Ground plan of the larval nervous system in phoronids: Evidence from larvae of viviparous phoronid

2017 ◽  
Vol 19 (4-5) ◽  
pp. 171-189 ◽  
Author(s):  
Elena N. Temereva
Keyword(s):  
Nervous System ◽  
Ground Plan ◽  
Larval Nervous System

scholarly journals Partitioning of N-Ethylmaleimide-Sensitive Fusion (NSF) Protein Function in Drosophila melanogaster: dNSF1 Is Required in the Nervous System, and dNSF2 Is Required in Mesoderm

Genetics ◽  
2001 ◽  
Vol 158 (1) ◽  
pp. 265-278
Author(s):  
Jessica A Golby ◽  
Leigh Anna Tolar ◽  
Leo Pallanck
Keyword(s):  
Nervous System ◽  
Protein Function ◽  
Ectopic Expression ◽  
Drosophila Genome ◽  
Loss Of Function ◽  
Stage Of Development ◽  
Expression Studies ◽  
Larval Nervous System ◽  
Constitutive Secretion ◽  
Temporal And Spatial

Abstract The N-ethylmaleimide-sensitive fusion protein (NSF) promotes the fusion of secretory vesicles with target membranes in both regulated and constitutive secretion. While it is thought that a single NSF may perform this function in many eukaryotes, previous work has shown that the Drosophila genome contains two distinct NSF genes, dNSF1 and dNSF2, raising the possibility that each plays a specific secretory role. To explore this possibility, we generated mutations in the dNSF2 gene and used these and novel dNSF1 loss-of-function mutations to analyze the temporal and spatial requirements and the degree of functional redundancy between dNSF1 and dNSF2. Results of this analysis indicate that dNSF1 function is required in the nervous system beginning at the adult stage of development and that dNSF2 function is required in mesoderm beginning at the first instar larval stage of development. Additional evidence suggests that dNSF1 and dNSF2 may play redundant roles during embryonic development and in the larval nervous system. Ectopic expression studies demonstrate that the dNSF1 and dNSF2 gene products can functionally substitute for one another. These results indicate that the Drosophila NSF proteins exhibit similar functional properties, but have evolved distinct tissue-specific roles.

Aberrant Nerve Fibres in Human Development

Development ◽  
1960 ◽  
Vol 8 (2) ◽  
pp. 119-129
Author(s):  
J. D. Boyd ◽  
A. F. W. Hughes
Keyword(s):  
Nervous System ◽  
Human Development ◽  
Nerve Fibre ◽  
Early Years ◽  
Developmental Studies ◽  
Nerve Fibres ◽  
Ground Plan ◽  
Technical Developments ◽  
Previous Decade ◽  
Ramón Y Cajal

In the early years of this century debate concerning the development of nerve fibres became more intense. During the previous decade, following the developmental studies of His (1883, 1886) and the early embryological studies of Ramon y Cajal (1890), the neurone theory as proclaimed by Waldeyer in 1891 seemed assured of victory; but when, with Apáthy and Bethe, new technical developments diverted attention from the whole neurone to its apparent constituents, the neurofibrillae, the simple concept of the outgrowth of the nerve fibre became enmeshed in complexity. Methods for their impregnation with silver were soon elaborated (Bielschowsky, 1904; Ramon y Cajal, 1903), and Held (1907) affirmed that a network of neurofibrillae preceded the appearance of the definitive nerve process. This claim became associated with the much older views of Hensen (1864, 1876) that protoplasmic strands were the forerunners of the nerve fibres and constituted a ground plan for the later development of the peripheral nervous system.

Bicuculline-insensitive GABA-gated Cl? channels in the larval nervous system of the moth Manduca sexta

2003 ◽  
Vol 5 (1) ◽  
pp. 37-43 ◽  
Author(s):  
David B. Sattelle ◽  
Donglin Bai ◽  
Hong Hong Chen ◽  
Jacqueline M. Skeer ◽  
Steven D. Buckingham ◽  
...  
Keyword(s):  
Nervous System ◽  
Manduca Sexta ◽  
Larval Nervous System ◽  
Cl Channels

The Larval Apical Organ in the Holothuroid Chiridota gigas (Apodida): Inferences on Evolution of the Ambulacrarian Larval Nervous System

2006 ◽  
Vol 211 (2) ◽  
pp. 95-100 ◽  
Author(s):  
Maria Byrne ◽  
Mary A. Sewell ◽  
Paulina Selvakumaraswamy ◽  
Thomas A. A. Prowse
Keyword(s):  
Nervous System ◽  
Apical Organ ◽  
Larval Nervous System
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