Xenopus laevis arose from hybridization of two different frog species millions of years ago, leading to adaptation of the genetic networks controlling early embryonic development and stem cell induction to balance expression between the genes inherited from each ancestor.
Ana Sofia Pinheiro, Vasilios Tsarouhas ... Christos Samakovlis
During tracheal morphogenesis, the scavenger receptor Emp senses and responds to luminal cargo levels by initiating apical membrane endocytosis along the longitudinal tube axis to restrict airway elongation.
Structured illumination microscopy reveals that the hierarchical development of complex honeycomb-like nanostructures within the lumen of some swallowtail butterfly wing scales proceeds via a novel reorganization of disintegrating F-actin bundles.
Hypotheses on brain homologies between insects and vertebrates are tested by comparing gene expression patterns from flies and beetles with those from vertebrates at early neuroectoderm stages.
Igor Y Iskusnykh, Nikolai Fattakhov ... Victor V Chizhikov
LIM-homeodomain transcription factor Lmx1a co-regulates multiple developmental processes in the cortical hem, a major signaling center necessary for hippocampus formation in the mammalian brain.