Metabolism of 2‐aminobenzimidazole and benzimidazole in melon plants

摘要

AbstractMelon plants grown in a liquid nutrient solution were separately treated either with benomyl, 2‐aminobenzimidazole (2‐AB), or benzimidazole (BZ), and after 60 days each compound had decomposed into significant concentrations of metabolites, those from 2‐AB and BZ corresponding to the metabolites from benomyl. This supported the following postulated metabolic pathway for benomyl in melon plants: benomyl → carbendazim → 2‐AB→BZInvolvement of the other identified metabolites of benomyl (2‐aminobenzonitrile, o‐phenylenediamine, aniline, and the conjugates of carbendazim and 2‐AB) cannot be proposed unequivocally. In the extracts from plants treated with 2‐AB or BZ, new and unidentified metabolites have also been observed using gas‐liquid