The first complete chloroplast genome of Hovenia dulcis Thunb. (Rhamnaceae)

Dan Liu; Bo-Qiang Tong; Wen-Qing Li; Lei Wang; Yang Xian; Biao Han; Xin Dong; Yi-Zeng Lu; Wei Li; Xiao-Man Xie

doi:10.1080/23802359.2021.1887772

The first complete chloroplast genome of Hovenia dulcis Thunb. (Rhamnaceae)

Mitochondrial DNA B Resour. 2021 Mar 17;6(3):916-917. doi: 10.1080/23802359.2021.1887772.

Authors

Dan Liu^{1

2}, Bo-Qiang Tong², Wen-Qing Li², Lei Wang², Yang Xian², Biao Han², Xin Dong², Yi-Zeng Lu², Wei Li², Xiao-Man Xie^{2

3}

Affiliations

¹ College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, People's Republic of China.
² Shandong Forest Germplasm Resources Center, Ji'nan, Shandong Province, People's Republic of China.
³ Key Lab of Plant Stress Research, College of Life Sciences, Shandong Normal University, Ji'nan, Shandong, China.

Abstract

The complete chloroplast genome of Hovenia dulcis was sequenced with Illumina HiSeq 2000 platform. It was a typical quadruple structure as other plants of Hovenia with 162,962 bp in length, including a large single-copy (LSC: 90,900 bp) region and a small single-copy (SSC: 18,920 bp) which were separated by a pair of inverted repeats (IRa, b: 26,571 bp) region. The overall GC content is 36.6%. A total of 130 genes was annotated which contained 85 protein-coding genes including the Trans splicing gene of rps12, 37 tRNA genes, and 8 rRNA genes. ML phylogenetic analysis compared with 6 expressed chloroplast genomes of Rhamnaceae revealed that H. dulcis was closely related to the species of Zizyphus, and which were clustered into a group with Z. jujuba, Z. mauritiana and Z. spina-christi. Hovenia dulcis was relatively distant to other species of Berchemiella and Rhamnus, which were clustered into another group.

Keywords: Hovenia dulcis; chloroplast genome; phylogenetic relationship.

Grants and funding

The study was financially supported by Wild Plant Protection and Management Project of ‘Conservation of Germplasm Resources of Chinese Endemic Species of National Key Protected Wild Plants’ [2019073031]; ‘Collection, Conservation, and Accurate Identification of Forest Tree Germplasm Resources’ of Shandong Provincial Agricultural Elite Varieties Project [2019LZGC018].