Reference Report

Reference
Citation	Marcellini, S., Gibert, J.M., Simpson, P. (2005). achaete, but not scute, is dispensable for the peripheral nervous system of Drosophila. Dev. Biol. 285(2): 545--553. (Export to RIS)
FlyBase ID	FBrf0190143
Publication Type	Research paper
PubMed ID	16084506
PubMed Abstract	The achaete-scute complex of Drosophila has been the focus of extensive genetic and developmental analysis. Of the four genes at this locus, achaete and scute appear to act redundantly to specify the peripheral nervous system. They share cis-regulatory elements and are co-expressed at the same locations. A mutation removing scute activity has been previously described; it causes a loss of some sensory bristles. Thus, when Scute is absent, the activity of achaete allows formation of the remaining bristles. However, all existing achaete mutants are rearrangements affecting regulatory sequences common to both achaete and scute. To determine the level of redundancy between the two genes, we have used a P element approach to generate a null allele of achaete, which leaves scute and all cis-regulatory elements intact. We find that the peripheral nervous system of achaete null mutant larvae and imagos lacks any detectable phenotype. However, when the levels of Scute are limiting, then some sensory organs are missing in achaete mutant flies. achaete and scute are thought to have arisen from a duplication event about 100 Myr ago. The difference between achaete and scute null flies is surprising and raises the question of the retention of both genes during the course of evolution.
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Language of Publication	English
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Publication Type	Journal
Abbreviation	Dev. Biol.
Title	Developmental Biology
Publication Year	1959-
ISBN/ISSN	0012-1606
Data from Reference
Aberrations (3)
	Df(1)sc10-1 Df(1)sc-B57 In(1)ac³
Alleles (7)
	ac³ ac^4G ac^cami ac^rv1 ac^sbm sc^10-1 sc^M6
Constructs (3)
	P{3'GawB} P{?GawB} P{GawB}
Genes (4)
	ac futsch sc y
Insertions (4)
	P{3'GawB}ac^cami P{?GawB}ac^4G P{GawB}ac^sbm P{GawB}CG32816^NP6014
Natural transposons (1)
	P-element