Dataset Information

The complete chloroplast genome sequence of Camellia ptilophylla (Theaceae): a natural caffeine-free tea plant endemic to China.

ABSTRACT: Camellia ptilophylla is a natural caffeine-free tea plant endemic to China with high commercial and therapeutic values. Here, we report the complete chloroplast genome assembled using Illumina pair-end sequencing data. The chloroplast genome was 157,097?bp in length, with a large single copy (LSC) region of 86,631?bp, a small single copy (SSC) region of 18,286?bp, separated by two inverted repeat (IR) regions of 26,090?bp each. It contains a total of 132 genes, with an overall GC content of 37.3%. The phylogenetic analysis showed that C. ptilophylla is sister to a congeneric species, C. reticulata.

SUBMITTER: Li W

PROVIDER: S-EPMC7799551 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature

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The complete chloroplast genome sequence of <i>Camellia ptilophylla</i> (Theaceae): a natural caffeine-free tea plant endemic to China.

Li Weixi W Xing Fen F Ng Wei Lun WL Zhou Yubing Y Shi Xianggang X

Mitochondrial DNA. Part B, Resources 20180401 1

<i>Camellia ptilophylla</i> is a natural caffeine-free tea plant endemic to China with high commercial and therapeutic values. Here, we report the complete chloroplast genome assembled using Illumina pair-end sequencing data. The chloroplast genome was 157,097 bp in length, with a large single copy (LSC) region of 86,631 bp, a small single copy (SSC) region of 18,286 bp, separated by two inverted repeat (IR) regions of 26,090 bp each. It contains a total of 132 genes, with an overall GC content ...[more]

PMID: 33474191

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Project description:BACKGROUND: Tea is one of the most popular beverages in the world. Many species in the Thea section of the Camellia genus can be processed for drinking and have been domesticated. However, few investigations have focused on the genetic consequence of domestication and geographic origin of landraces on tea plants using credible wild and planted populations of a single species. Here, C. taliensis provides us with a unique opportunity to explore these issues. RESULTS: Fourteen nuclear microsatellite loci were employed to determine the genetic diversity and domestication origin of C. taliensis, which were represented by 587 individuals from 25 wild, planted and recently domesticated populations. C. taliensis showed a moderate high level of overall genetic diversity. The greater reduction of genetic diversity and stronger genetic drift were detected in the wild group than in the recently domesticated group, indicating the loss of genetic diversity of wild populations due to overexploitation and habitat fragmentation. Instead of the endangered wild trees, recently domesticated individuals were used to compare with the planted trees for detecting the genetic consequence of domestication. A little and non-significant reduction in genetic diversity was found during domestication. The long life cycle, selection for leaf traits and gene flow between populations will delay the emergence of bottleneck in planted trees. Both phylogenetic and assignment analyses suggested that planted trees may have been domesticated from the adjacent central forest of western Yunnan and dispersed artificially to distant places. CONCLUSIONS: This study contributes to the knowledge about levels and distribution of genetic diversity of C. taliensis and provides new insights into genetic consequence of domestication and geographic origin of planted trees of this species. As an endemic tea source plant, wild, planted and recently domesticated C. taliensis trees should all be protected for their unique genetic characteristics, which are valuable for tea breeding.

Dataset Information

The complete chloroplast genome sequence of Camellia ptilophylla (Theaceae): a natural caffeine-free tea plant endemic to China.

Publications

The complete chloroplast genome sequence of <i>Camellia ptilophylla</i> (Theaceae): a natural caffeine-free tea plant endemic to China.

Similar Datasets

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