文献类型：期刊文献

英文题名：Complete chloroplast genomes of three sand-fixing Salix shrubs from Northwest China: comparative and phylogenetic analysis and interspecific identification

作者：Lu, Dongye[1,2] Huang, Haiguang[1,3] Zhang, Lei[4] Hao, Lei[5] Zhang, Guosheng[1]

第一作者：Lu, Dongye

机构：[1] College of Forestry, Inner Mongolia Agricultural University, Hohhot, 010019, China; [2] Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, China; [3] Inner Mongolia Academy of Forestry Science, Hohhot, 010010, China; [4] State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of the National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China; [5] College of Resources and Environmental Economics, Inner Mongolia University of Finance and Economics, Hohhot, 010051, China

年份：2023

卷号：37

期号：3

起止页码：849-861

外文期刊名：Trees - Structure and Function

收录：EI(收录号：20230413423700);Scopus(收录号：2-s2.0-85146563734)

语种：英文

外文关键词：DNA sequences - RNA

摘要：Key message: By comparing the chloroplast genomes of three willows, it is found that the genome structure is relatively conservative, and the large variations are more derived from the noncoding regions. Abstract: Salix L., the largest genus in Salicaceae, has great value in ecology and economy. Here, we compared the chloroplast genomes of three important sand-fixing shrubs of the genus Salix: Salix gordejevii (size: 155,279 bp); S. cheilophila (size: 155,322 bp); and S. psammophila (size: 155,278 bp). The quadripartite circular structures of these genome sequences have the same structure and gene contents with 84 protein-coding genes, 38 tRNA genes, and eight rRNA genes. Long repeats including forward and palindromic repeats were found in three plastomes. The mononucleotide simple sequence repeats (SSRs) were dominant and accounted for more than 64% in all three plastomes, whereas hexanucleotide SSRs existed only in S. gordejevii. The noncoding and intergenic regions have greater variations than the coding regions, and eight highly variable regions were identified within the Salix chloroplast genomes, which could be utilized as potential markers for phylogenetic studies and phylogeography. In addition, we found 34 indels with more than 5 bases, which can be used to further identify S. gordejevii and S. psammophila with similar morphologies. Phylogenetic analysis based on whole cp genomes showed that S. gordejevii and S. magnifica are closely related, S. psammophila was a sister to S. suchowensis, and S. cheilophila clustered with them. The completed genomes in this study provide useful genetic resources for future research on species identification, phylogenetic relationships, and the adaptive evolution of Salix species. ? 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.