1. Academic Validation
  2. Azo-incorporating Increases Inhibitory Activity of Succinate Dehydrogenase

Azo-incorporating Increases Inhibitory Activity of Succinate Dehydrogenase

  • J Agric Food Chem. 2021 Nov 17;69(45):13448-13459. doi: 10.1021/acs.jafc.1c05551.
Wen Fu 1 Xinyue Hu 1 Qinglong Yuan 1 Xujuan Sun 1 Zhiping Xu 1 Yang Zhang 1 Jiagao Cheng 1 Yonghao Ye 2 Zhong Li 1 3 Xusheng Shao 1 3
Affiliations

Affiliations

  • 1 Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
  • 2 College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, China.
  • 3 State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China.
Abstract

Diversity of pesticide discovery provided a solution to resistance. Here, we presented a strategy of azo-incorporating to promote the diverse developments of fungicide. A series of novel fungicides were synthesized by incorporating azobenzene derivatives into fluxapyroxad. Much better in vitro fungicidal activity increases for compound 9d were observed compared to the positive control, fluxapyroxad against Botrytis cinerea and Rhizoctonia solani. Compound 9d (IC50 = 0.03 μM) also had a great enzyme-inhibiting activity increase toward Succinate Dehydrogenase in comparison with fluxapyroxad (IC50 = 4.40 μM). A comparatively equivalent biological activity was observed between compounds 8a and 9d. SEM analysis helped us to observe clearly the morphology of the fungi before and after active ingredient delivery. Our results of molecular docking analysis, fluorescence quenching analysis, and enzymatic assays demonstrated that compound 8a and 9d act on SDH. An increase in inhibitory activity could be occurring after incorporation of azobenzene, which provided a new strategy for molecular design in pesticide discovery.

Keywords

activity; azobenzene; fungicide; succinate dehydrogenase.

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