scholarly journals Development and organization of the larval nervous system in Phoronopsis harmeri: new insights into phoronid phylogeny

2014 ◽  
Vol 11 (1) ◽  
pp. 3 ◽  
Author(s):  
Elena N Temereva ◽  
Eugeni B Tsitrin
Keyword(s):  
Nervous System ◽  
Larval Nervous System ◽  
Phoronopsis Harmeri

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.

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

The nervous system of a pilidium larva: evidence from electron microscope reconstructions

1985 ◽  
Vol 63 (8) ◽  
pp. 1909-1916 ◽  
Author(s):  
T. C. Lacalli ◽  
J. E. West
Keyword(s):  
Nervous System ◽  
Electron Microscope ◽  
Similar Type ◽  
Ciliary Band ◽  
Nerve Fibres ◽  
Larval Nervous System ◽  
Marginal Band ◽  
Friday Harbor ◽  
And Behavior ◽  
First Time

The principal ultrastructural features of a pilidium larva from Friday Harbor (pilidium A, unidentified as to species) are summarized and, based on electron microscope reconstructions, the larval nervous system is described for the first time. Ciliary effectors in the larva include the marginal ciliary band, which is drawn out to form a small accessory ridge at each of the junctions between lobes, and a pair of suboral (buccal) ridges, one on either side of the stomodeum, that run between the mouth and marginal band. The nervous system consists of a small intratrochal nerve supplying the marginal band, an oral nerve that encircles the mouth at the junction of stomodeum and stomach, and a pair of nerves connecting these that run beneath the suboral ridges. The nerve fibres appear to arise from uniciliate cells in the marginal band and the suboral region. The organization, innervation, and behavior of pilidium A are discussed briefly with reference to Müller's larva, a related larva with a similar type of trochal innervation.

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