| Light-regulated melatonin biosynthesis in rice during the senescence process in detached leaves. | |
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MedLine Citation:
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PMID: 22289080 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The effect of light on melatonin biosynthesis was examined in detached rice (Oryza sativa cv. Asahi) leaves during the senescence process. The detached leaves were exposed to senescence treatment either in constant darkness or in constant light, and subjected to HPLC analysis for melatonin and its precursors. Higher melatonin levels were detected in rice leaves under constant light while very low levels were observed in constant darkness. Levels of the melatonin intermediates, tryptamine, serotonin, and N-acetylserotonin significantly decreased in the dark compared to those in the light. Furthermore, relative mRNA levels of melatonin biosynthetic genes and their corresponding proteins decreased accordingly in constant darkness. The most striking difference between constant light and dark was observed in levels of the protein tryptamine 5-hydroxylase. These results suggest that melatonin biosynthesis during senescence is dependent on light signals in rice leaves, contrary to the response found in animals. |
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Authors:
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Yeong Byeon; Sangkyu Park; Young-Soon Kim; Don-Hee Park; Sungbeom Lee; Kyoungwhan Back |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-11 |
Journal Detail:
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Title: Journal of pineal research Volume: - ISSN: 1600-079X ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-31 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8504412 Medline TA: J Pineal Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© 2012 John Wiley & Sons A/S. |
Affiliation:
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Department of Biotechnology, Bioenergy Research Center, Interdisciplinary Program of Bioenergy and Biomaterials, Chonnam National University, Gwangju, South Korea School of Biological Sciences and Technology, Chonnam National University, Gwangju, South Korea. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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