The complete chloroplast genome sequence of Athrotaxis cupressoides

Zhitong Han; Jialiang Li; Kangshan Mao

doi:10.1080/23802359.2021.2002207

The complete chloroplast genome sequence of Athrotaxis cupressoides

Mitochondrial DNA B Resour. 2021 Nov 26;6(12):3468-3470. doi: 10.1080/23802359.2021.2002207. eCollection 2021.

Authors

Zhitong Han¹, Jialiang Li¹, Kangshan Mao¹

Affiliation

¹ Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, PR China.

Abstract

Athrotaxis cupressoides (Cupressaceae) is a Tasmanian endemic conifer. It is mainly threatened by habitat fragmentation and limited distribution, yet little is known about its genomic background. In this study, the complete chloroplast (cp) genome of the species was assembled and annotated. The cp genome of A. cupressoides is a circular of 134,248 bp in size, where the inverted repeat regions (IRs) were lost. A total of 112 unique genes were annotated, including 78 proteins-coding genes, four rRNA genes, and 30 tRNA genes. The maximum likelihood (ML) phylogenetic tree indicates that the subfamily Athrotaxidoideae, to which A. cupressoides belongs, is sister to a clade including four subfamilies including Sequoioideae, Taxodioideae, Cupressoideae, and Callitroideae. The complete cp genome will be helpful to further studies on the conservation of this species and the evolutionary history of Cupressaceae.

Keywords: Athrotaxis cupressoides; Chloroplast genome; phylogenetic tree.

Grants and funding

This work is financially supported by National Natural Science Foundation of China [grant No. U20A2080; 31622015] and Sichuan University [Fundamental Research Funds for Central University Basic Research Fund of China, SCU2020D003, SCU2021D006].