Pseudomonas coronafaciens is a Gram-negative bacterium that is pathogenic to several plant species. Following ribotypical analysis several pathovars of P. syringae were incorporated into this species.
P. coronafaciens performs quorum sensing by way of acylhomoserine lactone compounds. Cha et al., 1998 and Dumenyo et al., 1998 isolate and characterize some of these.