LC-MS/MS-Guided Discovery of Herbicidal Himeic Acid Derivatives from the Nicotiana tabacum-Derived Fungus Aspergillus japonicus 334
文献类型： 外文期刊
作者： Dong, Chen 1 ; Wang, Haisu 2 ; Xu, Kuo 1 ; Gu, Gan 2 ; Zhang, Peng 2 ;
作者机构： 1.Shandong Univ Tradit Chinese Med, Res Inst Marine Tradit Chinese Med, Qingdao Acad Chinese Med Sci,SATCMs Key Unit Disco, Key Lab Marine Tradit Chinese Med Shandong Univ, Jinan 250355, Peoples R China
2.Chinese Acad Agr Sci, Tobacco Res Inst, Qingdao 266101, Peoples R China
关键词：
endophytic fungus;
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.2； 五年影响因子：6.4 ）
ISSN： 0021-8561
年卷期： 2025 年 73 卷 34 期
页码：
收录情况： SCI
摘要： Fungal secondary metabolism yields bioactive metabolites with agricultural potential. In the search for herbicidal lead compounds, nine novel himeic acid derivatives, namely, japonimeic acids A-I (1-9), and three known analogs (10-12) were obtained from the fungus Aspergillus japonicus 334 with the assistance of a molecular networking method. The structures were assigned through spectroscopic analyses and optical rotation comparisons. Compound 1 possessed an unprecedented (N-methyl)-benzene-1,4-diol-substituted unit, representing the first such himeic acid analog. All compounds were evaluated for herbicidal activities against Eleusine indica and Amaranthus retroflexus seed germination and radicle elongation. Significantly, compound 7 strongly inhibited the germination of E. indica (IC50 = 211.3 mu M) and A. retroflexus (IC50 = 54.3 mu M), with IC50 values that were higher than those of the positive control glyphosate (603.6 mu M for E. indica and 649.1 mu M for A. retroflexus). Structure-activity analysis was performed. This study provided promising natural herbicide templates and expanded the agricultural potential of himeic acid derivatives.
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