Corpus ID: 45849370

Midline lineages in grasshopper produce neuronal siblings with asymmetric expression of Engrailed.

@article{Jia2002MidlineLI,
  title={Midline lineages in grasshopper produce neuronal siblings with asymmetric expression of Engrailed.},
  author={X. Jia and M. Siegler},
  journal={Development},
  year={2002},
  volume={129 22},
  pages={
          5181-93
        }
}
The median neuroblast lineage of grasshopper has provided a model for the development of differing neuronal types within the insect central nervous system. According to the prevailing model, neurons of different types are produced in sequence. Contrary to this, we show that each ganglion mother cell from the median neuroblast produces two neurons of asymmetric type: one is Engrailed positive (of interneuronal fate); and one is Engrailed negative (of efferent fate). The mature neuronal… Expand
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References

SHOWING 1-10 OF 29 REFERENCES
The grasshopper median neuroblast is a multipotent progenitor cell that generates glia and neurons in distinct temporal phases
  • B. Condron, K. Zinn
  • Biology, Medicine
  • The Journal of neuroscience : the official journal of the Society for Neuroscience
  • 1994
TLDR
This report analyzes the development of the CNS midline in the grasshopper embryo, focusing on the median neuroblast (MNB) cluster, which contains the majority of midline neurons and finds that this neuroblast is actually a multipotent progenitor cell. Expand
Neuronal determination during embryonic development of the grasshopper nervous system.
TLDR
A common pattern of neuronal determination in the grasshopper and possibly all insect embryos is suggested, with a hierarchy of fates with one fate dominant over the other. Expand
engrailed controls glial/neuronal cell fate decisions at the midline of the central nervous system
TLDR
It is shown that the segment-polarity gene engrailed, which encodes a homeodomain protein, controls these decisions within an insect CNS lineage, and is required for execution of the decision between the glial and neuronal fates. Expand
Neurons of the median neuroblast lineage of the grasshopper: A population study of the efferent DUM neurons
TLDR
A group of lineally related neurons in the grasshopper was studied to determine the number of efferent neuron in the group and their morphological types, and 19 efferent neurons were identified, named according to the lateral nerves containing their axons. Expand
The Embryonic Central Nervous System Lineages ofDrosophila melanogaster
TLDR
The vast majority of cell lineages in the embryonic ventral nerve cord (thorax, abdomen) are now known and the previously identified neurons and most glial cells are now linked to certain lineages and, thus, to particular NBs. Expand
Development of segment specificity in identified lineages of the grasshopper CNS
  • K. Thompson, M. Siegler
  • Biology, Medicine
  • The Journal of neuroscience : the official journal of the Society for Neuroscience
  • 1993
TLDR
The hypothesis that progeny fated to become certain neuronal types are selectively removed from the two MNB lineages is supported: intersegmental interneurons from T3 and efferent neurons and local interneURons from A1. Expand
Engrailed protein is expressed in interneurons but not motor neurons of the dorsal unpaired median group in the adult grasshopper
TLDR
The differential expression of En in the embryo and its continued expression in the adult nervous system suggest a role in the development and maintenance of neuronal phenotype. Expand
Early events in insect neurogenesis. I. Development and segmental differences in the pattern of neuronal precursor cells.
TLDR
Three aspects of neurogenesis are examined, including the morphological changes associated with the differentiation of neuronal precursor cells and nonneuronal support cells and the characteristic temporal sequence of differentiation in the stereotyped pattern of NBs. Expand
Embryogenesis of an insect nervous system II: a second class of neuron precursor cells and the origin of the intersegmental connectives.
TLDR
The intersegmental connectives in the locust central nervous system are initiated by the axons of early differentiating neuron trios, and the standard pattern of axon outgrowth in different segments suggest that the nervous system develops to a common, segmentally repeated programme. Expand
Clonal analysis of Drosophila embryonic neuroblasts: neural cell types, axon projections and muscle targets.
TLDR
Novel conclusions are made that neuroblasts at similar dorsoventral positions, but not anteroposterior positions, often generate similar cell lineages, and that clones very late in embryonic development, which reveals novel cell types and axon/dendrite complexity, are analyzed. Expand
...
1
2
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