"Pseudomonas helianthi" is a Gram-negative plant pathogenic bacterium that infects a variety of plants. It was once considered a pathovar of Pseudomonas syringae, but following DNA-relatedness studies, it was recognized as a separate species and P. syringae pv.
The bacterium "Pseudomonas helianthi" is a Gram-negative plant-infecting pathogen that affects multiple types of plants. It was once classified as a subgroup of Pseudomonas syringae, but subsequent DNA-based research revealed it to be a separate species and sub-group of P. syringae.