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Secondary Metabolites from Aspergillus sparsus NBERC_28952 and Their Herbicidal Activities

文献类型： 外文期刊

作者： Wu, Zhaoyuan 1 ; Liu, Fang 1 ; Ke, Shaoyong 1 ; Zhang, Zhigang 1 ; Hu, Hongtao 1 ; Fang, Wei 1 ; Xiao, Shaoyujia 2 ; Zhang, Yani 1 ; Wang, Yueying 1 ; Wang, Kaimei 1 ;

作者机构： 1.Hubei Acad Agr Sci, Hubei Biopesticide Engn Res Ctr, Wuhan 430064, Peoples R China

2.Wuhan Univ Sci & Technol, Med Coll, Dept Pharm, Wuhan 430065, Peoples R China

关键词： Aspergillus; Aspergillus sparsus NBERC_28952; Aspersparins; sydonic acid; herbicidal activities; Echinochloa crusgalli; Amaranthus retroflexus

期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）

ISSN：

年卷期： 2023 年 12 卷 1 期

页码：

收录情况： SCI

摘要： Fungi have been used in the production of a wide range of biologically active metabolites, including potent herbicides. In the search for pesticides of natural origin, Aspergillus sparsus NBERC_28952, a fungal strain with herbicidal activity, was obtained. Chemical study of secondary metabolites from NBERC_28952 resulted in the isolation of three new asperugin analogues, named Aspersparin A-C (2-4), and a new azaphilone derivative, named Aspersparin D (5), together with two known compounds, Asperugin B (1) and sydonic acid (6). The structures of these compounds were elucidated based on extensive spectroscopic data and single-crystal X-ray diffraction analysis. All of the isolated compounds were evaluated for their herbicidal activities on seedlings of Echinochloa crusgalli and Amaranthus retroflexus through Petri dish bioassays. Among them, compounds 5 and 6 exhibited moderate inhibitory activities against the growth of the roots and shoots of E. crusgalli seedlings in a dose-dependent manner, while 6 showed obvious inhibitory effect on seedlings of A. retroflexus, with an inhibitory rate of 78.34% at a concentration of 200 mu g/mL. These herbicidal metabolites represent a new source of compounds to control weeds.

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