title: [A comparative analysis of the expression of the betaEst2 gene in the ontogeny of the Drosophila virilis group].
abstract: We studied expression of gene betaEst2 controlling synthesis of non-specific carboxylesterase (EC 3.1.1.1) in ontogenesis of Drosophila group virilis. It was established that in all sibling species of this group, except D. lummei, beta-esterase is found at all developmental stages: in larvae, pupae, and imago. In D. lummei beta-esterase is found at the imago stage only. Analysis of 17 laboratory strains of D. lummei of various geographical origin has shown that the absence of the gene betaEst2 expression in larvae and pupae can be considered a species specific diagnostic feature. Comparison of esterase phenotypes in the progeny of crosses between D. lummei and other species has shown that the D. lummei gene is not expressed in hybrid larvae and pupae. Hence, species specific expression of gene betaEst2 in ontogenesis of D. lummei is due to cis-acting regulatory system.
authors.forename: E V
authors.initials: EV
authors.lastname: Poliakova
authors.forename: S V
authors.initials: SV
authors.lastname: Ambrosova
authors.forename: L I
authors.initials: LI
authors.lastname: Korochkin
mesh_terms: D000818:Animals; D043182:Carboxylesterase; D002265:Carboxylic Ester Hydrolases / Q000235:genetics*; D004330:Drosophila / Q000201:enzymology / Q000235:genetics* / Q000254:growth & development; D015971:Gene Expression Regulation, Enzymologic / Q000235:genetics*; D007814:Larva; D010641:Phenotype; D011679:Pupa; D013045:Species Specificity
chemical_list: D002265:Carboxylic Ester Hydrolases; D043182:Carboxylesterase