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Chen M, Zhang Y, Wang Y, Cheng P, Zhang Q, Li M, Jia X, Pan Y, Lin S, Luo Z, Wang H, Ye J. Transcriptomic analysis of the effect of shaking and tumbling degree on quality formation of Wuyi rock tea. J Food Sci 2024; 89:81-95. [PMID: 37983847 DOI: 10.1111/1750-3841.16844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 10/25/2023] [Accepted: 10/27/2023] [Indexed: 11/22/2023]
Abstract
Shaking and tumbling are extremely important for the formation of the special flavor of Wuyi rock tea. In this study, we analyzed the effects of different shaking and tumbling degrees on the quality index content of tea leaves and determined changes in gene expression in tea leaves using RNA sequencing technology. On this basis, the correlation between gene expression intensities in tea leaves and tea quality index content was analyzed. The results showed that heavy shaking and tumbling (MW3) increased gene expression of metabolic pathways, biosynthesis of secondary metabolites, starch and sucrose metabolism, biosynthesis of amino acids, glycine, serine, and threonine metabolism, alpha-linolenic acid metabolism pathways and decreased gene expression of flavonoid biosynthesis, carbon fixation in photosynthetic organisms, phenylpropanoid biosynthesis, and plant hormone signal transduction pathways in tea leaves, which in turn increased the content of caffeine, soluble sugar, amino acid and decreased the content of flavone, tea polyphenol, catechin component in tea leaves; the opposite was true for light shaking and tumbling. Second, this study found that MW3 was more beneficial in improving the mellowness, sweetness, and fresh and brisk taste of tea leaves and reducing the bitterness of tea leaves. This study provides some references to guide the processing of Wuyi rock tea with different flavors. PRACTICAL APPLICATION: Heavy shaking and tumbling was more beneficial in improving the mellowness, sweetness, and fresh and brisk taste of tea leaves and reducing the bitterness of tea leaves. Therefore, the degree of shaking and tumbling in Wuyi production can be appropriately improved to produce high-quality tea and improve the economic benefits of tea.
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Affiliation(s)
- Meihui Chen
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Tea and Food, Wuyi University, Wuyishan, China
| | - Ying Zhang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Tea and Food, Wuyi University, Wuyishan, China
| | - Yuhua Wang
- College of JunCao Science and Ecology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Pengyuan Cheng
- College of Life Science, Longyan University, Longyan, China
| | - Qi Zhang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Tea and Food, Wuyi University, Wuyishan, China
| | - Mingzhe Li
- College of Life Science, Longyan University, Longyan, China
| | - Xiaoli Jia
- College of Tea and Food, Wuyi University, Wuyishan, China
| | - Yibin Pan
- College of Tea and Food, Wuyi University, Wuyishan, China
| | - Shaoxiong Lin
- College of Life Science, Longyan University, Longyan, China
| | - Zhengwei Luo
- College of Tea and Food, Wuyi University, Wuyishan, China
| | - Haibin Wang
- College of Tea and Food, Wuyi University, Wuyishan, China
| | - Jianghua Ye
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Tea and Food, Wuyi University, Wuyishan, China
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Zhang Y, Zhang Q, Wang Y, Lin S, Chen M, Cheng P, Wang Y, Du M, Jia X, Wang H, Ye J. Effects of Magnesium on Transcriptome and Physicochemical Index of Tea Leaves. Plants (Basel) 2023; 12:plants12091810. [PMID: 37176867 PMCID: PMC10181054 DOI: 10.3390/plants12091810] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/25/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023]
Abstract
Magnesium (Mg) is one of the essential elements for the growth of tea tree and is extremely important for its development. In this study, we investigated the effect of Mg on the transcriptome and physicochemical indexes of tea leaves, and the results showed that Mg could significantly affect the gene expression of tea leaves. The results of Orthogonal Partial Least-Squares Discriminant Analysis (OPLS-DA) model analysis showed that a total of 300 key genes (Variable Importance for the Projection, VIP > 1) were screened under different concentrations of Mg treatment, among which 140 genes were up-regulated and 160 genes were down-regulated. The bubble map was used to screen the characteristic genes from the above key genes, and a total of 121 representative characteristic genes were obtained, mainly involving 9 metabolic pathways. Among them, gene expression of three metabolic pathways, including porphyrin metabolism, alpha-linolenic acid metabolism and photosynthesis, showed an increasing trend with the increase of Mg concentration, while gene expression of four metabolic pathways, including biosynthesis of secondary metabolites, anthocyanin biosynthesis, ABC transporters, pentose and glucuronate interconversions, showed a decreasing trend. The results of physiological index analysis showed that with the increase of Mg concentration, the photosynthetic physiological index, theanine and soluble sugar content of tea leaves showed an increasing trend, while the content of tea polyphenol, flavone and caffeine showed a decreasing trend. The results of TOPSIS analysis showed that the physiological indexes of tea trees most affected by Mg were chlorophyll, tea polyphenols and flavonoids, while the metabolic pathways most affected by Mg on gene expression were the metabolic pathways and biosynthesis of secondary metabolites. It can be seen that the effects of Mg on tea tree were mainly related to photosynthesis and synthesis of secondary metabolites, and Mg was beneficial for improving the photosynthetic capacity of tea tree, enhancing the accumulation of primary metabolites, and thus increasing tea yield. However, Mg was not conducive to the synthesis of secondary metabolites of tea tree and the accumulation of main quality indexes of tea leaves.
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Affiliation(s)
- Ying Zhang
- College of Tea and Food, Wuyi University, Wuyishan 354300, China
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Qi Zhang
- College of Tea and Food, Wuyi University, Wuyishan 354300, China
| | - Yuhua Wang
- College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Shaoxiong Lin
- College of Life Science, Longyan University, Longyan 364012, China
| | - Meihui Chen
- College of Tea and Food, Wuyi University, Wuyishan 354300, China
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Pengyuan Cheng
- College of Life Science, Longyan University, Longyan 364012, China
| | - Yuchao Wang
- College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Mengru Du
- College of Tea and Food, Wuyi University, Wuyishan 354300, China
| | - Xiaoli Jia
- College of Tea and Food, Wuyi University, Wuyishan 354300, China
| | - Haibin Wang
- College of Tea and Food, Wuyi University, Wuyishan 354300, China
| | - Jianghua Ye
- College of Tea and Food, Wuyi University, Wuyishan 354300, China
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