Hybrid Dysgenesis in DROSOPHILA MELANOGASTER: A Syndrome of Aberrant Traits Including Mutation, Sterility and Male Recombination.
Hybrid Dysgenesis in DROSOPHILA MELANOGASTER: A Syndrome of Aberrant Traits Including Mutation, Sterility and Male Recombination.
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发表时间：
1977-08
期刊：
影响因子：
3.3
通讯作者：
M. G. Kidwell;J. F. Kidwell;J. Sved
中科院分区：
文献类型：
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作者：
M. G. Kidwell;J. F. Kidwell;J. Sved
在黑腹果蝇中描述了一种相关异常性状综合征。这些特征中的六个，突变，不育，雄性重组，传输比失真，染色体畸变和本地增加女性重组，以前已被报道。第七个性状，不分离，是第一次描述。我们所研究的所有性状在F（1）杂种中均不一致。我们目前的证据表明，至少有四个特征是没有发现在非杂交。因此，我们提出了名称杂交发育不全来描述这种综合征。根据产生杂种发育不全所需的父本或母本贡献，将测试菌株划分为两种类型，指定为P和M。这种分类似乎适用于美国和澳大利亚境内的菌株杂交，以及两国菌株之间的杂交。最近从自然群体中收集的菌株通常为P型，而具有较长实验室历史的菌株通常为M型。然而，在20世纪60年代从野外收集的一组六个菌株被明确地平均分为P型和M型。后一组的二分法提出了关于物种形成可能影响的有趣问题。温度往往对杂种发育不全的表现有关键影响。高的F（1）发育温度往往会增加不育性的表达，有时达到极端水平。相反，低的发育温度往往会抑制某些不良性状的表达。杂种发育不全对实验室实验有潜在的重要实际意义。结果表明，应小心行使在规划涉及应变交叉实验。
A syndrome of associated aberrant traits is described in Drosophila melanogaster. Six of these traits, mutation, sterility, male recombination, transmission ratio distortion, chromosomal aberrations and local increases in female recombination, have previously been reported. A seventh trait, nondisjunction, is described for the first time. All of the traits we have examined are found nonreciprocally in F(1) hybrids. We present evidence that at least four of the traits are not found in nonhybrids. Therefore we have proposed the name hybrid dysgenesis to describe this syndrome.-A partition of tested strains into two types, designated P and M, was made according to the paternal or maternal contribution required to produce hybrid dysgenesis. This classification seems to hold for crosses of strains from within the United States and Australia, as well as for crosses between strains from the two countries. Strains collected recently from natural populations are typically of the P type and those having a long laboratory history are generally of the M type. However, a group of six strains collected from the wild in the 1960's are unambiguously divided equally between the P and M types. The dichotomy of this latter group raises interesting questions concerning possible implications for speciation.-Temperature often has a critical effect on the manifestation of hybrid dysgenesis. High F(1 ) developmental temperatures tend to increase the expression of sterility, sometimes to extreme levels. Conversely, low developmental temperatures tend to inhibit the expression of some dysgenic traits.-There are potentially important practical implications of hybrid dysgenesis for laboratory experimentation. The results suggest that care should be exercised in planning experiments involving strain crosses.