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Abstract Detail


Principles of crucifer evolution

Koch, Marcus [1], Karl, Robert [1].

Anatolia and Central Asia as a craddle of crucifer biodiversity: Arabis and Aubrieta as an example.

The high mountains in southern Anatolia and the eastern Mediterranean are assumed to play a major role as a primary center of genetic diversity and species richness in Eurasia. We tested this hypothesis by focusing on the wide-spread perennial arctic-alpine Arabis alpina and its sympatrically distributed closest relatives in the eastern Mediterranean and also focusing on the genus Aubrieta. It is exemplified that Pleistocene climate fluctuations produced local altitudinal range-shifts among mountain glacial survival areas, resulting not only in the accumulation of intra-specific genotype diversity and the formation of numerous local species. We also show that closest sister groups of the perennial taxa are exclusively annuals/winter annuals which diverged prior to Pleistocene climatic fluctuations during the colonization of the lowland Mediterranean landscape. These findings highlights that Anatolia is a center of species richness but also a center for life-history diversification.

Broader Impacts:


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1 - Centre for Organismal Studies Heidelberg, Heidelberg University, Im Neuenheimer Feld 345, Heidelberg

Keywords:
Anatolia
Arabis
Aubrieta
Life-history evolution
speciation.

Presentation Type: Symposium or Colloquium Presentation
Session: C4
Location: Delaware C/Hyatt
Date: Tuesday, July 10th, 2012
Time: 4:15 PM
Number: C4011
Abstract ID:170


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