Pisum sativum pathogen

After this, we demonstrated the ability of wheat anionic POs to bind to the chitin of the cell walls of fungal pathogens. We called these POs "chitin-binding POs" (Maksimov et al., 2003). We were the first to demonstrate the binding of the anionic PO of wheat root to chitin (Maksimov et al., 1994). Besides this, we observed that in some species the activity of POs was increased in the unbound Armoracia rustkana, Lagenaria siceraria) or eluted Pisum sativum, Galega orientalis, Brassica oleraceae) fractions of proteins after interaction with chitin. 

Wu, Q. and VanEtten, H.D., Introduction of plant and fungal genes into pea (Pisum sativum L.) hairy roots reduces their ability to produce pisatin and affects their response to a fungal pathogen. Mol Plant Microbe Interact., 17, 798, 2004. 

Pisatin (6.23) is an isoflavonoid phytoalexin that is synthesized by pea (Pisum sativum L.) as a response to infection (Preisig et al., 1989). Subsequently, it was shown that pathogens capable of demethylating pisatin were tolerant of this phytoalexin. The enzyme responsible for demethylation is a specific cytochrome P450 mono-oxygenase released by the fungus Nectria haematococca (Delserone et al., 1999). 

---