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Herbicidal activities of compounds isolated from the medicinal plant Piper sarmentosum

文献类型： 外文期刊

作者： Feng, Gang 1 ; Chen, Min 1 ; Ye, Huo-Chun 1 ; Zhang, Zheng-Ke 4 ; Li, Hong 1 ; Chen, Li-Liang 1 ; Chen, Xiao-Ling 1 ; Yan 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Haikou 571101, Hainan, Peoples R China

2.Minist Agr, Key Lab Monitoring & Control Trop Agr & Forest In, Haikou 571101, Hainan, Peoples R China

3.Hainan Univ, Coll Environm & Plant Protect, Haikou 570228, Hainan, Peoples R China

4.Hainan Univ, Coll Food Sci & Technol, Haikou 570228, Hainan, Peoples R China

5.China Tobacco, Cigar Res Inst, Haikou 571100, Hainan, Peoples R China

关键词： Piper sarmentosum; Sarmentosine; Sarmentine; Herbicidal activity

期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：5.645； 五年影响因子：5.749 ）

ISSN： 0926-6690

年卷期： 2019 年 132 卷

页码：

收录情况： SCI

摘要： The discovery of novel natural herbicides is crucial to address increased weed resistance and environmental issues. In our previous screening for naturally occurring plant-derived herbicides, the ethanol extract of Piper sarmentosum leaves and stems possessed herbicidal activity against Echinochloa crusgalli and Amaranthus retrofiexus. Here, four known compounds were isolated from the extracts by bioassay-guided fractionation. They were characterized as sarmentosine, sarmentine, piperine and pellitorine based on their spectral data. Phytotoxic analyses revealed that sarmentosine and sarmentine were more phytotoxic against E. crusgalli and A. retroftexus, inhibiting the shoot and root growth process in a concentration-dependent manner. The greenhouse herbicidal activity assay showed that sarmentine and sarmentosine could effectively control E. crusgalli and A. retroflex us at 5-mg/mL concentrations, resulting in inhibition rates of more than 80%. The weed-controlling spectrum test indicated that sarmentosine could effectively control barnyard grass (E. crusgalli), feather fingergrass (Chloris virgata), morning glory (Pharbitis nil), redroot pigweed (A. retroftexus) and Chinese jute (Abutilon theophrasti). In particular, sarmentosine exhibited synergistic effects against E. crusgalli and A. retroflex-us when it was applied in combination with propanil (a commercial herbicide). This is the first report of the herbicidal activity of the natural amine alkaloid sarmentosine and its synergistic effects. These findings warrant further investigations of P. sarmentosum to produce amine alkaloid-based weed control agents.

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