• At this point in time the chicken embryo is a blastoderm (shown in blue). (asu.edu)
  • The first magnification of the embryo shows that the blastoderm cell layers have thickened to form the primitive streak and Hensen's node. (asu.edu)
  • Shimmi, O., Umulis, D., Othmer, H. & O'Connor, M. B. Facilitated transport of a Dpp/Scw heterodimer by Sog/Tsg leads to robust patterning of the Drosophila blastoderm embryo. (nature.com)
  • Then, within the same cytoplasm, syncytial embryonic nuclei undergo a series of rapid, synchronous S and M phases to form the blastoderm embryo. (ens-lyon.fr)
  • By radioactive ooplasmic yolk layer labeling during late oogenesis, we demonstrated that below unincubated quail blastoderms the subgerminal space extends much more peripherally in the cranial then in the caudal direction, where it ends abruptly against Koller's sickle. (naturalsciences.be)
  • Thereafter, epiboly started and a blastoderm covered over the yolk cell at 8 hpf. (bioone.org)
  • The blastoderm covered the yolk cell completely at 15 hpf. (bioone.org)
  • 90%-epiboly: blastoderm margin closing over the yolk plug. (ucsd.edu)
  • In teleosts, the Yolk Syncytial Layer (YSL) is functionally similar to the anterior visceral endoderm found in mice and is required for morphogenesis of the overlying blastoderm. (rice.edu)
  • These data show that the p38 MAPK pathway is essential for maintaining normal yolk cell equilibrium during early development and that without proper cues from the YSL, the blastoderm cannot complete its morphogenetic movements. (rice.edu)
  • During doming, the blastoderm, a tissue composed of surface epithelial cells and inner mesenchymal cells, thins and spreads over the yolk cell. (ist.ac.at)
  • Blockage of translation of aplnra mRNA in zebrafish embryos results in retarded or failed epiboly with the blastoderm apparently disconnected from the nuclei of the yolk syncytial layer. (nih.gov)
  • It consists of a discshaped mass of cells several strata in thickness, the blastoderm, lying closely applied to the yolk. (edu.au)
  • A cavity is formed beneath the blastoderm by the detachment of its central cells from the underlying yolk while ^ the peripheral cells remain attached. (edu.au)
  • The space thus established between the blastoderm and the yolk is termed the segmentation cavity (blastocoele). (edu.au)
  • The marginal area of the blastoderm in which the cells remain undetached from the yolk and closely adherent to it, is called the zone of junction. (edu.au)
  • Only the blastoderm and the immediately underlying yolk are included in the diagram. (edu.au)
  • A blastoderm (germinal disc, blastodisc) is a single layer of embryonic epithelial tissue that makes up the blastula. (wikipedia.org)
  • In chicken eggs, the blastoderm represents a flat disc after embryonic fertilization. (wikipedia.org)
  • The final two layers of the embryoblast are known collectively as the bilaminar embryonic disc as well as the bilaminar blastocyst or bilaminar blastoderm . (primidi.com)
  • and syncytial blastoderm mitotic cell cycle. (nih.gov)
  • 3.In the syncitial blastoderm stage of Drosophila embryos, nuclei move to the periphery and are held in their positions just beneath the plasma membrane by the cytoskeleton. (brilliantessay.com)
  • The YSL and YSL nuclei (YSN) undergo epiboly, and during convergence and extension movements of the blastoderm, the YSN underneath the animal cap also converge and extend underneath the axial hypoblast. (rice.edu)
  • Gastrulation follows blastoderm formation, where the tips of the blastoderm begins the formation of the ectoderm, mesoderm, and endoderm. (wikipedia.org)
  • At the edge of the blastoderm is the site of active migration by most cells. (wikipedia.org)
  • Thus, the reduction in blastoderm surface tension represents the key process coordinating surface cell layer expansion with inner cell layer thinning and spreading during doming. (ist.ac.at)
  • The second rectangular magnification shows the blastoderm cross-sectioned through the primitive streak. (asu.edu)
  • The YSL undergoes dramatic reorganization during early development through processes that mirror the morphogenetic movements of the blastoderm. (rice.edu)
  • I show that this pathway acts in the YSL along with a mixer gene family member, mix-type homeobox gene 1 ( mxtx1 ), to non-autonomously coordinate extracellular matrix deposition and morphogenetic movements in the overlying blastoderm. (rice.edu)
  • In the present study, Heisenberg and his colleague asked how the two tissue movements - surface cell expansion and inner cell intercalation - coordinate their movements during blastoderm spreading. (ist.ac.at)
  • Strikingly, this loosening at the blastoderm surface not only triggers surface cell layer expansion, but also induces inner cell intercalation leading to inner cell layer thinning and spreading. (ist.ac.at)
  • Is the Subject Area "Blastoderm" applicable to this article? (plos.org)
  • Unequal caudocephalic ooplasmic uptake and eccentric formation of the subgerminal space below unincubated quail blastoderms presenting a Koller's sickle. (naturalsciences.be)
  • Home / Associated publications / Belgian Journal of Zoology / Bibliographic References / Unequal caudocephalic ooplasmic uptake and eccentric formation of the subgerminal space below unincubated quail blastoderms presenting a Koller's sickle. (naturalsciences.be)
  • The blastoderm is formed when the oocyte plasma membrane begins cleaving by invagination, creating multiple cells that arrange themselves into an outer sleeve to the blastocoel. (wikipedia.org)
  • Combining theory and experiments, they show that surface cells, by undergoing active expansion, reduce the surface tension of the blastoderm. (ist.ac.at)
  • Our study shows that by reducing its surface tension, the layer of epithelial cells simultaneously drives expansion and thinning of the blastoderm, and so coordinates these two processes. (ist.ac.at)
  • In the center of the blastoderm the cells are smaller. (edu.au)
  • Apical localization of pair-rule transcripts requires 3' sequences and limits protein diffusion in the Drosophila blastoderm embryo. (ox.ac.uk)
  • The peripheral cytoplasm (periplasm) of the Drosophila blastoderm embryo is subdivided into apical and basal compartments by a layer of nuclei. (ox.ac.uk)
  • As a postdoctoral fellow, she focused on using mathematical models to gain insights into various biological systems, including developmental gene regulatory networks of the blastoderm embryo of D. melanogaster, the pathology of liver diseases, calcium dynamics in mitochondria-associated ER membranes, and the epidemic spread of SARS-CoV-2. (nih.gov)
  • A mitotic wave sweeping across a Tribolium blastoderm embryo (from bottom left to top right). (peel-lab.org)
  • Drosophila blastoderm embryo showing expression of the segmentation gene fushi-tarazu (yellow). (peel-lab.org)
  • Translation of hunchback(mat) (hb[mat]) mRNA must be repressed in the posterior of the pre-blastoderm Drosophila embryo to permit formation of abdominal segments. (embl.de)
  • Looking at the future of functional genomics from inside the Drosophila blastoderm -(Meeting Rm 2 at the Centre for Math. (newton.ac.uk)
  • Within otherwise naïve zebrafish blastoderm explants, however, Nodal induces C and E in a largely PCP-dependent manner, arguing that Nodal acts both upstream of and in parallel with PCP during gastrulation to regulate embryonic axis extension cooperatively. (elifesciences.org)
  • This article provides instructions for generating zebrafish blastoderm explants and demonstrates that a single signaling molecule - a Nodal ligand - is sufficient to induce germ layer formation and extension morphogenesis in otherwise naïve embryonic tissues. (nih.gov)
  • Gastrulation follows blastoderm formation, where the tips of the blastoderm begins the formation of the ectoderm, mesoderm, and endoderm. (wikipedia.org)
  • The outer of the two layers of the blastoderm that form during gastrulation, corresponding to primitive ectoderm during gastrulation and to the definitive ectoderm after gastrulation[ZFA]. (mcw.edu)
  • As noted above fandango maternal mutant embryos and kugelkern (kuk) mutant embryos showed remarkably similar blastoderm cellularization defects. (sdbonline.org)
  • Indeed we find no statistically significant differences in the relative timing of any event between the initial cellularization of the blastoderm and hatching. (science20.com)
  • We identified the molecular cascade leading to 25 cell types, the spatial origins of those cell types in the blastoderm, profiled a developmental signaling mutant, and identified cells that change their specification during gastrulation. (nih.gov)
  • In chicken eggs, the blastoderm represents a flat disc after embryonic fertilization. (wikipedia.org)
  • 19. Pluripotency properties of embryonic stem cells isolated from stage X blastoderm of Mazandaran native chicken. (nih.gov)
  • Behaving as a sheet of cells, the blastoderm undergoes complex folding movements generating a multilayered germ band, which soon becomes visibly segmented. (nih.gov)
  • 90%-epiboly: blastoderm margin closing over the yolk plug. (ucsd.edu)
  • Blastoderm degeneration, an early embryonic failure in dwarf single comb white leghorn chickens. (omia.org)