Complete chloroplast genome sequence and phylogenetic analysis of Populus deltoides Caihong

Abstract

Abstract Colored-leaf plants are increasingly popular, which has higher ecological, economic and social benefits. Caihong poplar, one of colored-leaf plants from Populus deltoides, has been widely used in courtyard embellishment, road greening, garden set King and so on. In this study, the complete chloroplast genome of Caihong poplar was evaluated, and the total chloroplast genome size of which is 156,957\u2009bp in length with 36.69% GC content, including large single-copy region (LSC) of 85,096\u2009bp, a pair of inverted repeat regions (IRs) of 27,649\u2009bp each, and a small single-copy region (SSC) of 16,563\u2009bp. There were 22 tRNA genes, 83 protein-coding genes, and four rRNA genes. The phylogenetic analysis with 22 species indicated that Caihong poplar was closely clustered with Populus deltoides Zhonglin 2025. In conclusion, the complete chloroplast genomes of Caihong poplar in this study provided valuable genomic resources for further phylogeny and species identification in the Populus family.