Analysis of systemic development in the genus Alangium chinense and its related genera plants based on chloroplast genome

doi:10.14088/j.cnki.issn0439-8114.2025.01.027

Abstract

Abstract: In order to clarify the structural characteristics and phylogenetic relationships of the chloroplast genome of Alangium chinense （Lour.） Harms, Illumina high-throughput sequencing technology was used to sequence the chloroplast genome of Alangium chinense, followed by assembly, annotation, and structural analysis. Using mVISTA and Geneous software, homologous alignment and collinearity analysis were performed on the chloroplast genome of Alangium chinense, Alangium kurzii Craib, Alangium alpinum, Alangium chinense MG524996, and Alangium chinense NC044840. A plant phylogenetic tree was constructed using MEGA 11 software. The results showed that the complete chloroplast genome of Alangium chinense was 156 672 bp in length, with a double-stranded circular structure and a GC proportion of 37.69%;the chloroplast genome consists of 130 coding genes, including 81 protein coding genes （PCGs）, 38 tRNA transport genes, 8 rRNA genes, and 3 pseudogenes, accounting for 62.31%, 29.23%, 6.15%, and 2.31% of the chloroplast genome sequence, respectively. Through homology comparison and collinearity analysis, it was found that the chloroplast genome of five plants （Alangium chinense and four other plants in the Alangium chinense genus） exhibited high similarity and collinearity.Phylogenetic analysis indicated that Alangium chinense was most closely related Alangium alpinum, suggesting their collinearity in evolution. It was speculated that Alangium chinense was a new subspecies.

Key words: chloroplast genome, Alangium chinense genus, related genera plants, systemic development

CLC Number:

R931

YANG Yu-xia, LI Jing-ting, LI Ying, SU Chen, YAN Rui, WEI Ze-chang. Analysis of systemic development in the genus Alangium chinense and its related genera plants based on chloroplast genome[J]. HUBEI AGRICULTURAL SCIENCES, 2025, 64(1): 168-173.

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