Artículo
Phylogenomic insight into dysploidy, speciation, and plastome evolution of a small Mediterranean genus Reichardia (Cichorieae; Asteraceae)
Autor/es | Cho, Myong‑Suk
Yang, JiYoung Mejías Gimeno, José Antonio Kim, Seung-Chul |
Departamento | Universidad de Sevilla. Departamento de Biología Vegetal y Ecología |
Fecha de publicación | 2022 |
Fecha de depósito | 2023-12-26 |
Publicado en |
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Resumen | Reichardia Roth is a small Mediterranean genus comprising ten homogeneous species with basic
chromosome numbers of 7, 8, and 9. To assess the plastid genome evolution and diferentiation of
Reichardia species, we assembled ... Reichardia Roth is a small Mediterranean genus comprising ten homogeneous species with basic chromosome numbers of 7, 8, and 9. To assess the plastid genome evolution and diferentiation of Reichardia species, we assembled the complete plastome sequences of seven Reichardia and two Launaea species and conducted various phylogenomic analyses comparatively with nuclear ribosomal DNA ITS sequences. Reichardia and Launaea plastomes were highly conserved in gene content and order, containing 130 genes. Plastid phylogenomic reconstruction strongly suggested that Reichardia was a sister to Launaea, and its common ancestor initially diverged into two major lineages: the frst containing species with n= 8 chromosomes exclusively, and the other with n= 9, 8, and 7 chromosomes. Although the ancestral Reichardia karyotype was suggested to most likely be n= 9 from ancestral chromosome number reconstruction, the pattern of descending dysploidy indicated by the phylogenetic trees based on nuclear ribosomal DNA ITS was less evident in the trees based on the plastome. Possible reasons for these fndings are discussed. |
Cita | Cho, M., Yang, J., Mejías Gimeno, J.A. y Kim, S. (2022). Phylogenomic insight into dysploidy, speciation, and plastome evolution of a small Mediterranean genus Reichardia (Cichorieae; Asteraceae). Scientific Reports, 12 (11030). https://doi.org/10.1038/s41598-022-15235-1. |
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