Complete chloroplast genome and phylogenetic analysis of Meliosma oldhamii Miq. ex Maxim. (Sabiaceae)

Yao Cheng; Xiaogang Xu; Lili Tong; Lu Tian; Chongli Xia; Xunlin Yu

doi:10.1080/23802359.2023.2281034

Complete chloroplast genome and phylogenetic analysis of Meliosma oldhamii Miq. ex Maxim. (Sabiaceae)

Mitochondrial DNA B Resour. 2023 Nov 27;8(11):1306-1310. doi: 10.1080/23802359.2023.2281034. eCollection 2023.

Authors

Yao Cheng^{1

2}, Xiaogang Xu^{1

2}, Lili Tong^{1

3}, Lu Tian^{1

2}, Chongli Xia³, Xunlin Yu⁴

Affiliations

¹ College of Biology and the Environment, Key Laboratory of State Forestry and Grassland Administration on Subtropical Forest Biodiversity Conservation, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China.
² State Environmental Protection Scientific Observation and Research Station for Ecology and Environment of Wuyi Mountains, Nanping, China.
³ School of Horticulture & Landscape Architecture, Jinling Institute of Technology, Nanjing, China.
⁴ College of Forestry, Central South University of Forestry and Technology, Changsha, China.

Abstract

Meliosma oldhamii Miq. is a deciduous arbor and a member of Sabiaceae. It is one of the rare and protected plants with outstanding ornamental and economic value in Jiangsu, China. In addition to the resource values indicated above, there are numerous other elements that require additional research, including the chloroplast (cp) genomic information. In this work, the complete cp genome sequence of M. oldhamii was assembled and characterized for the first time. The complete cp genome of M. oldhamii was 159,950 base pair (bp) in length, including a large single-copy (LSC) region of 87,147 bp, a small single-copy (SSC) region of 18,015 bp, and the inverted repeats (IRs) region of 27,394 bp. It contains 131 genes, including 37 tRNA genes, eight rRNA genes, 85 protein-coding genes, and one pseudogene. The overall GC content of M. oldhamii cp genome was 37.95%. The placement of M. oldhamii in the phylogenetic tree constructed using the complete cp genome is largely congruent with previous studies. The clustering of Meliosma is non-monophyletic, aligns more closely with existing morphological taxonomic studies, thereby enhancing the scholarly and scientific nature of this research.

Keywords: Meliosma oldhamii; Sabiaceae; complete chloroplast genome; phylogenetic analysis.

Grants and funding

This work was supported by The Biodiversity Investigation, Observation and Assessment Program of Ministry of Ecology and Environment of China under Grant Number [20191226]; The Special Fiscal Funds for Repair and Purchase in National Public Institutions under Grant number [2010002002]; Jiangsu Forestry Science and Technology Innovation and Extension Program under Grant number [LYKJ[2023]13].