| Lithospermic acid B is more responsive to silver ions (Ag+) than rosmarinic acid in Salvia miltiorrhiza hairy root cultures. | |
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MedLine Citation:
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PMID: 19210264 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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LAB (lithospermic acid B) is a dimer of RA (rosmarinic acid) and has been suggested to be derived from RA, but the detailed biosynthesis process has not yet been identified. The accumulation of RA has been intensively investigated in the plant species of Boraginaceae and Lamiaceae. In the present study, we report that silver ions (Ag+; 15 microM), an abiotic elicitor, did not stimulate RA accumulation but dramatically enhanced LAB from approx. 5.4% to 18.8% of dry weight in Salvia miltiorrhiza hairy root cultures, and the rise in LAB was found to be coincident with the decline of RA content at each time point after treatment. Meanwhile, a profiling analysis of genes and metabolites (intermediates) involved in the RA synthesis pathway was performed; the result indicated that several gene transcripts and metabolite accumulations show temporal changes in abundance consistent with LAB production. Thus a potential (putative) biosynthetic route from RA to LAB was presumed, which was suggested to be significantly activated by Ag+ in S. miltiorrhiza hairy root cultures. Further intermediate monitoring and compound feeding experiments were performed to rank the strength of this hypothesis. Our study, for the first time, provides evidence that RA is a precursor leading to LAB synthesis. |
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Authors:
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Ying Xiao; Shouhong Gao; Peng Di; Junfeng Chen; Wansheng Chen; Lei Zhang |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-10-06 |
Journal Detail:
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Title: Bioscience reports Volume: 30 ISSN: 1573-4935 ISO Abbreviation: Biosci. Rep. Publication Date: 2010 Feb |
Date Detail:
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Created Date: 2009-10-08 Completed Date: 2010-01-21 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8102797 Medline TA: Biosci Rep Country: United States |
Other Details:
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Languages: eng Pagination: 33-40 Citation Subset: IM |
Affiliation:
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Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200003, People's Republic of China. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Benzofurans
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metabolism* Cells, Cultured Cinnamates / metabolism* Depsides / metabolism* Gene Expression Regulation, Plant / physiology Molecular Structure Plant Proteins / genetics, metabolism Plant Roots / cytology, metabolism* Salvia miltiorrhiza / cytology, metabolism* Silver / metabolism, pharmacology Stress, Physiological / drug effects, physiology |
| Chemical | |
Reg. No./Substance:
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0/Benzofurans; 0/Cinnamates; 0/Depsides; 0/Plant Proteins; 121521-90-2/lithospermic acid B; 537-15-5/rosmarinic acid; 7440-22-4/Silver |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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