Phytotoxicity of 4,8-Dihydroxy-1-tetralone Isolated from Carya cathayensis Sarg. to Various Plant Species

Molecules

Xian-Xian Li¹  Min-Feng Yu¹  Xiao Ruan¹  Yu-Zhu Zhang¹  Qiang Wang¹ 

[1] Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China

关键词: Carya cathayensis Sarg.;    phytotoxicity;    4;    8-dihydroxy-1-tetralone;    bioassay;   

DOI  :  10.3390/molecules191015452

来源: mdpi

【 摘 要 】

The aqueous extract from Carya cathayensis Sarg. exocarp was centrifuged, filtered, and separated into 11 elution fractions by X-5 macroporous resin chromatography. A phenolic compound, 4,8-dihydroxy-1-tetralone (4,8-DHT) was isolated from the fractions with the strongest phytotoxicity by bioassy-guided fractionation, and investigated for phytotoxicity on lettuce (Latuca sativa L.), radish (Raphanus sativus L.), cucumber (Cucumis sativus L.), onion (Allium cepa L.) and wheat (Triticum aestivum L.). The testing results showed that the treatment with 0.6 mM 4,8-DHT could significantly depress the germination vigor of lettuce and wheat, reduce the germination rate of lettuce and cucumber, and also inhibit radicle length, plumule length, and fresh weight of seedlings of lettuce and onion, but could significantly promote plumule length and fresh weight of seedlings of cucumber (p < 0.05). For the tested five plants, the 4,8-DHT was the most active to the seed germination and seedling growth of lettuce, indicating that the phytotoxicity of 4,8-DHT had the selectivity of dosage, action target (plant type) and content (seed germination or seedling growth).

【 授权许可】

CC BY   
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