Genomic Blocks in Aethionema arabicum Support Arabideae as Next Diverging Clade in Brassicaceae

Nora Walden, Thu Phuong Nguyen, Terezie Mandáková, Martin A. Lysak, Michael Eric Schranz*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

8 Citations (Scopus)


The tribe Aethionemeae is sister to all other crucifers, making it a crucial group for unraveling genome evolution and phylogenetic relationships within the crown group Brassicaceae. In this study, we extend the analysis of Brassicaceae genomic blocks (GBs) to Aethionema whereby we identified unique block boundaries shared only with the tribe Arabideae. This was achieved using bioinformatic methods to analyze synteny between the recently updated genome sequence of Aethionema arabicum and other high-quality Brassicaceae genome sequences. We show that compared to the largely conserved genomic structure of most non-polyploid Brassicaceae lineages, GBs are highly rearranged in Aethionema. Furthermore, we detected similarities between the genomes of Aethionema and Arabis alpina, in which also a high number of genomic rearrangements compared to those of other Brassicaceae was found. These similarities suggest that tribe Arabideae, a clade showing conflicting phylogenetic position between studies, may have diverged before diversification of the other major lineages, and highlight the potential of synteny information for phylogenetic inference.

Original languageEnglish
Article number719
JournalFrontiers in Plant Science
Publication statusPublished - 3 Jun 2020


  • Aethionema
  • Arabideae
  • Brassicaceae
  • comparative genomics
  • genomic blocks
  • synteny


Dive into the research topics of 'Genomic Blocks in Aethionema arabicum Support Arabideae as Next Diverging Clade in Brassicaceae'. Together they form a unique fingerprint.

Cite this