Isolation and Identification of Potential Allelochemicals from Aerial Parts of Avena fatua L. and Their Allelopathic Effect on Wheat

文献类型： 外文期刊

第一作者： Tian, Fajun

作者： Tian, Fajun;Tian, Yingying;Dong, Fengshou;Xu, Jun;Zheng, Yongquan;Tian, Fajun;Wu, Yanbing

作者机构：

关键词： wild oats;wheat;allelopathy;allelochemicals;inhibitory effect;mechanism

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.279； 五年影响因子：5.269 ）

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收录情况： SCI

摘要： Five compounds (syringic acid, tricin, acacetin, syringoside, and diosmetin) were isolated from the aerial parts of wild oats (Avena fatua L.) using chromatography columns of silica gel and Sephadex LH-20. Their chemical structures were identified by means of electrospray ionization and high -resolution mass spectrometry as well as H-1 and C-13 nuclear magnetic resonance spectroscopic analyses. Bioassays showed that the five compounds had significant allelopathic effects on the germination and seedling growth of wheat (Triticum aestivum L.). The five compounds inhibited fresh wheat as well as the shoot and root growth of wheat by approximately 50% at a concentration of 100 mg/kg, except for tricin and syringoside for shoot growth. The results of activity testing indicated that the aerial parts of wild oats had strong allelopathic potential and could cause different degrees of influence on surrounding plants. Moreover, these compounds could be key allelochemicals in wild-oat infested wheat fields and interfere with wheat growth via allelopathy.

分类号： R15`S

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