Characterization of the complete chloroplast genome of Malus baccata var. xiaojinensis

Yuan Ren; Ming Yan; Xueqing Zhao; Xuesen Chen; Zhaohe Yuan

doi:10.1080/23802359.2019.1638840

Characterization of the complete chloroplast genome of Malus baccata var. xiaojinensis

Mitochondrial DNA B Resour. 2019 Jul 16;4(2):2487-2488. doi: 10.1080/23802359.2019.1638840.

Authors

Yuan Ren^{1

2}, Ming Yan^{1

2}, Xueqing Zhao^{1

2}, Xuesen Chen³, Zhaohe Yuan^{1

2}

Affiliations

¹ Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China.
² College of Forestry, Nanjing Forestry University, Nanjing, China.
³ State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong, China.

Abstract

Malus baccata var. xiaojinensis belonging to Rosaceae is not only an ornamental tree but also an apple genotype that is highly tolerant to Fe deficiency. In this study, we reported the complete chloroplast (cp) genome of M. baccata var. xiaojinensis using ILLUMINA sequencing. The whole cp genome is 160,067 bp in length, containing a pair of inverted repeats (IRs) of 26,358 bp, a large single copy (LSC) region of 88,157 bp and a small single copy (SSC) region of 19,194 bp. And, the overall GC content of the cp genome was 36.56%. A total of 110 unique genes were found in the cp genome. 17 genes were duplicated in the IRs, including six protein-coding genes, seven tRNA genes, and four rRNA genes. Fourteen genes contained one intron, whereas three genes (rps12, clpP, and ycf3) contained two introns. The phylogenetic analysis demonstrated a close relationship between M. baccata var. xiaojinensis and Malus hupehensis.

Keywords: Malus baccata var. xiaojinensis; complete chloroplast genome; phylogenetic analysis.