Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/138
Type: Artigo de periódico
Title: Alcohol dehydrogenase activities and ethanol tolerance in Anastrepha (Diptera, Tephritidae) fruit-fly species and their hybrids
Author: CARVALHO, Eneas
SOLFERINI, Vera Nisaka
MATIOLI, Sergio Russo
Abstract: The ADH (alcohol dehydrogenase) system is one of the earliest known models of molecular evolution, and is still the most studied in Drosophila. Herein, we studied this model in the genus Anastrepha (Diptera, Tephritidae). Due to the remarkable advantages it presents, it is possible to cross species with different Adh genotypes and with different phenotype traits related to ethanol tolerance. The two species studied here each have a different number of Adh gene copies, whereby crosses generate polymorphisms in gene number and in composition of the genetic background. We measured certain traits related to ethanol metabolism and tolerance. ADH specific enzyme activity presented gene by environment interactions, and the larval protein content showed an additive pattern of inheritance, whilst ADH enzyme activity per larva presented a complex behavior that may be explained by epistatic effects. Regression models suggest that there are heritable factors acting on ethanol tolerance, which may be related to enzymatic activity of the ADHs and to larval mass, although a pronounced environmental effect on ethanol tolerance was also observed. By using these data, we speculated on the mechanisms of ethanol tolerance and its inheritance as well as of associated traits.
Subject: Alcohol dehydrogenase
Anastrepha
Hybrids
Ethanol tolerance
Tephritidae
Country: Brasil
Editor: Sociedade Brasileira de Genética
Citation: Genetics and Molecular Biology, v.32, n.1, p.177-185, 2009
Rights: aberto
Identifier DOI: 10.1590/S1415-47572009005000012
Address: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000100027
http://www.scielo.br/pdf/gmb/v32n1/2007-276.pdf
Date Issue: 2009
Appears in Collections:IB - Artigos e Materiais de Revistas Científicas

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