Journal
FOOD CHEMISTRY
Volume 347, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2021.129005
Keywords
Jujube leaf; Metabolome; Transcriptome; Leaf color; Flavonoid biosynthesis
Funding
- Natural Science Foundation of Henan province [162300410198]
- Key Science and Technology Program of Henan Province [192102110058]
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This study conducted a comprehensive analysis of metabolites in jujube leaves, revealing the key role of flavonoids in leaf coloration, and found that light significantly influenced the accumulation of flavonoids.
Jujube leaf is well known for its high nutritional value and medicinal benefits. However, a thorough and dynamic assessment of the metabolites present in jujube leaves is lacking. Here, the primary and secondary metabolites from purple leaf buds and green mature leaves were investigated using ultra-high-performance liquid chromatography/tandem mass spectrometry. A total of 778 metabolites were characterized and more than 700 compounds were reported for the first time. Analysis of differentially accumulated metabolites showed that the flavonoids were the major differential metabolites and determined the leaf coloration. The transcriptome data indicated that 20 flavonoid structural genes and three main types of flavonoid regulatory genes were significantly differentially expressed. Moreover, light had a significant influence on flavonoid accumulation. These results improve our understanding of metabolite accumulation and the molecular mechanisms of flavonoid biosynthesis in jujube leaf.
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