-fixing bacterium found in root nodules of common beans (Phaseolus vulgaris).

[3] Phylogenetic analyses have shown this bacterium belongs to the genus Herbaspirillum.

[3] H. lusitanum lacks the nif gene.

The lack of nif and nod genes suggests H. lusitanum is an opportunistic bacterium capable of colonizing root nodules, but is unable to fix nitrogen.

This Betaproteobacteria-related article is a stub.