‘Missing link’ speciesCapsella orientalisandCapsella thracicaelucidate evolution of model plant genusCapsella(Brassicaceae)

• DOI: 10.1111/j.1365-294x.2012.05460.x
• Publication Date: 2012-01-31T06:07:51Z
• Authors: HERBERT HURKA; NIKOLAI FRIESEN; DMITRY A. GERMAN; ANDREAS FRANZKE; BARBARA NEUFFER
• Keywords: Brassicaceae

Abstract To elucidate the evolutionary history of genus Capsella , we included hitherto poorly known species C. orientalis and thracica into our studies together with grandiflora rubella bursa‐pastoris . We sequenced ITS four loci noncoding cpDNA regions ( trn L – F, rps 16, H psb A Q 16). Sequence data were evaluated parsimony Bayesian analyses. Divergence time estimates carried out software package BEAST. also performed isozyme, cytological, morphological biogeographic studies. (self‐compatible, SC; 2 n = 16) forms a clade (eastern lineage) (SC; 32), which is sister (western to (self‐incompatible, SI; an autopolyploid multiple origin, whereas Bulgarian endemic 32) allopolyploid emerged from interspecific hybridization between The common ancestor two lineages was diploid SI, its distribution ranged eastern Europe central Asia, predominantly confined steppe‐like habitats. Biogeographic dynamics during Pleistocene caused geographic genetic subdivisions within giving rise extant lineages.