Drosopoulou E, Konstantopoulou I, Scouras Z G
Department of Genetics, Development and Molecular Biology, School of Biology, Faculty of Science, Aristotle University of Thessaloniki (AUTH), Thessaloniki, GR-54006 Greece.
Chromosoma. 1996 Aug;105(2):104-10. doi: 10.1007/BF02509520.
The hsp70, hsp83, hsromega, and the small heat shock protein genes were mapped on the polytene chromosomes of six species, representative of the geographical distribution of the Drosophila montium subgroup of the melanogaster species group. In addition, based on hybridization conditions, the putative locus of the hsp68 gene is given. In contrast to the situation in the melanogaster subgroup species, the hsp70 locus is single in the montium species. The hsp83, hsromega and the small hsp loci are also single in the montium genomes studied here, a common feature of all Drosophila species. Among the hsp genes studied, the small hsp genes and the hsromega-homologous sequences exhibit a higher degree of divergence between the melanogaster and the montium subgroups. Our results support the idea that the montium subgroup species has a genome organization closer to that of the common ancestor compared with the melanogaster subgroup species.
热休克蛋白70（hsp70）、热休克蛋白83（hsp83）、热休克蛋白ω（hsromega）和小热休克蛋白基因被定位在六个物种的多线染色体上，这些物种代表了黑腹果蝇种组蒙氏果蝇亚组的地理分布。此外，根据杂交条件，给出了热休克蛋白68（hsp68）基因的推定位点。与黑腹果蝇亚组物种的情况不同，hsp70基因座在蒙氏果蝇物种中是单一的。hsp83、hsromega和小热休克蛋白基因座在我们研究的蒙氏果蝇基因组中也是单一的，这是所有果蝇物种的共同特征。在所研究的热休克蛋白基因中，小热休克蛋白基因和hsromega同源序列在黑腹果蝇亚组和蒙氏果蝇亚组之间表现出更高程度的差异。我们的结果支持这样一种观点，即与黑腹果蝇亚组物种相比，蒙氏果蝇亚组物种的基因组组织更接近共同祖先。
