Pseudomonas protegens Pf-5 causes discoloration and pitting of mushroom caps due to the production of antifungal metabolites.
Henkels MD, Kidarsa TA, Shaffer BT, Goebel NC, Burlinson P, Mavrodi DV, Bentley MA, Rangel LI, Davis EW, Thomashow LS, Zabriskie TM, Preston GM, Loper JE. Pseudomonas protegens Pf-5 causes discoloration and pitting of mushroom caps due to the production of antifungal metabolites. Mol Plant Microbe Interact. 2014 Jul; 27(7):733-46.