Skip to main content

Cardamine maritima group (Brassicaceae) in the amphi-Adriatic area: A hotspot of species diversity revealed by DNA sequences and morphological variation

Buy Article:

$16.27 plus tax (Refund Policy)

Abstract:

The western Balkans, characterized by high rates of endemism, are recognized as one of the most diverse and species-rich areas of Europe. The present study focuses on diploid speciation in a poorly explored ancestral group of the genus Cardamine that is distributed in the amphi-Adriatic territory. Morphological data and DNA sequences (plastid trnL intron and trnL-trnF spacer, ITS of nrDNA, and single-copy nuclear gene CHS) were used to address taxonomic, phylogenetic and evolutionary questions. Recognition of several previously described, but recently not accepted narrow endemics is supported (C. fialae, C. rupestris, C. serbica). Cardamine maritima s.str. is segregated into three distinct entities, which were given species rank. A new taxonomic concept of the group is proposed, including identification key, synonymy, typifications, C. montenegrina sp. nov. and C. adriatica nom. nov. Chloroplast data indicate radiation of the ancestral lineage into a series of distinct endemic species; lack of resolution at internal nodes and incongruence with nuclear phylogenies suggest that this radiation occurred rapidly. Nuclear data indicate more recent hybridization events. It is assumed that glacial-induced local-scale and altitudinal migrations along the Balkan coastline and in adjacent massifs caused contacts between previously isolated populations, resulting in occasional interspecific gene-flow. Trans-Adriatic contacts and gene exchange are also suggested.

Keywords: CARDAMINE; CHALCONE SYNTHASE; MORPHOMETRICS; NUCLEAR RIBOSOMAL ITS; TRNL-TRNF; WESTERN BALKANS

Document Type: Research Article

Affiliations: 1: Institute of Botany, Slovak Academy of Sciences, Dúbravská cesta 9, 845 23 Bratislava, Slovak Republic 2: Institute of Botany, Slovak Academy of Sciences, Dúbravská cesta 9, 845 23 Bratislava, Slovak Republic; Department of Botany, Charles University, Benátská 2, 128 01 Praha 2, Czech Republic

Publication date: 2010-02-01

  • Access Key
  • Free ContentFree content
  • Partial Free ContentPartial Free content
  • New ContentNew content
  • Open Access ContentOpen access content
  • Partial Open Access ContentPartial Open access content
  • Subscribed ContentSubscribed content
  • Partial Subscribed ContentPartial Subscribed content
  • Free Trial ContentFree 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