Pseudomonas tolaasii is one of a complex of Pseudomonas species that acts as the causal agent of bacterial blotch in white button mushrooms (Agaricus bisporus). It is known to produce a toxin, called tolaasin, which is responsible for the brown blotches associated with the disease. It also demonstrates hemolytic activity, causing lysis of erythrocytes. Based on 16S rRNA analysis, P. tolaasii has been placed in the P. fluorescens group.
References
External links Type strain of Pseudomonas tolaasii at BacDive - the Bacterial Diversity Metadatabase