The complete chloroplast genome sequence of <i>Sedum bulbiferum</i> (Crassulaceae)

Deng, Zijie; Huang, Kerui; Xie, Peng; Xie, Shuyun; Zhang, NingYun; Yin, Hanbin; Mo, Ping; Wang, Yun

doi:10.1080/23802359.2022.2160220

Cited by 1 publication

(1 citation statement)

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“…With approximately 73% of species assigned within the Acre clade, the remaining Sedum species are surprisingly intermingled with other Sempervivoideae clades [11]. This confusion may be due to insufficient data, limited resolution, or weak branch support [11][12][13]. To clarify the phylogenetic relationships within Sedum, further sampling and improved classification methods are needed.…”

Section: Introductionmentioning

confidence: 99%

Intraspecific and Intrageneric Genomic Variation across Three Sedum Species (Crassulaceae): A Plastomic Perspective

Zhang,

Han,

et al. 2024

Genes

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Sedum is the largest succulent genus in Crassulaceae. Because of predominant maternal inheritance, little recombination, and slow evolution, plastomes can serve as powerful super barcodes for inter- or intra-species phylogenetic analyses. While previous research has focused on plastomes between Sedum species, intra-species studies are scarce. Here, we sequenced plastomes from three Sedum species (Sedum alfredii, Sedum plumbizincicola, and Sedum japonicum) to understand their evolutionary relationships and plastome structural evolution. Our analyses revealed minimal size and GC content variation across species. However, gene distribution at IR boundaries, repeat structures, and codon usage patterns showed diversity at both inter-specific and intra-specific levels. Notably, an rps19 gene expansion and a bias toward A/T-ending codons were observed. Codon aversion motifs also varied, potentially serving as markers for future studies. Phylogenetic analyses confirmed the non-monophyly of Sedum and divided the Acre clade into two groups. Individuals from the same species clustered together, with strong support for the relationships between S. alfredii, S. tricarpum, and S. plumbizincicola. Additionally, S. japonicum clearly affiliates with the Acre clade. This study provides valuable insights into both intra-specific and intra-generic plastome variation in Sedum, as well as overall plastome evolution within the genus.

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