Your browser doesn't support javascript.
loading
Plastid genome and its phylogenetic implications of Asiatic Spiraea (Rosaceae).
Zhang, Shu-Yan; Yan, Hai-Fei; Wei, Lei; Liu, Tong-Jian; Chen, Lin; Hao, Gang; Wu, Xing; Zhang, Qiao-Ling.
Afiliação
  • Zhang SY; College of Life Sciences, South China Agricultural University, Guangzhou, 510642, China.
  • Yan HF; Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.
  • Wei L; South China National Botanical Garden, Guangzhou, 510650, China.
  • Liu TJ; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.
  • Chen L; Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.
  • Hao G; South China National Botanical Garden, Guangzhou, 510650, China.
  • Wu X; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.
  • Zhang QL; Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.
BMC Plant Biol ; 24(1): 23, 2024 Jan 03.
Article em En | MEDLINE | ID: mdl-38166728
ABSTRACT

BACKGROUND:

Spiraea L. is a genus comprising approximately 90 species that are distributed throughout the northern temperate regions. China is recognized as the center of species diversity for this genus, hosting more than 70 species, including 47 endemic species. While Spiraea is well-known for its ornamental value, its taxonomic and phylogenetic studies have been insufficient.

RESULTS:

In this study, we conducted sequencing and assembly of the plastid genomes (plastomes) of 34 Asiatic Spiraea accessions (representing 27 Asiatic Spiraea species) from China and neighboring regions. The Spiraea plastid genome exhibits typical quadripartite structures and encodes 113-114 genes, including 78-79 protein-coding genes (PCGs), 30 tRNA genes, and 4 rRNA genes. Linear regression analysis revealed a significant correlation between genome size and the length of the SC region. By the sliding windows method, we identified several hypervariable hotspots within the Spiraea plastome, all of which were localized in the SC regions. Our phylogenomic analysis successfully established a robust phylogenetic framework for Spiraea, but it did not support the current defined section boundaries. Additionally, we discovered that the genus underwent diversification after the Early Oligocene (~ 30 Ma), followed by a rapid speciation process during the Pliocene and Pleistocene periods.

CONCLUSIONS:

The plastomes of Spiraea provided us invaluable insights into its phylogenetic relationships and evolutionary history. In conjunction with plastome data, further investigations utilizing other genomes, such as the nuclear genome, are urgently needed to enhance our understanding of the evolutionary history of this genus.
Assuntos
Palavras-chave

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Rosaceae / Spiraea / Genomas de Plastídeos / Genoma de Cloroplastos Tipo de estudo: Prognostic_studies Idioma: En Revista: BMC Plant Biol Assunto da revista: BOTANICA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: China País de publicação: Reino Unido

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Rosaceae / Spiraea / Genomas de Plastídeos / Genoma de Cloroplastos Tipo de estudo: Prognostic_studies Idioma: En Revista: BMC Plant Biol Assunto da revista: BOTANICA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: China País de publicação: Reino Unido