The complete chloroplast genome and phylogenetic analysis of Stewartia sichuanensis (Theaceae), a Chinese endemic tree with narrow distribution

Han-Yang Lin; Chao-Nan Cai

doi:10.1080/23802359.2023.2192829

The complete chloroplast genome and phylogenetic analysis of Stewartia sichuanensis (Theaceae), a Chinese endemic tree with narrow distribution

Mitochondrial DNA B Resour. 2023 Mar 29;8(3):457-460. doi: 10.1080/23802359.2023.2192829. eCollection 2023.

Authors

Han-Yang Lin^{1

2}, Chao-Nan Cai^{1

2}

Affiliations

¹ School of Advanced Study, Taizhou University, Taizhou, China.
² Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, China.

Abstract

Stewartia sichuanensis is a rare plant species of Theaceae and is endemic to China. Its distribution area is highly restricted, and genomic information is extremely limited. The present study reports the first complete chloroplast of S. sichuanensis. The chloroplast genome length was 158,903 bp, with a GC content of 37.3%. The chloroplast genome was comprised of an 87,736 bp long large single copy (LSC), an 18,435 bp long small single copy (SSC), and two copies of inverted repeat (IR) regions of 26,366 bp. It contained 129 genes, including 85 encoding, 36 transfer RNA, and eight ribosomal RNA genes. The phylogenetic analysis suggested that S. sichuanensis was closely related to S. laotica and S. pteropetiolata.

Keywords: Stewartia sichuanensis; chloroplast genome; endemic plant of China; phylogeny.

Grants and funding

This work was supported by the National Natural Science Foundation of China [No. 32100164].