A Database of Drosophila Genes & Genomes

FB2013_03, released May 7th, 2013
 

Allele Dmel\Liprin-αF

General Information
SymbolDmel\Liprin-αFSpeciesD. melanogaster
NameFlyBase IDFBal0193542
Feature typealleleAssociated geneDmel\Liprin-α
Allele class
Mutagenethyl methanesulfonate
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Description
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FB2013_03
FB2013_02
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Cytology
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Statement
Reference
Liprin-αF mutants exhibit a specific pattern of disruption in the structure of the cartridge, the synaptic unit in the lamina. Some cartridges have either >6 or <6 R cells axons, and some adjacent cartridges fuse. R-cells proliferate normally during the third instar larval stage in Liprin-αF eye-specific mosaics and display normal morphological differentiation during pupal and adult stages. Liprin-αF mutant R cell axons select appropriate ganglion-specific targets in the lamina and the medulla and induce appropriate neuronal differentiation in the lamina target field. These axons also elaborate topographically appropriate maps in each region, with glial cell differentiation in these areas also appearing largely normal. The behaviour of Liprin-αF mutant axons (generated through MARCM) is indistinguishable from wild-type along their trajectories into the lamina plexus, with each axon remaining tightly associated with the axon bundle of its wild-type neighbours from the same ommatidium. However, once within the lamina plexus, unlike wild-type R cells, Liprin-αF mutant R cells typically display specific defects in axon extension toward their targets. Two types of defect are observed. Approximately 64% of Liprin-αF mutant axons completely fail to extend away from the ommatidial bundle, whereas 21% make weak, morphologically abnormal extensions; the remaining axons extend normally. All R cell subtypes are equally affected.
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Statement
Reference
Liprin-αF/Liprin-αE has lethal phenotype, suppressible | partially by CadN[+]/CadNΔ14
Liprin-αF/Liprin-αE has lethal phenotype, suppressible | partially by Lar2127/Lar[+]
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Fails to rescue
Comments
Liprin-αF fails to complement the recessive lethal phenotype of Liprin-α1.
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Research paper
Prakash et al., 2009, Dev. Biol. 336(1): 10--19
Complex interactions amongst N-cadherin, DLAR, and Liprin-alpha regulate Drosophila photoreceptor axon targeting. [FBrf0209258]
Choe et al., 2006, Proc. Natl. Acad. Sci. U.S.A. 103(31): 11601--11606
Liprin-alpha is required for photoreceptor target selection in Drosophila. [FBrf0195369]