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Chemical characteristics are one of the easiest and most convenient ways to classify phytotoxins. This is usually done by examining the chemical structures of the phytotoxins, among other chemical properties. Since chemical structures are easily classified by their biosynthetic pathways, those for phytotoxins can also be done in a similar fashion. For example, phytotoxins from Alternaria and Fusarium pathogens share similar chemical structures [11]. Usually, chemical structures are categorized as polyketides, alkaloids, ribosomal and non‐ribosomal, terpenes producing peptides, and metabolites of mixed biosynthetic origin. Other examples include Stagonospora nodorum and Pyrenophora tritici‐repentis; these are both fungi and are known to produce phytotoxic metabolites that are ribosome‐produced peptides [12].