A treasure reservoir of genetic resource of tea plant (Camellia sinensis) in Dayao Mountain

Jiang, Chenkai; Zhao, Wenxia; Zeng, Zhen; Lai, Xin; Wu, Chunli; Yuan, Sisi; Huang, Yahui; Zhang, Xu

doi:10.1007/s10722-017-0524-2

Cited by 8 publications

(2 citation statements)

References 20 publications

(18 reference statements)

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“…As revealed by these studies, current tea populations evolved from a single species in the Yunnan-Guizhou (Yun-Gui) Plateau. However, the tea populations used in these previous studies had either small sample size or narrow geographic distribution-including only 14 tea-producing regions in Yunan [17], Guangxi [18] or across China.…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity, linkage disequilibrium, and population structure analysis of the tea plant (Camellia sinensis) from an origin center, Guizhou plateau, using genome-wide SNPs developed by genotyping-by-sequencing

et al. 2019

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Background To efficiently protect and exploit germplasm resources for marker development and breeding purposes, we must accurately depict the features of the tea populations. This study focuses on the Camellia sinensis ( C. sinensis ) population and aims to (i) identify single nucleotide polymorphisms (SNPs) on the genome level, (ii) investigate the genetic diversity and population structure, and (iii) characterize the linkage disequilibrium (LD) pattern to facilitate next genome-wide association mapping and marker-assisted selection. Results We collected 415 tea accessions from the Origin Center and analyzed the genetic diversity, population structure and LD pattern using the genotyping-by-sequencing (GBS) approach. A total of 79,016 high-quality SNPs were identified; the polymorphism information content (PIC) and genetic diversity (GD) based on these SNPs showed a higher level of genetic diversity in cultivated type than in wild type. The 415 accessions were clustered into three groups by STRUCTURE software and confirmed using principal component analyses (PCA)—wild type, cultivated type, and admixed wild type. However, unweighted pair group method with arithmetic mean (UPGMA) trees indicated the accessions should be grouped into more clusters. Further analyses identified four groups, the Pure Wild Type, Admixed Wild Type, ancient landraces and modern landraces using STRUCTURE, and the results were confirmed by PCA and UPGMA tree method. A higher level of genetic diversity was detected in ancient landraces and Admixed Wild Type than that in the Pure Wild Type and modern landraces. The highest differentiation was between the Pure Wild Type and modern landraces. A relatively fast LD decay with a short range (kb) was observed, and the LD decays of four inferred populations were different. Conclusions This study is, to our knowledge, the first population genetic analysis of tea germplasm from the Origin Center, Guizhou Plateau, using GBS. The LD pattern, population structure and genetic differentiation of the tea population revealed by our study will benefit further genetic studies, germplasm protection, and breeding. Electronic supplementary material The online version of this article (10.1186/s12870-019-1917-5) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Genetic diversity, linkage disequilibrium, and population structure analysis of the tea plant (Camellia sinensis) from an origin center, Guizhou plateau, using genome-wide SNPs developed by genotyping-by-sequencing

et al. 2019

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“…Several studies have screened tea germplasm with caffeine content above 5% of DW in China (Table S2). In particular, 23 wild‐type tea trees from the Dayao Mountains in Guangxi, China have been reported to comprise high caffeine contents (5.03%−8.39% of DW) (Jiang et al., 2018). Additionally, the caffeine content in young leaves is higher than that in older leaves.…”

Section: Special Tea Products Featuring Purine Alkaloidsmentioning

confidence: 99%

Special tea products featuring functional components: Health benefits and processing strategies

Yang

Meng

Shi

et al. 2023

Comp Rev Food Sci Food Safe

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The functional components in tea confer various potential health benefits to humans. To date, several special tea products featuring functional components (STPFCs) have been successfully developed, such as O‐methylated catechin‐rich tea, γ‐aminobutyric acid‐rich tea, low‐caffeine tea, and selenium‐rich tea products. STPFCs have some unique and enhanced health benefits when compared with conventional tea products, which can meet the specific needs and preferences of different groups and have huge market potential. The processing strategies to improve the health benefits of tea products by regulating the functional component content have been an active area of research in food science. The fresh leaves of some specific tea varieties rich in functional components are used as raw materials, and special processing technologies are employed to prepare STPFCs. Huge progress has been achieved in the research and development of these STPFCs. However, the current status of these STPFCs has not yet been systematically reviewed. Here, studies on STPFCs have been comprehensively reviewed with a focus on their potential health benefits and processing strategies. Additionally, other chemical components with the potential to be developed into special teas and the application of tea functional components in the food industry have been discussed. Finally, suggestions on the promises and challenges for the future study of these STPFCs have been provided. This paper might shed light on the current status of the research and development of these STPFCs. Future studies on STPFCs should focus on screening specific tea varieties, identifying new functional components, evaluating health‐promoting effects, improving flavor quality, and elucidating the interactions between functional components.

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Genomic Variation and Adaptative Evolution of Tea Plants

Tong,

Wu,

Wang

et al. 2024

Concepts and Strategies in Plant Sciences

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A treasure reservoir of genetic resource of tea plant (Camellia sinensis) in Dayao Mountain

Cited by 8 publications

References 20 publications

Genetic diversity, linkage disequilibrium, and population structure analysis of the tea plant (Camellia sinensis) from an origin center, Guizhou plateau, using genome-wide SNPs developed by genotyping-by-sequencing

Genetic diversity, linkage disequilibrium, and population structure analysis of the tea plant (Camellia sinensis) from an origin center, Guizhou plateau, using genome-wide SNPs developed by genotyping-by-sequencing

Special tea products featuring functional components: Health benefits and processing strategies

Genomic Variation and Adaptative Evolution of Tea Plants

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