| Phenylalanine derived cyanogenic diglucosides from Eucalyptus camphora and their abundances in relation to ontogeny and tissue type. | |
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MedLine Citation:
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PMID: 21945721 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The cyanogenic glucoside profile of Eucalyptus camphora was investigated in the course of plant ontogeny. In addition to amygdalin, three phenylalanine-derived cyanogenic diglucosides characterized by unique linkage positions between the two glucose moieties were identified in E. camphora tissues. This is the first time that multiple cyanogenic diglucosides have been shown to co-occur in any plant species. Two of these cyanogenic glucosides have not previously been reported and are named eucalyptosin B and eucalyptosin C. Quantitative and qualitative differences in total cyanogenic glucoside content were observed across different stages of whole plant and tissue ontogeny, as well as within different tissue types. Seedlings of E. camphora produce only the cyanogenic monoglucoside prunasin, and genetically based variation was observed in the age at which seedlings initiate prunasin biosynthesis. Once initiated, total cyanogenic glucoside concentration increased throughout plant ontogeny with cyanogenic diglucoside production initiated in saplings and reaching a maximum in flower buds of adult trees. The role of multiple cyanogenic glucosides in E. camphora is unknown, but may include enhanced plant defense and/or a primary role in nitrogen storage and transport. |
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Authors:
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Elizabeth H Neilson; Jason Q D Goodger; Mohammed Saddik Motawia; Nanna Bjarnholt; Tina Frisch; Carl Erik Olsen; Birger Lindberg Møller; Ian E Woodrow |
Publication Detail:
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Type: - Date: 2011-9-24 |
Journal Detail:
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Title: Phytochemistry Volume: - ISSN: 1873-3700 ISO Abbreviation: - Publication Date: 2011 Sep |
Date Detail:
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Created Date: 2011-9-27 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0151434 Medline TA: Phytochemistry Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier Ltd. All rights reserved. |
Affiliation:
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School of Botany, The University of Melbourne, Victoria 3010, Australia. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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