摘要：
Artemisia selengenesis is not only a health food, but also a well-known traditional Chinese medicine. Only a fraction of the chloroplast (cp) genome data of Artemisia has been reported and chloroplast genomic materials have been widely used in genomic evolution studies, molecular marker development, and phylogenetic analysis of the genus Artemisia, which makes evolutionary studies, genetic improvement, and phylogenetic identification very difficult. In this study, the complete chloroplast genome of A. selengensis was compared with that of other species within Artemisia and phylogenetic analyses was conducted with other genera in the Asteraceae family. The results showed that A. selengensis is an AT-rich species and has a typical quadripartite structure that is 151,215 bp in length. Comparative genome analyses demonstrated that the available chloroplast genomes of species of Artemisia were well conserved in terms of genomic length, GC contents, and gene organization and order. However, some differences, which may indicate evolutionary events, were found, such as a re-inversion event within the Artemisia genus, an unequal duplicate phenomenon of the ycf1 gene because of the expansion and contraction of the IR region, and the fast-evolving regions. Repeated sequences analysis showed that Artemisia chloroplast genomes presented a highly similar pattern of SSR or LDR distribution. A total of 257 SSRs and 42 LDRs were identified in the A. selengensis chloroplast genome. The phylogenetic analysis showed that A. selengensis was sister to A. gmelinii. The findings of this study will be valuable in further studies to understand the genetic diversity and evolutionary history of Asteraceae.
作者机构：
[周小梅; 李必才; 董萌; 库文珍; 蒋道松] College of Chemistry and Environment Engineering, Hunan City University, Yiyang, Hunan, 413000, China;[赵运林] College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410018, China
作者机构：
[赵运林; 周小梅] College of Architecture and Urban Planning, Hunan City University, Yiyang, 413000, China;[胥正钢] College of Bio-Safety Science and Technology, Hunan Agricultural University, Changsha, 410128, China;[董萌; 库文珍] College of Chemistry and Environment Engineering, Hunan City University, Yiyang, 413000, China
通讯机构：
[Zhao, Y.] C;College of Architecture and Urban Planning, China
作者机构：
[赵运林; 雷存喜; 库文珍] Department of Chemistry and Environment Engineering, Hunan City University, Yiyang 413000, China;College of Biology and Technology, Hunan Agricultural University, Changsha 410128, China;[戴枚斌; 易合成] Administration Bureau of South Dongting Lake Nature Reserve, Yiyang 411000, China;[董萌] Department of Chemistry and Environment Engineering, Hunan City University, Yiyang 413000, China<&wdkj&>College of Biology and Technology, Hunan Agricultural University, Changsha 410128, China
通讯机构：
Department of Chemistry and Environment Engineering, Hunan City University, China
