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Molecules 2014, 19(10), 15452-15467; doi:10.3390/molecules191015452

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

Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China
Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
Author to whom correspondence should be addressed.
Received: 19 August 2014 / Revised: 15 September 2014 / Accepted: 16 September 2014 / Published: 26 September 2014
(This article belongs to the Section Natural Products)
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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). View Full-Text
Keywords: Carya cathayensis Sarg.; phytotoxicity; 4,8-dihydroxy-1-tetralone; bioassay Carya cathayensis Sarg.; phytotoxicity; 4,8-dihydroxy-1-tetralone; bioassay

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Li, X.-X.; Yu, M.-F.; Ruan, X.; Zhang, Y.-Z.; Wang, Q. Phytotoxicity of 4,8-Dihydroxy-1-tetralone Isolated from Carya cathayensis Sarg. to Various Plant Species. Molecules 2014, 19, 15452-15467.

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