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Molecular phylogenetics and evolution v.118, 2018년, pp.265 - 285   SCI SCIE
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Phylogeny and systematics of the brake fern genus Pteris (Pteridaceae) based on molecular (plastid and nuclear) and morphological evidence

Zhang, Liang    (Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, PR China   ); Zhang, Li-Bing    (Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, PR China  );
  • 초록  

    Abstract The brake fern genus Pteris belongs to Pteridaceae subfamily Pteridoideae. It is one of the largest fern genera and has been estimated to contain 200–250 species distributed on all continents except Antarctica. Previous studies were either based on plastid data only or based on both plastid and nuclear data but the sampling was small. In addition, an infrageneric classification of Pteris based on morphological and molecular evidence has not been available yet. In the present study, based on molecular data of eight plastid markers and one nuclear marker ( gapCp ) of 256 accessions representing ca. 178 species of Pteris , we reconstruct a global phylogeny of Pteris . The 15 major clades identified earlier are recovered here and we further identified a new major clade. Our nuclear phylogeny recovered 11 of these 16 major clades, seven of which are strongly supported. The inclusion of Schizostege in Pteris is confirmed for the first time. Based on the newly reconstructed phylogeny and evidence from morphology, distribution and/or ecology, we classify Pteris into three subgenera: P. subg. Pteris , P. subg. Campteria , and P. subg. Platyzoma. The former two are further divided into three and 12 sections, respectively. Highlights It deals with one of the largest fern genera. A large sampling (256 accessions and ca. 178 species) across the world has been achieved. It is a fern phylogeny based on both plastid and nuclear data. The inclusion of Schizostege in Pteris is confirmed for the first time. It proposes an infrageneric classification. Graphical abstract [DISPLAY OMISSION]


  • 주제어

    Fern phylogeny .   Nuclear gapCp .   Plastid .   Pteris .   Schizostege .   Systematics.  

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