| Literature DB >> 16996095 |
Olga Veshkurova1, Zamira Golubenko, Egor Pshenichnov, Irina Arzanova, Vyacheslav Uzbekov, Elvira Sultanova, Shavkat Salikhov, Howard J Williams, Joseph H Reibenspies, Lorraine S Puckhaber, Robert D Stipanovic.
Abstract
The isolation and structure of a phytoalexin, malvone A (2-methyl-3-methoxy-5,6-dihydroxy-1,4-naphthoquinone) is reported. Malvone A formation is induced in Malva sylvestris L. by the plant pathogen Verticillium dahliae. In a turbimetric assay for toxicity to V. dahliae, it had an ED50 value of 24 microg/ml. The structure of malvone A was determined by MS and NMR spectroscopy, and by X-ray crystallographic analysis. The X-ray analysis showed water molecules were located in channels that run along the a-axis.Entities:
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Year: 2006 PMID： 16996095 DOI： 10.1016/j.phytochem.2006.08.010
Source DB: PubMed Journal: Phytochemistry ISSN： 0031-9422 Impact factor: 4.072