Klaus Mummenhoff

Learn More
Brassicaceae is an important family at both the agronomic and scientific level. The family not only includes several model species, but it is also becoming an evolutionary model at the family level. However, resolving the phylogenetic relationships within the family has been problematic, and a large-scale molecular phylogeny in terms of generic sampling and(More)
Life without the mustard family (Brassicaceae) would be a world without many crop species and the model organism Arabidopsis (Arabidopsis thaliana) that has revolutionized our knowledge in almost every field of modern plant biology. Despite this importance, research breakthroughs in understanding family-wide evolutionary patterns and processes within this(More)
The Brassicaceae is a large plant family (338 genera and 3,700 species) of major scientific and economic importance. The taxonomy of this group has been plagued by convergent evolution in nearly every morphological feature used to define tribes and genera. Phylogenetic analysis of 746 nrDNA internal transcribed spacer (ITS) sequences, representing 24 of the(More)
Lepidium sensu stricto (s.s.) (Brassicaceae) (ca. 150 species) is distributed worldwide with endemic species on every continent. It is represented in Australia and New Zealand by 19 and seven native species, respectively. In the present study we used a nuclear ribosomal internal transcribed spacer (ITS) phylogeny in comparison with a cpDNA phylogeny to(More)
In wide-ranging species, the genetic consequences of range shifts in response to climate change during the Pleistocene can be predicted to differ among different parts of the distribution area. We used amplified fragment length polymorphism data to compare the genetic structure of Arabis alpina, a widespread arctic-alpine and afro-alpine plant, in three(More)
 The very recent allopolyploid speciation of Cardamine insueta and Cardamine schulzii is well documented. We used this system for a further understanding of the evolution of the internal transcribed spacers (ITS) of nuclear ribosomal DNA in recently formed hybrids. The ITS sequencing of the two parent species and the alloploid offspring suggests a synopsis(More)
Two intergenic spacers, trnT-trnL and trnL-trnF, and the trnL intron of cpDNA were sequenced to study phylogenetic relationships and biogeography of 73 Lepidium taxa. Insertions/deletions of ≥3 bp (base pairs) provided reliable phylogenetic information whereas indels ≤2 bp, probably originating from slipped-strand mispairing, are prone to parallelism in the(More)
Mesopolyploid whole-genome duplication (WGD) was revealed in the ancestry of Australian Brassicaceae species with diploid-like chromosome numbers (n = 4 to 6). Multicolor comparative chromosome painting was used to reconstruct complete cytogenetic maps of the cryptic ancient polyploids. Cytogenetic analysis showed that the karyotype of the Australian(More)
Like island-endemic taxa, whose origins are expected to postdate the appearance of the islands on which they occur, biome-endemic taxa should be younger than the biomes to which they are endemic. Accordingly, the ages of biome-endemic lineages may offer insights into biome history. In this study, we used the ages of multiple lineages to explore the origin(More)
Understanding the pattern of speciation in a group of plants is critical for understanding its morphological evolution. Lepidium is the genus with the largest variation in floral structure in Brassicaceae, a family in which the floral ground plan is remarkably stable. However, flowers in more than half of Lepidium species have reduced stamen numbers, and(More)