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Stereoselectivity of paclobutrazol enantiomers to oxidative stress in wheat. 2024

Chao Yang, and Hao Li, and Huajun Liang, and Bo Huang, and Yitao Sun, and Wenlong Yang, and Yilun Wu, and Youhe Cui, and Jiangbo Hai, and Zhoujia Dong
College of Agronomy, Northwest A&F University, Xianyang, Shaanxi Province, People's Republic of China.

Chiral pesticides have the special chiral structures, so enantioselective biological effects are usually observed in living organisms. Current study used paclobutrazol as a case study and explored the enantioselective degradation and oxidative stress effect on wheat. The results demonstrated that the degradation of R-paclobutrazol was faster than S-paclobutrazol significantly and improved the content of MDA and O2 - in wheat plants, which proved that the R-paclobutrazol induced oxidative damage in wheat, showing selective biological effects, and S-paclobutrazol was friendly to wheat. This study provided a theoretical basis for the selective activity of chiral pesticides and the development of chiral pesticide monomers.

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