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Ma H, Liu N, Sun X, Zhu M, Mao T, Huang S, Meng X, Li H, Wang M, Liang H. Establishment of an efficient transformation system and its application in regulatory mechanism analysis of biological macromolecules in tea plants. Int J Biol Macromol 2023:125372. [PMID: 37321436 DOI: 10.1016/j.ijbiomac.2023.125372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/08/2023] [Accepted: 06/11/2023] [Indexed: 06/17/2023]
Abstract
Tea (Camellia sinensis), one of the most important beverage crops originated from China and is now cultivated worldwide, provides numerous secondary metabolites that account for its health benefits and rich flavor. However, the lack of an efficient and reliable genetic transformation system has seriously hindered the gene function investigation and precise breeding of C. sinensis. In this study, we established a highly efficient, labor-saving, and cost-effective Agrobacterium rhizogenes-mediated hairy roots genetic transformation system for C. sinensis, which can be used for gene overexpression and genome editing. The established transformation system was simple to operate, bypassing tissue culture and antibiotic screening, and only took two months to complete. We used this system to conduct function analysis of transcription factor CsMYB73 and found that CsMYB73 negatively regulates L-theanine synthesis in tea plant. Additionally, callus formation was successfully induced using transgenic roots, and the transgenic callus exhibited normal chlorophyll production, enabling the study of the corresponding biological functions. Furthermore, this genetic transformation system was effective for multiple C. sinensis varieties and other woody plant species. By overcoming technical obstacles such as low efficiency, long experimental periods, and high costs, this genetic transformation will be a valuable tool for routine gene investigation and precise breeding in tea plants.
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Affiliation(s)
- Haijie Ma
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China; Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, China.
| | - Ningge Liu
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Xuepeng Sun
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Mengling Zhu
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Tingfeng Mao
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Suya Huang
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Xinyue Meng
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Hangfei Li
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Min Wang
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Huiling Liang
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
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Chen Y, Li Y, Shen C, Xiao L. Topics and trends in fresh tea ( Camellia sinensis) leaf research: A comprehensive bibliometric study. FRONTIERS IN PLANT SCIENCE 2023; 14:1092511. [PMID: 37089662 PMCID: PMC10118041 DOI: 10.3389/fpls.2023.1092511] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 03/23/2023] [Indexed: 05/03/2023]
Abstract
Tea plant (Camellia sinensis) is a widely cultivated cash crop and tea is a favorite functional food in the world. Fresh tea leaves (FTLs) play a critical role in bridging the two fields closely related to tea cultivation and tea processing, those are, tea plant biology and tea biochemistry. To provide a comprehensive overview of the development stages, authorship collaboration, research topics, and hotspots and their temporal evolution trends in the field of FTLs research, we conducted a bibliometric analysis, based on 971 publications on FTLs-related research published during 2001-2021 from Web of Science Core Collection. CiteSpace, R package Bibliometrix, and VOSviewer were employed in this research. The results revealed that the development history can be roughly divided into three stages, namely initial stage, slow development stage and rapid development stage. Journal of Agricultural & Food Chemistry published most articles in this field, while Frontiers in Plant Science held the highest total citations and h-index. The most influential country, institution, and author in this field was identified as China, the Chinese Academy of Agricultural Sciences, and Xiaochun Wan, respectively. FTLs-related research can be categorized into three main topics: the regulation mechanism of key genes, the metabolism and features of essential compounds, and tea plants' growth and stress responses. The most concerning hotspots are the application of advanced technologies, essential metabolites, leaf color variants, and effective cultivation treatments. There has been a shift from basic biochemical and enzymatic studies to studies of molecular mechanisms that depend on multi-omics technologies. We also discussed the future development in this field. This study provides a comprehensive summary of the research field, making it easier for researchers to be informed about its development history, status, and trends.
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Affiliation(s)
- YiQin Chen
- Key Laboratory of Tea Science of Ministry of Education, College of Horticulture, Hunan Agricultural University, Changsha, China
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Changsha, China
- Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Changsha, China
- Key Laboratory for Evaluation and Utilization of Gene Resources of Horticultural Crops, Ministry of Agriculture and Rural Affairs of China, Hunan Agricultural University, Changsha, China
| | - YunFei Li
- Key Laboratory of Tea Science of Ministry of Education, College of Horticulture, Hunan Agricultural University, Changsha, China
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Changsha, China
- Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Changsha, China
- Key Laboratory for Evaluation and Utilization of Gene Resources of Horticultural Crops, Ministry of Agriculture and Rural Affairs of China, Hunan Agricultural University, Changsha, China
| | - ChengWen Shen
- Key Laboratory of Tea Science of Ministry of Education, College of Horticulture, Hunan Agricultural University, Changsha, China
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Changsha, China
- Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Changsha, China
- Key Laboratory for Evaluation and Utilization of Gene Resources of Horticultural Crops, Ministry of Agriculture and Rural Affairs of China, Hunan Agricultural University, Changsha, China
- *Correspondence: Chengwen Shen, ; Lizheng Xiao,
| | - LiZheng Xiao
- Key Laboratory of Tea Science of Ministry of Education, College of Horticulture, Hunan Agricultural University, Changsha, China
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Changsha, China
- Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Changsha, China
- Key Laboratory for Evaluation and Utilization of Gene Resources of Horticultural Crops, Ministry of Agriculture and Rural Affairs of China, Hunan Agricultural University, Changsha, China
- *Correspondence: Chengwen Shen, ; Lizheng Xiao,
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Han Z, Shang X, Shao L, Wang Y, Zhu X, Fang W, Ma Y. Meta-analysis of the effect of expression of MYB transcription factor genes on abiotic stress. PeerJ 2021; 9:e11268. [PMID: 34164229 PMCID: PMC8194419 DOI: 10.7717/peerj.11268] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 03/23/2021] [Indexed: 01/06/2023] Open
Abstract
Background MYB proteins are a large group of transcription factors. The overexpression of MYB genes has been reported to improve abiotic stress tolerance in plant. However, due to the variety of plant species studied and the types of gene donors/recipients, along with different experimental conditions, it is difficult to interpret the roles of MYB in abiotic stress tolerance from published data. Methods Using meta-analysis approach, we investigated the plant characteristics involved in cold, drought, and salt stress in MYB-overexpressing plants and analyzed the degrees of influence on plant performance by experimental variables. Results The results show that two of the four measured plant parameters in cold-stressed plants, two of the six in drought-stressed, and four of the 13 in salt-stressed were significantly impacted by MYB overexpression by 22% or more, and the treatment medium, donor/recipient species, and donor type significantly influence the effects of MYB-overexpression on drought stress tolerance. Also, the donor/recipient species, donor type, and stress duration all significantly affected the extent of MYB-mediated salt stress tolerance. In summary, this study compiles and analyzes the data across studies to help us understand the complex interactions that dictate the efficacy of heterologous MYB expression designed for improved abiotic stress tolerance in plants.
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Affiliation(s)
- Zhaolan Han
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Xiaowen Shang
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Lingxia Shao
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Ya Wang
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Xujun Zhu
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Wanping Fang
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Yuanchun Ma
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, China
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Li W, Xiang F, Su Y, Luo Z, Luo W, Zhou L, Liu H, Xiao L. Gibberellin Increases the Bud Yield and Theanine Accumulation in Camellia sinensis (L.) Kuntze. Molecules 2021; 26:molecules26113290. [PMID: 34072521 PMCID: PMC8198828 DOI: 10.3390/molecules26113290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 05/24/2021] [Accepted: 05/27/2021] [Indexed: 11/29/2022] Open
Abstract
Tea (Camellia sinensis) is one of the most important cash crops in the world. Theanine, as an important amino acid component in tea, is a key quality index for excellent tea quality and high economic value. People increase theanine accumulation in tea mainly through the application of nitrogen fertilizer, shading and pruning. However, these methods are not effective. In this study, we treated tea buds with a 100 μM solution of GA3 containing 1‰ tween-20, investigated the effects of GA3 on theanine accumulation, bud yield, chlorophyll fluorescence parameters and expression level of theanine biosynthesis pathway genes in tea plant by qPCR, LC-MS/MS etc. Results showed that change trends of theanine and GA3 was extremely positively correlated with each other. Exogenous GA3 upregulated the expression level of theanine biosynthesis pathway genes, caused an increase of theanine content (mg·g-1) by 27% in tea leaves compared with Mock, and accelerated the germination of buds and elongation of shoots, which lead to a significant increase of tea yield by 56% (w/w). Moreover, the decrease of chlorophyll contents, photochemical quenching coefficient (qP) and relative electron transport rate (rETR) under GA3 treatment suggested that GA3 reduced photosynthesis in the tender tea leaves, indicating that the decline of carbon assimilation in tea plants was conducive to the nitrogen metabolism, and it was beneficial to the accumulation of theanine. This study provided a new technical and theoretical support for the precise control of tea quality components and phenophase.
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Affiliation(s)
- Wei Li
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha 410125, China; (W.L.); (Y.S.); (Z.L.); (W.L.)
- Tea Research Institute, Hunan Academy of Agricultural Science, Changsha 410125, China; (F.X.); (L.Z.); (H.L.)
| | - Fen Xiang
- Tea Research Institute, Hunan Academy of Agricultural Science, Changsha 410125, China; (F.X.); (L.Z.); (H.L.)
| | - Yi Su
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha 410125, China; (W.L.); (Y.S.); (Z.L.); (W.L.)
| | - Zhoufei Luo
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha 410125, China; (W.L.); (Y.S.); (Z.L.); (W.L.)
| | - Weigui Luo
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha 410125, China; (W.L.); (Y.S.); (Z.L.); (W.L.)
| | - Lingyun Zhou
- Tea Research Institute, Hunan Academy of Agricultural Science, Changsha 410125, China; (F.X.); (L.Z.); (H.L.)
| | - Hongyan Liu
- Tea Research Institute, Hunan Academy of Agricultural Science, Changsha 410125, China; (F.X.); (L.Z.); (H.L.)
| | - Langtao Xiao
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha 410125, China; (W.L.); (Y.S.); (Z.L.); (W.L.)
- Correspondence: ; Tel.: +86-073-184-635-261
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Chen X, Wang P, Gu M, Lin X, Hou B, Zheng Y, Sun Y, Jin S, Ye N. R2R3-MYB transcription factor family in tea plant (Camellia sinensis): Genome-wide characterization, phylogeny, chromosome location, structure and expression patterns. Genomics 2021; 113:1565-1578. [PMID: 33819564 DOI: 10.1016/j.ygeno.2021.03.033] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 03/03/2021] [Accepted: 03/31/2021] [Indexed: 12/27/2022]
Abstract
MYB transcription factors play essential roles in many biological processes and environmental stimuli. However, the functions of the MYB transcription factor family in tea plants have not been elucidated. Here, a total of 122 CsR2R3-MYB genes were identified from the chromosome level genome of tea plant (Camellia sinensis). The CsR2R3-MYB genes were phylogenetically classified into 25 groups. Results from the structure analysis of the gene, conserved motifs, and chromosomal distribution supported the relative conservation of the R2R3-MYB genes family in the tea plant. Synteny analysis indicated that 122, 34, and 112 CsR2R3-MYB genes were orthologous to Arabidopsis thaliana, Oryza sativa and C. sinensis var. 'huangdan' (HD), respectively. Tissue-specific expression showed that all CsR2R3-MYB genes had different expression patterns in the tea plant tissues, indicating that these genes may perform diverse functions. The expression patterns of representative R2R3-MYB genes and the regulatory network of the main anthocyanin components were analyzed, which suggested that CsMYB17 may played a key role in the regulation of cya-3-O-gal, del-3-O-gal, cya-3-O-glu and pel-3-O-glu. Results from the qRT-PCR validation of selected genes suggested that CsR2R3-MYB genes were induced in response to drought, cold, GA, and ABA treatments. Overall, this study provides comprehensive and systematic information for research on the function of R2R3-MYB genes in tea plants.
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Affiliation(s)
- Xuejin Chen
- College of Horticulture, Fujian Agriculture and Forestry University/Key Laboratory of Tea Science in University of Fujian Province, Fuzhou 350002, China
| | - Pengjie Wang
- College of Horticulture, Fujian Agriculture and Forestry University/Key Laboratory of Tea Science in University of Fujian Province, Fuzhou 350002, China
| | - Mengya Gu
- College of Horticulture, Fujian Agriculture and Forestry University/Key Laboratory of Tea Science in University of Fujian Province, Fuzhou 350002, China
| | - Xinying Lin
- College of Horticulture, Fujian Agriculture and Forestry University/Key Laboratory of Tea Science in University of Fujian Province, Fuzhou 350002, China
| | - Binghao Hou
- College of Horticulture, Fujian Agriculture and Forestry University/Key Laboratory of Tea Science in University of Fujian Province, Fuzhou 350002, China
| | - Yucheng Zheng
- College of Horticulture, Fujian Agriculture and Forestry University/Key Laboratory of Tea Science in University of Fujian Province, Fuzhou 350002, China
| | - Yun Sun
- College of Horticulture, Fujian Agriculture and Forestry University/Key Laboratory of Tea Science in University of Fujian Province, Fuzhou 350002, China
| | - Shan Jin
- College of Horticulture, Fujian Agriculture and Forestry University/Key Laboratory of Tea Science in University of Fujian Province, Fuzhou 350002, China.
| | - Naixing Ye
- College of Horticulture, Fujian Agriculture and Forestry University/Key Laboratory of Tea Science in University of Fujian Province, Fuzhou 350002, China.
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