Transcriptomic Analysis of the Effect of Pruning on Growth, Quality, and Yield of Wuyi Rock Tea
Author:
Zhang Qi1, Zhang Ying1, Wang Yuhua2, Zou Jishuang2, Lin Shaoxiong3, Chen Meihui1, Miao Pengyao1, Jia Xiaoli1ORCID, Cheng Pengyuan3, Pang Xiaomin1, Ye Jianghua1ORCID, Wang Haibin1
Affiliation:
1. College of Tea and Food, Wuyi University, Wuyishan 354300, China 2. College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China 3. College of Life Science, Longyan University, Longyan 364012, China
Abstract
Pruning is an important agronomic measure in tea plantation management. In this study, we analyzed the effect of pruning on gene expression in tea leaves from a transcriptomics perspective and verified the results of a transcriptomic analysis in terms of changes in physiological indicators of tea leaves. The results showed that pruning enhanced the gene expression of nine metabolic pathways in tea leaves, including fatty acid synthesis and carbohydrate metabolism, nitrogen metabolism, protein processing in the endoplasmic reticulum, and plant hormone signal transduction, thereby promoting the growth of tea plants and increasing tea yield. However, pruning reduced the gene expression of nine metabolic pathways, including secondary metabolites biosynthesis, flavonoid biosynthesis, phenylpropanoid biosynthesis, and sesquiterpenoid and triterpenoid biosynthesis, and lowered the content of caffeine, flavonoids, and free amino acids in tea plant leaves. In conclusion, pruning could promote the growth of tea plants and increase the yield of tea, but it was not conducive to the accumulation of some quality indicators in tea leaves, especially caffeine, flavonoids, and free amino acids, which, in turn, reduced the quality of tea. This study provides an important theoretical reference for the management of agronomic measures in tea plantations.
Funder
the National 948 project Natural Science Foundation of Fujian Province Fujian Outstanding Research Talent Cultivation Project, National Program for Innovation and Entrepreneurship Training of Students Social Science Research Project of Fujian Provincial Education Department Nanping City Science and Technology Plan Project Wuyi University Science and Technology Innovation Development Fund Faculty and students co-creation team of Wuyi University Youth Top Talent Training Program of Longyan University Ecology first-class discipline construction Project of Fujian Agriculture and Forestry University
Subject
Plant Science,Ecology,Ecology, Evolution, Behavior and Systematics
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