Integrated transcriptomic and phytochemical analyses provide insights into characteristic metabolites variation in leaves of 1-year-old grafted tea (Camellia sinensis)
文献类型： 外文期刊
作者： Han, Jieyun 1 ; Lu, Mengqian 1 ; Zhu, Biying 1 ; Wang, Rangjian 2 ; Wan, Xiaochun 1 ; Deng, Wei-Wei 1 ; Zhang, Zheng-Z 1 ;
作者机构： 1.Anhui Agr Univ, State Key Lab Tea Plant Biol & Utilizat, 130 Changjiang West Rd, Hefei 230036, Anhui, Peoples R China
2.Fujian Acad Agr Sci, Tea Res Inst, Fuan 355015, Fujian, Peoples R China
关键词： Camellia sinensis; One-year-old grafting; Characteristic metabolite; Differentially expressed genes; Transcriptome
期刊名称：TREE GENETICS & GENOMES （ 影响因子：2.297； 五年影响因子：2.547 ）
ISSN： 1614-2942
年卷期： 2019 年 15 卷 4 期
页码：
收录情况： SCI
摘要： Tea is a natural nonalcoholic beverage consumed worldwide. And grafting technique has been widely used to improve tea quality and quantity. Camellia sinensis cv. Xianghongdian 1 is an excellent variety of Lu'an guapian tea in China, because of its clones, early sprouting, high yielding, superior quality, and strong stress resistance characters. In this study, we grafted shoots from Xianghongdian 1 onto the rootstocks of low-yielding indigenous tea plants cv. Qimenzhong to improve their varietal characteristics. In order to investigate the variations of metabolites and transcription patterns in the grafted tea plants, the leaves were collected from 1-year-old grafted tea plants, whereas the leaves from scions and rootstocks were served as controls. The metabolic profiles and the gene expression patterns in the target pathways were determined and correlated. The contents of caffeine and total catechins were both higher in the grafting leaf compared with those in scion leaf and rootstock leaf, while the total free amino acid content was lower. All these metabolic changes were correlated to the variations in the transcripts expression patterns. It indicated a feasibility of enhancing the agronomic and economic traits in the short-term grafting tea plants through asexual propagation. And the long-term effects should undergo further investigation
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