Variability of esterase patterns in adult flies of the saltans species group of Drosophila (subgenus Sophophora)


Autoria(s): Bernardo, Alessandra Augusta; Bicudo, Hermione Elly Melara de Campos
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/09/2009

Resumo

Esterases are known for their involvement in several physiological processes and high degree of polymorphism, in many organisms. Such polymorphism has been used to characterize species and species groups and to study genetic changes occurred in their evolutionary history. In the present study, the esterase patterns of 19 strains from 10 species representative of the five subgroups of the saltans species group were analyzed using polyacrylamide gel electrophoresis and alpha- and beta- naphthyl acetates as substrates. Fifty-one esterase bands were detected and classified as 31 alpha-esterases, 18 beta-esterases and two alpha/beta-esterases. on the basis of the inhibition patterns using Malathion and eserine sulfate, 34 bands were classified as carboxylesterases, 14 as acethylesterases and three as cholinesterases. Ten gene loci were tentatively established on the basis of data on band position in the gel, substrate preference and inhibition pattern. Twenty bands were species-specific, the remaining being shared by species from the same or different subgroups. Bands detected exclusively in males and bands with a different frequency or degree of expression between sexes were also detected. In the gels prepared for analysis of gene expression in the body parts (head, thorax and abdomen), the degree of expression of the beta-esterases was higher in the thorax, while the alpha-esterases were expressed predominantly in the abdomen and thorax. A global view of the data available at present on the esterases of the species from the saltans group and their degree of polymorphism are presented, as well as the possibility of using some beta-esterases, because of their characteristics in the gels, as markers for species identification.

Formato

111-124

Identificador

http://dx.doi.org/10.1007/s10709-009-9357-z

Genetica. Dordrecht: Springer, v. 137, n. 1, p. 111-124, 2009.

0016-6707

http://hdl.handle.net/11449/40556

10.1007/s10709-009-9357-z

WOS:000268326400011

Idioma(s)

eng

Publicador

Springer

Relação

Genetica

Direitos

closedAccess

Palavras-Chave #Esterase polymorphism of species and subgroups #Esterase gene expression in body parts #Esterase bands as species markers
Tipo

info:eu-repo/semantics/article