文献类型：期刊文献

英文题名：Discovery of rosin-based acylhydrazone derivatives as potential antifungal agents against rice Rhizoctonia solani for sustainable crop protection

作者：Xu, Renle[1] Gu, Shihao[1] Chen, Kun[1] Chen, Jinyu[1] Wang, Yong[2] Gao, Yanqing[2] Shang, Shibin[3] Song, Zhanqian[3] Song, Jie[4] Li, Jian[1]

第一作者：Xu, Renle

通信作者：Li, J[1]

机构：[1]Northwest A&F Univ, Coll Forestry, Shaanxi Key Lab Econ Plant Resources Dev & Utiliz, Yangling, Shaanxi, Peoples R China;[2]Northwest A&F Univ, Coll Plant Protect, Dept Agr Pharmacol, Yangling, Shaanxi, Peoples R China;[3]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing, Jiangsu, Peoples R China;[4]Univ Michigan, Dept Chem & Biochem, Flint, MI 48503 USA

年份：0

外文期刊名：PEST MANAGEMENT SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000875727000001)】；

基金：This work was supported by the National Natural Science Foundation of China (grant number 31870555) and the Innovation and Entrepreneurship Training Program for College Students (grant numbers 202110712077).

语种：英文

外文关键词：rosin; acylhydrazone; thiophene ring; antifungal activity; R; solani; action mechanism

摘要：BACKGROUND The use of fungicides to protect crops from diseases is an effective method, and novel environmentally friendly plant-derived fungicides with enhanced performance and low toxicity are urgent requirements for sustainable agriculture. RESULTS Two kinds of rosin-based acylhydrazone compounds were designed and prepared. Based on the antifungal activity assessment against Rhizoctonia solani, Fusarium oxysporum, Phytophthora capsici, Sclerotinia sclerotiorum, and Botrytis cinerea, acylhydrazone derivatives containing a thiophene ring were screened and showed an inhibitory effect on rice R. solani. Among them, Compound 4n, with an electron-withdrawing group on the benzene ring structure attached to the thiophene ring, showed optimal activity, and the EC50 value was 0.981 mg L-1, which was lower than that of carbendazim. Furthermore, it was indicated that 4n could affect the mycelial morphology, cell membrane permeability and microstructure, cause the generation of reactive oxygen species in fungal cells, and damage the nucleus and mitochondrial physiological function, resulting in the cell death of R. solani. Meanwhile, Compound 4n exhibited a better therapeutic effect on in vivo rice plants. However, the induction activity of 4n on the defense enzyme in rice leaf sheaths showed that 4n stimulates the initial resistance of rice plants by removing active oxygen, thereby protecting the cell membrane or enhancing the strength of the cell wall. Through the quantitative structure-activity relationship study, the quantitative chemical and electrostatic descriptors significantly affect the binding of 4n with the receptor, which improves its antifungal activity. CONCLUSION This study provides a basis for exploiting potential rosin-based fungicides in promoting sustainable crop protection. (c) 2022 Society of Chemical Industry.