Species often include multiple ecotypes that are adapted to different environments.
However, it is unclear how ecotypes arise and how their distinctive combinations of adaptive …

Due to the endosymbiotic origin of organelles, a pattern of coevolution and coadaptation
between organellar and nuclear genomes is required for proper cell function. In this review …

Gene tree discordance in large genomic data sets can be caused by evolutionary processes
such as incomplete lineage sorting and hybridization, as well as model violation, and errors …

 Abstract Subfamily Caesalpinioideae with ca. 4,600 species in 152 genera is the second-
largest subfamily of legumes (Leguminosae) and forms an ecologically and economically …

Phylogenomic data from a rapidly increasing number of studies provide new evidence for
resolving relationships in recently radiated clades, but they also pose new challenges for …

Angiosperms (flowering plants) are by far the most diverse land plant group with over
300,000 species. The sudden appearance of diverse angiosperms in the fossil record was …

Background Deep-branching phylogenetic relationships are often difficult to resolve
because phylogenetic signals are obscured by the long history and complexity of …

Sunflowers of the genus Helianthus are models for hybridization research and contain three
of the best-studied examples of homoploid hybrid speciation. To understand a broader …

Using DNA barcoding for species identification remains challenging for many plant groups.
New sequencing approaches such as complete plastid genome sequencing may provide …

The advent of genomic methods allows us to revisit the evolutionary history of organismal
groups for which robust phylogenies are still lacking, particularly in species complexes that …