Authors : Nian Fuzhao and Zhao Leifeng
Abstract: Flavonoids have significant health benefits for animals and humans. Flavonoid 3'-hydroxylase gene have been characterized to be required for flavonoid biosynthesis. In present experiment, the complete mRNA sequence of tobacco flavonoid 3'-hydroxylase gene was amplified using the rapid amplification of cDNA ends methods. The full-length tobacco flavonoid 3'-hydroxylase gene mRNA was 1828 bp containing an 1578 bp open reading frame which encodes a protein of 515 amino acids. Sequence analysis revealed that the flavonoid 3'-hydroxylase genes are conserved in plants. Results also showed that tobacco flavonoid 3'-hydroxylase gene has a closer genetic relationship with the flavonoid 3'-hydroxylase gene of Lycopersicon esculentum. Prediction of transmembrane helices showed that tobacco flavonoid 3'-hydroxylase might be a transmembrane protein. The expression profile was studied and the results indicated that tobacco flavonoid 3'-hydroxylase gene was highly expressed in in leaf and flower. These results established the primary foundation of utilization of tobacco flavonoids in the future.
Nian Fuzhao and Zhao Leifeng, 2013. Molecular Characterization and Expression Pattern of a Novel Flavonoid 3'-Hydroxylase Gene. Journal of Animal and Veterinary Advances, 12: 1352-1356.