Metabolism of Gallic Acid and Its Distributions in Tea ( Camellia sinensis ) Plants at the Tissue and Subcellular Levels

In tea ( ) plants, polyphenols are the representative metabolites and play important roles during their growth. Among tea polyphenols, catechins are extensively studied, while very little attention has been paid to other polyphenols such as gallic acid (GA) that occur in tea leaves with relatively h...

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Published in:International journal of molecular sciences 2020-08, Vol.21 (16), p.5684
Main Authors: Zhou, Xiaochen, Zeng, Lanting, Chen, Yingjuan, Wang, Xuewen, Liao, Yinyin, Xiao, Yangyang, Fu, Xiumin, Yang, Ziyin
Format: Article
Language:English
Subjects:
Acids
Antifungal activity
Antifungal Agents - pharmacology
Biosynthesis
Camellia sinensis
Camellia sinensis - chemistry
Camellia sinensis - microbiology
Catechin
Chromatography
Colletotrichum camelliae
Cultivars
Enzymes
Fractionation
Fungicides
Gallic acid
Gallic Acid - analogs & derivatives
Gallic Acid - chemistry
Gallic Acid - metabolism
Genes
Leaves
Mass spectrometry
Metabolism
Metabolites
methyl gallate
Organ Specificity
Plant Leaves - chemistry
Plucking
Polyphenols
Pseudopestalotiopsis camelliae-sinensis
Quality
Scientific imaging
Signal transduction
spatial distribution
Studies
Subcellular Fractions - metabolism
subcellular location
Tea
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Summary:In tea ( ) plants, polyphenols are the representative metabolites and play important roles during their growth. Among tea polyphenols, catechins are extensively studied, while very little attention has been paid to other polyphenols such as gallic acid (GA) that occur in tea leaves with relatively high content. In this study, GA was able to be transformed into methyl gallate (MG), suggesting that GA is not only a precursor of catechins, but also can be transformed into other metabolites in tea plants. GA content in tea leaves was higher than MG content-regardless of the cultivar, plucking month or leaf position. These two metabolites occurred with higher amounts in tender leaves. Using nonaqueous fractionation techniques, it was found that GA and MG were abundantly accumulated in peroxisome. In addition, GA and MG were found to have strong antifungal activity against two main tea plant diseases, and . The information will advance our understanding on formation and biologic functions of polyphenols in tea plants and also provide a good reference for studying in vivo occurrence of specialized metabolites in economic plants.
ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms21165684