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Effects of Long-Term Non-Pruning on Main Quality Constituents in 'Dancong' Tea (Camellia sinensis) Leaves Based on Proteomics and Metabolomics Analysis

文献类型： 外文期刊

作者： Chen, Yiyong 1 ; Zhou, Bo 1 ; Li, Jianlong 1 ; Tang, Hao 1 ; Zeng, Lanting 3 ; Chen, Qin 5 ; Cui, Yingying 1 ; Liu, Jiayu 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Tea Res Inst, Dafeng Rd 6, Guangzhou 510640, Peoples R China

2.Guangdong Prov Key Lab Tea Plant Resources Innova, Dafeng Rd 6, Guangzhou 510640, Peoples R China

3.Chinese Acad Sci, Key Lab South China Agr Plant Mol Anal & Genet Im, Xingke Rd 723, Guangzhou 510650, Peoples R China

4.Chinese Acad Sci, Guangdong Prov Key Lab Appl Bot, South China Bot Garden, Xingke Rd 723, Guangzhou 510650, Peoples R China

5.Chaozhou Tea Sci Res Ctr, Chaozhou 512000, Peoples R China

关键词： Camellia sinensis; pruning; 'Dancong' tea; quality constitutes; catechins

期刊名称：FOODS （ 影响因子：4.35； 五年影响因子：4.957 ）

ISSN：

年卷期： 2021 年 10 卷 11 期

页码：

收录情况： SCI

摘要： 'Dancong' tea is a famous traditional Oolong tea. In order to keep the original taste of "ancient tea trees ", most of the 'Dancong' tea plants are planted in a single plant pattern without pruning. The objective of this study was to explore the effects of long-term non-pruning on main quality constituents in 'Dancong' tea. The results showed that the contents of free amino acids, chlorophylls, and floral-honey aromatic substances in tea leaves of unpruned tea plants were higher than those in every year pruned tea plants, while the catechin content in leaves of pruned tea plants was higher than that in leaves of unpruned tea plants. Quantitative proteomics analysis showed that most enzymes involved in biosynthesis of catechins were downregulated in leaves of unpruned tea plants. Five proteins involved in chlorophyll metabolism and 12 proteins related to photosynthesis were upregulated, and the results suggested that higher chlorophyll content and more efficient photosynthetic energy conversion may be important for the higher accumulation of special quality components in leaves of unpruned tea plants. The findings of this study will advance our understanding of the mechanism of formation of different metabolites in leaves of unpruned and pruned tea plants.

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