Skip to main content

A fully resolved chloroplast phylogeny of the brassica crops and wild relatives (Brassicaceae: Brassiceae): Novel clades and potential taxonomic implications

Buy Article:

$14.44 plus tax (Refund Policy)

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 (pl32-trnL, atpI-atpH, psbD-trnT, ycf6-psbM). 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 well-supported 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 earliest-divergent 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 species-rich lineages, Nigra or Oleracea. Collectively, the finding of these novel clades has numerous taxonomic implications.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Keywords: BRASSICA; BRASSICA OLERACEA; BRASSICACEAE; BRASSICEAE; CRUCIFERAE; HENOPHYTON; MUSTARDS; PHYLOGENETICS; U TRIANGLE

Document Type: Research Article

Affiliations: 1: Division of Biological Sciences, University of Missouri, 311 Bond Life Sciences Center, 1201 Rollins Street, Columbia, Missouri 65211, U.S.A.;, Email: [email protected] 2: Division of Biological Sciences, University of Missouri, 311 Bond Life Sciences Center, 1201 Rollins Street, Columbia, Missouri 65211, U.S.A.

Publication date: 2012-10-11

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more