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Deciphering tea tree chloroplast and mitochondrial genomes of Camellia sinensis var. assamica.

ABSTRACT: Tea is the most popular non-alcoholic caffeine-containing and the oldest beverage in the world. In this study, we de novo assembled the chloroplast (cp) and mitochondrial (mt) genomes of C. sinensis var. assamica cv. Yunkang10 into a circular contig of 157,100?bp and two complete circular scaffolds (701719 bp and 177329 bp), respectively. We correspondingly annotated a total of 141 cp genes and 71 mt genes. Comparative analysis suggests repeat-rich nature of the mt genome compared to the cp genome, for example, with the characterization of 37,878?bp and 149?bp of long repeat sequences and 665 and 214 SSRs, respectively. We also detected 478 RNA-editing sites in 42 protein-coding mt genes, which are ~4.4-fold more than 54 RNA-editing sites detected in 21 protein-coding cp genes. The high-quality cp and mt genomes of C. sinensis var. assamica presented in this study will become an important resource for a range of genetic, functional, evolutionary and comparative genomic studies in tea tree and other Camellia species of the Theaceae family.


PROVIDER: S-EPMC6797725 | BioStudies | 2019-01-01


REPOSITORIES: biostudies

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