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. 2012 Nov 9;13(11):14623-33.
doi: 10.3390/ijms131114623.

Molecular systematics of Genus Atractylodes (Compositae, Cardueae): evidence from Internal Transcribed Spacer (ITS) and trnL-F sequences

Hua-Sheng Peng  1 , Qing-Jun Yuan, Qian-Quan Li, Lu-Qi Huang
Affiliations

Molecular systematics of Genus Atractylodes (Compositae, Cardueae): evidence from Internal Transcribed Spacer (ITS) and trnL-F sequences

Hua-Sheng Peng et al. Int J Mol Sci. .

Abstract

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.

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Figures

Figure 1
Figure 1
The 50% majority rule consensus tree from Bayesian Inference (BI) analysis of the combined ITS and trnL-F dataset; Maximum parsimony and ML bootstrap values and Bayesian posterior probabilities are shown above branches (MP/ML/BI). ▲ indicates ≤ 50% support. Taxa with * were downloaded from GenBank. Among the Atractylodes, the taxon with red color represent red flower, and the blue colored have white flower. Taxa with green color have obvious petiole, and gray colored have no petiole.
Figure 2
Figure 2
Geographic distribution of Atractylodes and sample collection location in China (▲: A.japonica; ■: A.chinensis; δ: A. coreana; ⋄: A. lancea or A.lancea subsp luotianensis; •: A. macrocephala;○: A. carlinoides).
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