Enhancement of Carotenoid Biosynthesis in Transplastomic Tomatoes by Induced Lycopene-to-Provitamin A Conversion
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چکیده
منابع مشابه
Enhancement of carotenoid biosynthesis in transplastomic tomatoes by induced lycopene-to-provitamin A conversion.
Carotenoids are essential pigments of the photosynthetic apparatus and an indispensable component of the human diet. In addition to being potent antioxidants, they also provide the vitamin A precursor beta-carotene. In tomato (Solanum lycopersicum) fruits, carotenoids accumulate in specialized plastids, the chromoplasts. How the carotenoid biosynthetic pathway is regulated and what limits total...
متن کاملTwo carotenoid oxygenases contribute to mammalian provitamin A metabolism.
Mammalian genomes encode two provitamin A-converting enzymes as follows: the β-carotene-15,15'-oxygenase (BCO1) and the β-carotene-9',10'-oxygenase (BCO2). Symmetric cleavage by BCO1 yields retinoids (β-15'-apocarotenoids, C20), whereas eccentric cleavage by BCO2 produces long-chain (>C20) apocarotenoids. Here, we used genetic and biochemical approaches to clarify the contribution of these enzy...
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Introduction There is consistent evidence that consumption of tomatoes and tomato products may reduce the risk of developing prostate cancer, especially advanced and aggressive prostate cancer [1]. Even after diagnosis of prostate cancer, consumption of tomatoes and tomato products may reduce the risk of prostate cancer recurrence, progression and death [2]. The protective effects of tomatoes a...
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For elucidating the regulatory mechanism of ethylene on carotenoid-related volatiles (open chain) compounds and the relationship between lycopene and carotenoid-related volatiles, transgenic tomato fruits in which ACC synthase was suppressed were used. The transgenic tomato fruit showed a significant reduction of lycopene and aroma volatiles with low ethylene production. 6-Methyl-5-hepten-2-one...
متن کاملThe Carotenoid and Provitamin a Content of the Watermelon
10 years ago lycopene, C40H56, and carotene, &,HS6, were isolated from the pulp of the European watermelon (Citrullus vulgaris, Schrad. = Cucumis citrullus, L.) by Zechmeister and Tuzson (l), and it was shown that the chief pigment, lycopene, is responsible for t.he red color. As the chromatographic method was not available at that time, no precise information as to the composition of the pigme...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 2009
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.109.140533