| Incorporation of [1-(13)C]1-deoxy-D-xylulose into isoprenoids of the liverwort Conocephalum conicum. | |
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MedLine Citation:
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PMID: 11830134 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The incorporation of (13)C labeled 1-deoxy-D-xylulose into the monoterpene bornyl acetate, the sesquiterpene cubebanol, and the diterpene phytol has been studied in axenic cultures of the liverwort Conocephalum conicum. Quantitative (13)C NMR spectroscopic analysis of the labeling patterns of the sesquiterpene indicated a possible degradation of 1-deoxy-D-xylulose to acetate and subsequent incorporation via the mevalonic acid pathway. In bornyl acetate, the labeling occurred only in the acetate moiety whereas the isoprene units remained unlabelled. The isoprene units of the diterpene phytol showed incorporation of intact deoxy-D-xylulose. These results indicate the involvement of both IPP biosynthetic pathways and two independently operating compartments/cell types with MEP pathway machinery. One MEP compartment is presumably the plastid where phytol is formed; the second, involved in the build-up of the isoprene part of bornyl acetate, might be located in the oil cells. The acetylation of borneol to bornyl acetate in turn occurs in a cellular compartment that is not involved in the build-up of the isoprene units of borneol. |
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Authors:
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Rolf Thiel; Klaus Peter Adam |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Phytochemistry Volume: 59 ISSN: 0031-9422 ISO Abbreviation: Phytochemistry Publication Date: 2002 Feb |
Date Detail:
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Created Date: 2002-02-06 Completed Date: 2002-05-23 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0151434 Medline TA: Phytochemistry Country: United States |
Other Details:
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Languages: eng Pagination: 269-74 Citation Subset: IM |
Affiliation:
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FR 8.7, Pharmakognosie und Analytische Phytochemie der Universität des Saarlandes, 66041 Saarbrücken, Germany. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Carbon Isotopes Magnetic Resonance Spectroscopy Plants / metabolism* Terpenes / metabolism* Xylulose / analogs & derivatives*, metabolism* |
| Chemical | |
Reg. No./Substance:
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0/Carbon Isotopes; 0/Terpenes; 5962-29-8/Xylulose; 60299-43-6/1-deoxy-2-pentulose |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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