《农业科学与工程前沿（英文）》
>> 2016年
第3卷
第2期
doi:
10.15302/J-FASE-2016096
RESEARCH ARTICLE
Expression profiles of genes and enzymes related to ascorbic acid metabolism in fruits of
. Research Center of Chinese Jujube, Agricultural University of Hebei, Baoding 071001, China.. College of Life Science, Agricultural University of Hebei, Baoding 071000, China
录用日期：
2016-05-10
发布日期：
2016-07-05
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摘要
The fruit of Chinese jujube ( ) possesses extremely high concentrations of ascorbic acid (AsA). The accumulation of AsA, the expression patterns of the nine genes related to AsA metabolism as well as the activities of five enzymes involved in AsA synthesis, oxidation and recycling were investigated during fruit development in Mill. ‘Jinsixiaozao’. The results showed that the high level of AsA accumulation in jujube fruit is due to a contribution from both AsA biosynthesis and AsA recycling. It is suggested that L-galactono-1,4-lactone dehydrogenase, ascorbate peroxidase and monodehydro-ascorbate reductase are the crucial genes/enzymes of jujube AsA synthesis, oxidization and recycling, respectively. These results provide useful new insights into the regulatory mechanisms of AsA accumulation in Chinese jujube.
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