A Database of Drosophila Genes & Genomes

FB2013_03, released May 7th, 2013
 

Allele Dmel\Gr64eMB03533

General Information
SymbolDmel\Gr64eMB03533SpeciesD. melanogaster
NameFlyBase IDFBal0192448
Feature typealleleAssociated geneDmel\Gr64e
Map ( GBrowse ) Untitled Document detailed view FBti0146269 FBti0075706 FBti0126405
Allele class
Mutagen
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Description
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FB2013_03
FB2013_02
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Allele class
Mutagen
Mutations Mapped to the Genome
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Caused by insertion
Cytology
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Statement
Reference
Gr64e[MB03533] mutants show a marked loss of preference for 30% beer against 5mM (as in wild-type). Gr64e[MB03533] flies show a substantially reduced preference for yeast extract and fermented grape. The preference for ripe banana is indistinguishable from wild-type flies. Gr64e[MB03533] mutant flies show virtually no response to 10% glycerol, whereas control flies show a strong response. Gr64e[MB03533] flies have a responsive sugar neuron, as a stimulus of 100mM sucrose elicits a firing rate comparable to that in control flies. L-type sensilla in Gr64e[MB03533] flies lack a response to 10% glycerol. In contrast, mean responses to sucrose, fructose and glucose are as in wild-type. Gr64e[MB03533] flies show greatly reduced proboscis extension responses to glycerol. In feeding preference assays in which populations of flies are presented with 5mM sucrose against varying concentrations of glycerol, wild-type flies show strong preferences for 1% and 10% glycerol.
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Comments
Expression of Gr64e[Scer\UAS.cWa] in sugar taste neurons (under the control of Scer\GAL4[Gr5a.8.5]) restores glycerol sensitivity, although only partial rescue is seen at a 1% glycerol concentration.
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Bloomington
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Reported As
Symbol Synonym
Gr64eMB03533
Name Synonym
Secondary FlyBase IDs
hide References ( 3 )
Research paper
Wisotsky et al., 2011, Nat. Neurosci. 14(12): 1534--1541
Evolutionary differences in food preference rely on Gr64e, a receptor for glycerol. [FBrf0216771]
Jiao et al., 2008, Curr. Biol. 18(22): 1797--1801
Gr64f is required in combination with other gustatory receptors for sugar detection in Drosophila. [FBrf0206328]
Personal communication to FlyBase
Bellen, 2007.4.5, batch731.xml
batch731.xml [FBrf0191801]