Malvone A, a phytoalexin found in Malva sylvestris (family Malvaceae)
| Autor: | Z. Golubenko, Lorraine S. Puckhaber, Joseph H. Reibenspies, O. N. Veshkurova, V. V. Uzbekov, E. M. Sultanova, E. A. Pshenichnov, Howard J. Williams, Shavkat Salikhov, Irina Arzanova, Robert D. Stipanovic |
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| Rok vydání: | 2006 |
| Předmět: |
Malva sylvestris
Plant Science Horticulture Verticillium Sesquiterpene Gossypium Biochemistry chemistry.chemical_compound Phytoalexins Botany Verticillium dahliae Molecular Biology Malvaceae Plant Diseases chemistry.chemical_classification Malva biology Molecular Structure Terpenes Phytoalexin General Medicine Nuclear magnetic resonance spectroscopy Fungi imperfecti biology.organism_classification chemistry Sesquiterpenes Naphthoquinones |
| Zdroj: | Phytochemistry. 67(21) |
| ISSN: | 0031-9422 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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