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Updated: Mar 29, 2026

Author Spotlight: A New and Efficient Method for Comprehensive Metabolite Cytotoxicity Assessment of Triazole Pesticides in Plants
Published on: December 22, 2023
Triazolyl phenyl disulfides: 8-Amino-7-oxononanoate synthase inhibitors as potential herbicides
Hoh-Gyu Hahn1, Jung-Sup Choi2, Hee Kyung Lim2
1Korea Institute of Science and Technology, 39-1, Wolsong-Gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea.
Abstract:
The chemical validation of a potential herbicide target was investigated with 8-amino-7-oxononanoate synthase (AONS, also known as 7-keto-8-aminopelargonate synthase, KAPAS) and triazolyl phenyl disulfide derivatives in vitro and in vivo. AONS activity was completely inhibited by these synthesized compounds, with an IC50 of 48 to 592μM in vitro. Forty five-day old Arabidopsis thaliana plants were completely killed by representative compound KHG23844 {N-(2-fluorophenyl)-3-(phenyldisulphanyl)-1H-1,2,4-triazole-1-carboxamide} at the application rate of 250gha(-1) of foliar treatment in greenhouse conditions. Foliar application of 1000gha(-1) KHG23844 induced 2.3-fold higher l-alanine accumulation in the treated A. thaliana plants. Foliar supplement of 1mM biotin at 1 and 2days before KHG23844 application effectively recovered the growth inhibition of A. thaliana plant treated with KHG23844. The results strongly suggested that representative compound KHG23844 and its derivatives are potential AONS inhibitors.
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