文献类型：期刊文献

英文题名：Discovery of Natural Rosin Derivatives Containing Oxime Ester Moieties as Potential Antifungal Agents to Control Tomato Gray Mold Caused by Botrytis cinerea

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

第一作者：Gao, Yanqing

通信作者：Li, J[1]

机构：[1]Northwest A&F Univ, Coll Plant Protect, Yangling 712100, Shaanxi, Peoples R China;[2]Northwest A&F Univ, Coll Forestry, Yangling 712100, Shaanxi, Peoples R China;[3]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Jiangsu, Peoples R China;[4]Univ Michigan, Dept Chem & Biochem, Flint, MI 48502 USA

年份：2022

卷号：70

期号：18

起止页码：5551-5560

外文期刊名：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000802050800007)】；

基金：We thank the National Natural Science Foundation of China (31870555) for financial support.

语种：英文

外文关键词：rosin oxime ester; Botrytis cinerea; tomato gray mold; antifungal activity; action mechanism

摘要：Inspired by the application of natural products against pathogenic fungi, two series of dehydroabietyl oxime ester derivatives were synthesized using rosin as a raw material. Based on the evaluation and screening of in vitro antifungal activities against Botrytis cinerea (B. cinerea), Sclerotinia sclerotiorum, Valsa mali, Rhizoctonia solani, Fusarium oxysporum, and Alternaria alternata, compound 4f exhibited the best antifungal activity against B. cinerea, and its EC50 was 0.798 mg/L, which was lower than that of the positive control trifloxystrobin (1.112 mg/L). The in vivo antifungal activity results showed that 4f had satisfactory protective and curative effects on tomato. Physiological and biochemical studies showed that the action mechanism of compound 4f against B. cinerea is to change the morphology and the ultrastructure of the mycelium, increase the permeability of the cell membrane, and cause nucleus and mitochondrial dysfunction, thus leading to apoptosis. In addition, qualitative and quantitative structure-activity relationship studies showed that the inductive and conjugative interactions between compound 4f and the target receptor form an electron transfer process, thereby achieving an antifungal effect. These results indicated that compound 4f, which was derived from the natural product rosin, is a novel potential fungicidal candidate against B. cinerea.