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Phylogenetic position ofEphedra rhytidosperma, a species endemic to China: Evidence from chloroplast and ribosomal DNA sequences

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Chinese Science Bulletin

Abstract

The chloroplast genes matK. and rbcL, ribosomal gene 18S and ITS regions of nuclear ribosomal DNA fromEphedra rhytidosperma, a species endemic to China, were sequenced and its phylogenetic position was investigated. Independent and combined phylogenetic analyses for the DNA sequences from 16 taxa representing 15 species of the genusEphedra were performed using the maximum parsimony (MP), neighbor-joining (NJ), minimum evolution (ME) and maximum likelihood (ML) methods. The results indicate thatE. rhytidosperma is closely related toE. equisetina. The divergence time between them is estimated to be 10.85±2.44 Ma based on the results of the relative-rate tests and the evolutionary rate of rbcL gene.

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Authors and Affiliations

  1. Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, School of Life Sciences, Fudan University, 200433, Shanghai, China

    Qingbiao Wang, Li Wang, Xiaoming Zhao & Yang Zhong

  2. State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, 510275, Guangzhou, China

    Renchao Zhou & Suhua Shi

  3. Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, China

    Yong Yang

  4. Shanghai Center for Bioinformation Technology, 201203, Shanghai, China

    Yang Zhong

Authors
  1. Qingbiao Wang
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  2. Li Wang
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  3. Renchao Zhou
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  4. Xiaoming Zhao
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  5. Suhua Shi
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  6. Yong Yang
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  7. Yang Zhong
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Corresponding authors

Correspondence to Yong Yang or Yang Zhong.

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These authors contributed equally to this work.

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Wang, Q., Wang, L., Zhou, R. et al. Phylogenetic position ofEphedra rhytidosperma, a species endemic to China: Evidence from chloroplast and ribosomal DNA sequences. Chin.Sci.Bull. 50, 2901–2904 (2005). https://doi.org/10.1007/BF02899657

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  • DOI: https://doi.org/10.1007/BF02899657

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