Universität zu Köln

Boyan, George and Ehrhardt, Erica ORCID: 0000-0002-9252-1414 (2019). Dysregulation of axogenesis in the antennal nervous system of the embryonic grasshopper Schistocerca gregaria. Invertebr. Neurosci., 19 (1). HEIDELBERG: SPRINGER HEIDELBERG. ISSN 1439-1104

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Abstract

The antennal nervous system of the grasshopper Schistocerca gregaria features two parallel axon tracts each established early in embryogenesis by discrete pairs of pioneer neurons located at the antennal tip and whose growth cones contact so-called base pioneers en route to the brain. Here we present two antennal phenotypes in which a stereotypic dysregulation of axogenesis in a given tract is observed when only the base pioneer associated with that pathway is missing, consistent with a role for this cell type in guided axogenesis. Dysregulation involves defasciculation and aberrant navigation by pioneer axons resulting in a missing or depleted primordial antennal nerve to the brain. The dysregulated phenotypes reveal that axogenesis in each pathway is regulated independently. Previously unseen discrepancies in the navigational decisions made by pioneer neurons which derive sequentially from the same mother cell demonstrate that these progeny have separate identities. Possible mechanisms for the dysregulated phenotypes are considered.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Boyan, George UNSPECIFIED UNSPECIFIED UNSPECIFIED Ehrhardt, Erica UNSPECIFIED orcid.org/0000-0002-9252-1414 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-156185
DOI:	10.1007/s10158-019-0223-0
Journal or Publication Title:	Invertebr. Neurosci.
Volume:	19
Number:	1
Date:	2019
Publisher:	SPRINGER HEIDELBERG
Place of Publication:	HEIDELBERG
ISSN:	1439-1104
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language PERIPHERAL PIONEER NEURONS; GROWTH; DROSOPHILA; LIPOCALIN; LAZARILLO; PATHWAYS; GUIDANCE Multiple languages Neurosciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/15618