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Báo cáo sinh học: "Selection for acrolein tolerance in Drosophila melanogaster"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Selection for acrolein tolerance in Drosophila melanogaster | 253 Genet. Sei. Evol. 1989 21 253-267 Elsevier INRA Original article Selection for acrolein tolerance in Drosophila melanogaster L.M. Sierra and M.A. Comendador University of Oviedo Department of Genetics 33071 Oviedo Spain received 1 April 1988 accepted 5 January 1989 Summary - Selection at two temperatures 17 C and 24 C to increase the tolerance of D. melanogaster to the toxic action of acrolein was carried out. At both temperatures the tolerance increased progressively as a quantitative trait. No major gene implicated in the tolerance was detected. Associated with the increase of tolerance the lines showed an increase of body size and number of sternopleural bristles a reduction of fitness measured as productivity a lengthening of developmental time and a nearly complete elimination of chromosomal inversions. However an appreciable number of differences between the lines selected at 17 C and 24 C were found. toxic tolerance acrolein selection Drosophila melanogaster associated responses Resume Selection pour la tolerance à I acroleine chez Drosophila melanogaster. On a realise à deux temperatures 17 C et 24 C une selection pour accroitre la tolerance de D. melanogaster à Paction toxique de I acroleine. Aux deux temperatures la tolerance a augmenté progressivementcomme un ẹaraẹtère quantitatif. On n a pas detects de gene majeur impliqué dans la tolerance. Les lignées ont montré associées à la tolerance une augmentation de la taille du corps et du nombre des soies sternopleurales une reduction de faptitude à la reproduction mesurée par la productivité une augmentation du temps de développement et une presque totale elimination des inversions chromosomiques. On a trouvé ainsi un grand nombre de differences entre les lignées sélectionnées à 17 C et 24 C. tolerance à des toxiques - acroléine - selection - Drosophila melanogaster - réponses associées INTRODUCTION Acrolein an unpleasant and troublesome by-product of overheated organic matter is also a useful substance