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タイトル: Functional characterization of a carotenoid cleavage dioxygenase 1 and its relation to the carotenoid accumulation and volatile emission during the floral development of Osmanthus fragrans Lour
著者: Baldermann, Susanne
Kato, Masaya
Kurosawa, Miwako
Kurobayashi, Yoshiko
Fujita, Akira
Fleischmann, Peter
Watanabe, Naoharu
掲載誌名: Journal of experimental botany
出版者: Oxford University Press
巻: 61
号: 11
開始ページ: 2967
終了ページ: 2977
出版日付: 2010-05-17
権利: This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Journal of Experimental Botany following peer review. The definitive publisher-authenticated version Susanne Baldermann, Masaya Kato, Miwako Kurosawa, Yoshiko Kurobayashi, Akira Fujita, Peter Fleischmann, and Naoharu Watanabe Functional characterization of a carotenoid cleavage dioxygenase 1 and its relation to the carotenoid accumulation and volatile emission during the floral development of Osmanthus fragrans Lour. J. Exp. Bot. 2010 61: 2967-2977. is available online at: http://jxb.oxfordjournals.org/content/61/11/2967.
NDC: 471
抄録: Carotenoids are the precursors of important fragrance compounds in flowers of Osmanthus fragrans Lour. var. aurantiacus, which exhibit the highest diversity of carotenoid-derived volatiles among the flowering plants investigated. A cDNA encoding a carotenoid cleavage enzyme, OfCCD1, was identified from transcripts isolated from flowers of O. fragrans Lour. It is shown that the recombinant enzymes cleave carotenes to produce alpha-ionone and beta-ionone in in vitro assays. It was also found that carotenoid content, volatile emissions, and OfCCD1 transcript levels are subjected to photorhythmic changes and principally increased during daylight hours. At the times when OfCCD1 transcript levels reached their maxima, the carotenoid content remained low or slightly decreased. The emission of ionones was also higher during the day; however, emissions decreased at a lower rate than the transcript levels. Moreover, carotenoid content increased from the first to the second day, whereas the volatile release decreased, and the OfCCD1 transcript levels displayed steady-state oscillations, suggesting that the substrate availability in the cellular compartments is changing or other regulatory factors are involved in volatile norisoprenoid formation. Furthermore, the sensory evaluation of the aroma of the model mixtures suggests that the proportionally higher contribution of alpha-ionone and beta-ionone to total volatile emissions in the evening is probably the reason for the increased perception by humans of the scent emission of Osmanthus flowers.
ISSN: 00220957 OPAC
E-ISSN: 14602431 OPAC
出版者DOI: 10.1093/jxb/erq123   
PMID: 20478967
NII書誌ID: AA00697526 OPAC ciniib
バージョン: author
出現コレクション:06. 雑誌論文・記事(Journal Article, Article, Preprint)

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Others By: Baldermann, Susanne (スザンヌ, バルダーマン) (スザンヌ, バルダーマン) (Susanne, Baldermann) -- Kato, Masaya (加藤, 雅也) (カトウ, マサヤ) -- Kurosawa, Miwako -- Kurobayashi, Yoshiko -- Fujita, Akira -- Fleischmann, Peter -- Watanabe, Naoharu (渡邉, 修治) (ワタナベ, ナオハル)

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