Abstract

The complete chloroplast genome sequence of Populus davidiana was characterized from Illumina pair-end sequencing. The chloroplast genome of P. davidiana was 156,868 bp in length, containing a large single-copy region (LSC) of 84,976 bp, a small single-copy region (SSC) of 16,606 bp, and two inverted repeat (IR) regions of 27,643 bp. The overall GC content is 30.70%, while the correponding values of the LSC, SSC, and IR regions are 64.6%, 69.2%, and 60.1%, respectively. The genome contains 131 complete genes, including 86 protein-coding genes (62 protein-coding gene species), 37 tRNA genes (29 tRNA species) and 8 rRNA genes (4 rRNA species). The Neighbour-joining phylogenetic analysis showed that P. davidiana and Populus rotundifolia clustered together as sisters to other Populus species.

摘要

从Illumina的双末端测序技术可以鉴定出杨树的完整叶绿体基因组序列。的叶绿体基因组山杨的长度为156868个碱基，含84976个碱基，小单拷贝区16606个碱基对（SSC），以及两个的27643反向重复（IR）区域的大单拷贝区（LSC） bp。总GC含量为30.70％，而LSC，SSC和IR区域的对应值分别为64.6％，69.2％和60.1％。该基因组包含131个完整基因，包括86个蛋白质编码基因（62个蛋白质编码基因种类），37个tRNA基因（29个tRNA种类）和8个rRNA基因（4个rRNA种类）。邻居结合系统发育分析表明，P。davidiana和Populus rotundifolia聚集在一起，成为其他胡杨树种的姐妹。