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Int. J. Mol. Sci. 2012, 13(11), 14623-14633; doi:10.3390/ijms131114623

Molecular Systematics of Genus Atractylodes (Compositae, Cardueae): Evidence from Internal Transcribed Spacer (ITS) and trnL-F Sequences

1 Institute of Chinese Materia Medica, China Academy of Chinese Medical Science, Beijing 100700, China 2 Department of Pharmacy, Anhui University of Traditional Chinese Medicine, Hefei 230031, China
* Author to whom correspondence should be addressed.
Received: 13 August 2012 / Revised: 26 October 2012 / Accepted: 30 October 2012 / Published: 9 November 2012
(This article belongs to the Section Biochemistry, Molecular Biology and Biophysics)
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To determine the evolutionary relationships among all members of the genus Atractylodes (Compositae, Cardueae), we conducted molecular phylogenetic analyses of one nuclear DNA (nrDNA) region (internal transcribed spacer, ITS) and one chloroplast DNA (cpDNA) region (intergenic spacer region of trnL-F). In ITS and ITS + trnL-F trees, all members of Atractylodes form a monophyletic clade. Atractylodes is a sister group of the Carlina and Atractylis branch. Atractylodes species were distributed among three clades: (1) A. carlinoides (located in the lowest base of the Atractylodes phylogenetic tree), (2) A. macrocephala, and (3) the A. lancea complex, including A. japonica, A. coreana, A. lancea, A. lancea subsp. luotianensis, and A. chinensis. The taxonomic controversy over the classification of species of Atractylodes is mainly concentrated in the A. lancea complex. In base on molecular results, the intraspecific division of Atractylodes lancea is not supported, and A. coreana should be treated as a synonym A. chinensis.
Keywords: Atractylodes; ITS; phylogenetics; plastid DNA; trnL-F Atractylodes; ITS; phylogenetics; plastid DNA; trnL-F
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Peng, H.-S.; Yuan, Q.-J.; Li, Q.-Q.; Huang, L.-Q. Molecular Systematics of Genus Atractylodes (Compositae, Cardueae): Evidence from Internal Transcribed Spacer (ITS) and trnL-F Sequences. Int. J. Mol. Sci. 2012, 13, 14623-14633.

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