文献类型：期刊文献

英文题名：Phylogeny of section Leuce (Populus, Salicaceae) inferred from 34 chloroplast DNA fragments

作者：Wang, Dongsheng[1] Wang, Zhaoshan[1,2] Du, Shuhui[1] Zhang, Jianguo[1,2]

第一作者：Wang, Dongsheng

通信作者：Zhang, JG[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, Key Lab Silviculture State Forestry Adm, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[2]Nanjing Forestry Univ, Collaborat Innovat Ctr Sustainable Forestry South, Nanjing 210037, Jiangsu, Peoples R China

年份：2015

卷号：63

起止页码：212-217

外文期刊名：BIOCHEMICAL SYSTEMATICS AND ECOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000367485900032)】；

基金：We sincerely thank Dr. Ge Song, Dr. Zhang Fumin, Dr. Zou Xinhui and Dr. Tang Liang from the State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, China, for their advice regarding data analysis. We also thank Dr. Zeng Yanfei and Dr. Duan Aiguo for collecting specimens and extracting DNA. This research was financially supported by the National Natural Science Foundation of China (Grant No. 31470665).

语种：英文

外文关键词：Chloroplast DNA fragments; Phylogeny; Populus; Rapid radiation; Salicaceae; Section Leuce

摘要：Section Leuce Duby (Populus, Salicaceae) is an important taxon among the 6 sections in the genus Populus. Although biological and taxonomic studies has greatly improved our understanding of this section, the phylogenetic relationships among the species of section Leuce remain uncertain due in part to the limited number of loci for analysis. In the present study, 34 chloroplast DNA fragments, which included 22 new chloroplast DNA fragments as well as 12 chloroplast DNA fragments used previously, were applied to explore interspecific relationships in this section. The inclusion of additional chloroplast DNA fragments recovered a well-resolved phylogeny of section Leuce. According to our phylogenetic tree, (1) we can confirm the monophyly of section Leuce and two sister clade subdivisions; (2) P. tremula L. shows closer affinity to P. davidiana Dode than other species, which has previously been a source of debate; (3) P. tremuloides Michx. and P. grandidentata Michx. form sister subclades; and (4) we propose that the previously unresolved phylogeny of section Leuce is most likely due to insufficient data. Our phylogenetic analysis successfully resolved the phylogeny of section Leuce using a sufficient dataset. This study provides an important foundation for evolutionary studies and for the effective utilization of the wild germplasm resources of section Leuce. (C) 2015 Elsevier Ltd. All rights reserved.