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Journal of Botany
Volume 2010 (2010), Article ID 504613, 8 pages
Research Article

Comparative Analysis of Growth, Genome Size, Chromosome Numbers and Phylogeny of Arabidopsis thaliana and Three Cooccurring Species of the Brassicaceae from Uzbekistan

1Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung Gatersleben (IPK), Corrensstraße 3, 06466 Gatersleben, Germany
2Institut für Biologie/Geobotanik und Botanischer Garten, Martin-Luther-Universität Halle-Wittenberg, Am Kirchtor 3, D-06466 Halle, Germany
3Saaten-Union Biotec GmbH, Betriebsstätte Biotechpark Gatersleben, Am Schwabeplan 6, D-06466 Gatersleben, Germany

Received 1 December 2009; Accepted 25 February 2010

Academic Editor: Johann Greilhuber

Copyright © 2010 Matthias H. Hoffmann et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Contrary to literature data Arabidopsis thaliana was rarely observed in Middle Asia during a collection trip in 2001. Instead, three other Brassicaceae species were frequently found at places where A. thaliana was expected. To reveal reasons for this frequency pattern, we studied chromosome numbers, genome sizes, phylogenetic relationships, developmental rates, and reproductive success of A. thaliana, Olimarabidopsis pumila, Arabis montbretiana, and Arabis auriculata from Uzbekistan in two temperature treatments. There are little but partially significant differences between phenotypes. All studied species have very small genomes. The 1Cx-values of different genotypes within the sampled species are correlated with altitude. Developmental rates are also correlated with 1Cx-values. In our growth experiments, Arabidopsis had high seed sterility at higher temperature, which might be one reason for the rarity of A. thaliana in Middle Asia.