Phytotoxins can be classified based on their source and how they target plants:
: Affect a broad range of plant species. phytotoxin
: Secreted by fungi or bacteria to damage plant tissue, often resulting in symptoms like wilting, chlorosis (yellowing), or necrosis (tissue death). Host-Specific (HST) : Affect only specific plant genotypes. Phytotoxins can be classified based on their source