4 Works

Data from: Less is more: selective advantages can explain the prevalent loss of biosynthetic genes in bacteria

Glen D’Souza, Silvio Waschina, Samay Pande, Katrin Bohl, Christoph Kaleta, Christian Kost & Glen D'Souza
Bacteria that have adapted to nutrient-rich, stable environments are typically characterized by reduced genomes. The loss of biosynthetic genes frequently renders these lineages auxotroph, hinging their survival on an environmental uptake of certain metabolites. The evolutionary forces that drive this genome degradation, however, remain elusive. Our analysis of 949 metabolic networks revealed auxotrophies are likely highly prevalent in both symbiotic and free-living bacteria. To unravel whether selective advantages can account for the rampant loss of...

Data from: Phylogenomics resolves the timing and pattern of insect evolution

Bernhard Misof, Shanlin Liu, Karen Meusemann, Ralph S. Peters, Alexander Donath, Christoph Mayer, Paul B. Frandsen, Jessica Ware, Tomas Flouri, Rolf G. Beutel, Oliver Niehuis, Malte Petersen, Fernando Izquierdo-Carrasco, Torsten Wappler, Jes Rust, Andre J. Aberer, Ulrike Aspöck, Horst Aspöck, Daniela Bartel, Alexander Blanke, Simon Berger, Alexander Böhm, Thomas Buckley, Brett Calcott, Junqing Chen … & Xin Zhou
Insects are the most speciose group of animals, but the phylogenetic relationships of many major lineages remain unresolved. We inferred the phylogeny of insects from 1478 protein-coding genes. Phylogenomic analyses of nucleotide and amino acid sequences, with site-specific nucleotide or domain-specific amino acid substitution models, produced statistically robust and congruent results resolving previously controversial phylogenetic relations hips. We dated the origin of insects to the Early Ordovician [~479 million years ago (Ma)], of insect flight...

Data from: Trunk orientation causes asymmetries in leg function in small bird terrestrial locomotion

Emanuel Andrada, Christian Rode, Yefta Sutedja, John A. Nyakatura & Reinhard Blickhan
In contrast to the upright trunk in humans, trunk orientation in most birds is almost horizontal (pronograde). It is conceivable that the orientation of the heavy trunk strongly influences the dynamics of bipedal terrestrial locomotion. Here we analyze for the first time the effects of a pronograde trunk orientation on leg function and stability during bipedal locomotion. For this, we first inferred the leg function and trunk control strategy applied by a generalized small bird...

Data from: Vitamin supplementation by gut symbionts ensures metabolic homeostasis in an insect host

Hassan Salem, Eugen Bauer, Anja S. Strauss, Heiko Vogel, Manja Marz & Martin Kaltenpoth
Despite the demonstrated functional importance of gut microbes, our understanding of how animals regulate their metabolism in response to nutritionally beneficial symbionts remains limited. Here, we elucidate the functional importance of the African cotton stainer's (Dysdercus fasciatus) association with two actinobacterial gut symbionts and subsequently examine the insect's transcriptional response following symbiont elimination. In line with bioassays demonstrating the symbionts' contribution towards host fitness through the supplementation of B vitamins, comparative transcriptomic analyses of genes...

Registration Year

  • 2014
    4

Resource Types

  • Dataset
    4

Affiliations

  • Friedrich Schiller University Jena
    4
  • Max Planck Institute for Chemical Ecology
    2
  • University of Hamburg
    1
  • Zoological Research Museum Alexander Koenig
    1
  • Johns Hopkins University
    1
  • Ehime University
    1
  • Australian National University
    1
  • University of Memphis
    1
  • Heidelberg Institute for Theoretical Studies
    1
  • Naturhistorisches Museum
    1