Differential incorporation of 1-deoxy-D-xylulose into (3S)-linalool and geraniol in grape berry exocarp and mesocarp |
| |
Authors: | Luan Fang Wüst Matthias |
| |
Institution: | Institut für Lebensmittelchemie, Biozentrum, Johann Wolfgang Goethe-Universit?t, Marie-Curie-Strasse 9, D-60439, Frankfurt, Germany. |
| |
Abstract: | In vivo feeding experiments with 5,5-(2)H(2)]mevalonic acid lactone (MVL) and 5,5-(2)H(2)]-1-deoxy-D-xylulose (DOX) indicate that the novel mevalonate-independent 1-deoxy- D-xylulose 5-phosphate/2C-methyl- D-erythritol 4-phosphate (DOXP/MEP) pathway is the dominant metabolic route for monoterpene biosynthesis in grape berry exocarp and mesocarp and in grape leaves. The highly uneven distribution of the monoterpene alcohols (3S)-linalool and geraniol between leaves, berry exocarp and berry mesocarp can be attributed to a compartmentation of monoterpene metabolism. In grape berries incorporation of 5,5-(2)H(2)]-DOX into geraniol is mainly restricted to the exocarp, whereas (3S)-linalool biosynthesis can be detected in exocarp as well as in mesocarp tissue. The results demonstrate that grape berries exhibit an autonomic monoterpene biosynthesis via the novel DOXP/MEP route throughout the ripening process. |
| |
Keywords: | Vitis vinifera L Vitaceae Monoterpenes Biosynthesis d-xylulose" target="_blank">1-Deoxy-d-xylulose Mevalonic acid |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|