Polymorphism and evolution of ribosomal DNA in tea (Camellia sinensis, Theaceae).

  title={Polymorphism and evolution of ribosomal DNA in tea (Camellia sinensis, Theaceae).},
  author={Jing Xu and Ying Xu and Takahiro Yonezawa and Lijia Li and Masami Hasegawa and F. -J. Lu and Jiakuan Chen and Wenju Zhang},
  journal={Molecular phylogenetics and evolution},
Ribosomal DNA (rDNA) repeats often exhibit a high level of within-species homogeneity, but intra-individual polymorphism of rDNA has been found in Camellia species. In order to reveal the evolutionary pattern of rDNA repeats in tea [Camellia sinensis (L.) O. Kuntze], we identified the 45S rDNA loci, estimated their copy number, and cloned partial regions of them from different PCR products and from digested genomic DNA. The results show that there are 3 loci (6 sites) containing 45S rDNA in the… CONTINUE READING
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