Liu Q, Lu DX, Yan ZQ, Li XZ, Yang XY, Guo HR, Qin B. Allelochemicals in the rizosphere sil of Euphorbia himalayensis. J. Agric. Food Chem., 2014, 62 (34): 8555?8561.

题目：Allelochemicals in the rizosphere sil of Euphorbia himalayensis.

作者：Liu Q, Lu DX, Yan ZQ, Li XZ, Yang XY, Guo HR, Qin B.

影响因子: 3.107

刊物名称: J. Agric. Food Chem.

出版年份: 2014

卷: 62  期:34    页码:  8555?8561

文章摘要 : 

Weed infestation has been known to cause considerable reductions in crop yields thereby hindering sustainable agriculture. Many plants in genus Euphorbia affect neighboring plants and other organisms by releasing chemicals into the environment. In view of the serious threat of weeds to agriculture, the allelochemicals of Euphorbia himalayensis and their allelopathic effects were investigated. The extract of root exudates from rhizosphere soil exhibited allelopathic activities against crops (wheat, rape and lettuce) and grasses (Poa annua, Festuca rubra and red clover). Bioassay-guided fractionation and isolation from root extract of E. himalayensis led to the characterization of two ellagic acid derivatives and a jatrophane diterpene, which observably showed phytotoxic activities against lettuce, F. arundinacea and F. rubra. They were further confirmed by UPLC?MS/MS to have concentrations of 3.6, 3.8 and 8.99 nmol/g in the rhizospere soil, respectively. Bioassay indicated that the combination of the allelochemicals could be selective plant growth regulator in agriculture.