2012/10/01 by Tatiana Arias, J. Chris Pires · 1 citation
Agricultural and Biological Sciences · Biochemistry, Genetics and Molecular Biology · #Plant Ecology and Taxonomy Studies #Natural product bioactivities and synthesis #Plant Diversity and Evolution
paper · doi:10.1002/tax.615005
openalex publication_date 2012/10/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/05/21
Abstract Brassicas boast an enormous diversity of economically important products. Strikingly, relationships among main lineages are still unknown. The phylogeny of the tribe Brassiceae (Brassicaceae) was reconstructed for 89 species using four plastid regions (rpl32trnL, atpIatpH,psbDtrnT,ycf6psbM). Representatives of almost all genera were sampled, covering the entire natural range of the tribe from Central Asia to the western Mediterranean, including four previously unsampled genera (Ammosperma,Eremophyton,Fezia,Pseudofortuynia). Phylogenetic analysis recovered eight wellsupported clades in the tribe including a new African clade (Henophyton) comprised of genera that have not been previously sampled. Relationships within and between the eight major clades are strongly supported for the first time. The earliestdivergent lineages in the tribe are the clades Vella and Zilla. Henophyton is sister to the clade that includes the lineages Nigra, Crambe, Cakile, Savignya, and Oleracea. Core Brassiceae—a new clade defined here—is comprised of two subclades: (1) Nigra, Crambe, and Cakile and (2) Savignya and Oleracea. Within the Oleracea lineage, a new Core Oleracea clade is defined. Several genera were confirmed to be polyphyletic or paraphyletic, including Brassica, Erucastrum, Sinapis, Diplotaxis and Cakile. Economically important species belonging to the genera Brassica were primarily distributed across the two most speciesrich lineages, Nigra or Oleracea. Collectively, the finding of these novel clades has numerous taxonomic implications.