The first chloroplast genome of rare Japanese peony Paeonia suffruticosa ‘Cun Song Ying’: comparative genomics and maternal origin insight
Year: 2026
Type: article
Abstract: • Paeonia suffruticosa ‘Cun Song Ying’ is a rare Japanese horticultural variety with significant ornamental value, but its genomic characteristics and phylogenetic status remain unreported. This study reports the first complete chloroplast (cp) genome of P. suffruticosa ‘Cun Song Ying’ to fill the gap in its genomic and evolutionary research, aiming to provide a theoretical basis for peony cultivar identification, origin research, and breeding protection. • High-throughput sequencing combined with bioinformatics tools was used for genome assembly, annotation, and comparative analyses with 15 related Paeoniaceae species. The cp genome of ‘Cun Song Ying’ was systematically characterized in terms of structural features, repetitive sequences, codon usage bias, and phylogenetic relationships. • The 152,704 bp cp genome has a typical quadripartite structure (LSC:84,365 bp; SSC:17,047 bp; IR:25,646 bp×2), encodes 138 genes, with 6 hypervariable regions, 43 tandem repeats, 73 SSRs, A/U-preferred codons, and is sister to P. suffruticosa ‘Luo Yang Hong’ (BS = 100, PP = 1.00). • This study enriches the chloroplast genomic resources of Paeoniaceae, clarifies the evolutionary characteristics and phylogenetic position of ‘Cun Song Ying’, and provides important genomic data support for peony cultivar identification, origin tracing, and genetic breeding.
Language: English
Domain: Life Sciences
SDG: Zero hunger
Open Access status: green
OpenAlex ID: W7168024191