文献类型：期刊文献

英文题名：Comparison of chloroplast genomes of compound-leaved maples and phylogenetic inference with other Acer species

作者：Xia, Xinhe[1] Yu, Xuedan[1] Fu, Qidi[2] Zhao, Yuxian[1] Zheng, Yongqi[1] Wu, Yuxia[1] Zhang, Chuanhong[1]

第一作者：Xia, Xinhe

通信作者：Zhang, CH[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Lab Forest Silviculture & Tree Cultivat, Beijing, Peoples R China;[2]Huabanlv Nat Enlightenment Educ Technol Co Ltd, Beijing, Peoples R China

年份：2022

卷号：18

期号：2

外文期刊名：TREE GENETICS & GENOMES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000752897600001)】；

基金：This work was supported by the Fundamental Research Fund of CAF (CAFYBB2020ZB005-01).

语种：英文

外文关键词：Acer; Chloroplast genome; Divergent regions; Phylogeny; Hybrid origin; Xinhe Xia and Xuedan Yu contributed equally to this paper

摘要：Acer L. (Sapindaceae) consists of approximately 200 species, with great ornamental and commercial values. However, due to a substantial divergence in inflorescence, leaf shape, and fruit shape during the process of long-term natural evolution, it is remarkably difficult to distinguish them by morphological features. Eight species with compound-leaved maples from Sect. Trifoliata, Pentaphylla, and Negundo play an important role in revealing the morphological variation of Acer. Hence, the complete chloroplast (cp) genomes of all eight compound-leaved maples native to Asia were characterized, and comparative genomic analysis was conducted to infer their phylogenetic relationships. A few differences were found in cp genome size and gene content among eight Acer species. The gene rps2 was only identified in A.griseum. The differences in the cp genome sequences among eight Acer species have been clearly demonstrated, where matK-rps16, trnE-trnT, ndhC-trnV, ccsA-ndhD, and ycf1-trnN were the most divergent regions. The phylogenetic analysis revealed that Acer was clustered into monophyly by 100% bootstrap values, with A.glabrum (Sect. Glabra) and A.pseudoplatanus (Sect. Palmata) as the most basic species. Except for A.henryi and A. negundo, seven compound-leaved maples and some simple-leaved maples were highly supported to cluster into one clade with A.sutchuenense as the primitive species of Sect. Trifoliata and A.pentaphyllum as a series (Ser. Pentaphylla) of Sect. Pentaphylla. Besides, it is speculated by plastid phylogeny reconstruction that A.cissifolium (Sect. Negundo) may have ancestral connections with A. triflorum (Sect. Trifoliata). Finally, we conjectured that compound-leaved maples may have evolved from simple-leaved maples.