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Biodiversity Conservation of the Genus Incarvillea Juss. (Bignoniaceae) Based on Molecular Diversity and Species Richness Assessment

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Abstract

Incarvillea is a genus with considerable ornamental and medicinal value, yet many of its 16 species are threatened in the wild and two (Incarvillea forrestii and Incarvillea altissima) may be extinct. An extensive field survey of the Chinese species has shown that logging is the greatest threat to woodland margin species, while overgrazing by cattle endangers species from alpine meadows. To aid the setting of conservation priorities, we used phylogenetic weighting of species, based on the molecular phylogeny of both nuclear (nrITS) and chloroplast (trnL-F region) gene regions. We estimated molecular diversity with measures for genetic diversity (GD) and phylogenetic diversity (PD). PD/GD values highlighted the importance of Incarvillea sinensis and two Central Asian species, Incarvillea semiretschenskia and Incarvillea olgae from Kazakstan and Kirghizia, for which little is known. This combination of phylogenetic and complementarity analyses focused on the provinces of Sichuan, Yunnan, and Qinghai, with Yunnan having the only adequately protected areas for that genus.

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Acknowledgements

This study was jointly funded by the National Natural Science Foundation of China (30770137), the Natural Science Foundation of Yunnan Province (2007C087M), and the West Light Foundation of the Chinese Academy of Sciences.

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Authors and Affiliations

  1. Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, 650204, China

    Shaotian Chen & Zhekun Zhou

  2. Sichuan Radio and TV University, Chengdu, Sichuan, 610073, China

    Jing Gong

  3. Botanical Garden, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, 650204, China

    Kaiyun Guan

Authors
  1. Shaotian Chen
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  2. Jing Gong
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  3. Kaiyun Guan
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  4. Zhekun Zhou
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Correspondence to Zhekun Zhou.

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Chen, S., Gong, J., Guan, K. et al. Biodiversity Conservation of the Genus Incarvillea Juss. (Bignoniaceae) Based on Molecular Diversity and Species Richness Assessment. J. Plant Biol. 53, 387–394 (2010). https://doi.org/10.1007/s12374-010-9127-6

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  • DOI: https://doi.org/10.1007/s12374-010-9127-6

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