黑腹果蝇种内和种间组合的异质系中外源线粒体DNA传递模式的差异。
Differences in the modes of transmission of foreign mitochondrial DNA in heteroplasmic lines for intra- and interspecific combinations in Drosophila melanogaster.
作者信息
Matsuura E T, Chigusa S I, Niki Y
机构信息
Department of Biology, Ochanomizu University, Tokyo.
出版信息
Jpn J Genet. 1990 Jun;65(3):87-93. doi: 10.1266/jjg.65.87.
The transmission of foreign mitochondrial DNA (mtDNA) was investigated in heteroplasmic lines of Drosophila melanogaster constructed by germ-plasm transplantation and maintained at 19 degrees C. When D. melanogaster was used as a germ-plasm donor, donor mtDNA was retained in all four heteroplasmic lines examined. Individual females were found to be heteroplasmic at the 17th and 18th generations. Donor mtDNA derived from D. mauritiana was found to have decreased in all four heteroplasmic lines examined. It could no longer be found after the 16th generation. This difference in the modes of transmission of donor mtDNA in intra- and interspecific combinations of heteroplasmy indicates that there may be certain species-specific functions which propagate and transmit endogenous mtDNA under the nuclear genome of D. melanogaster.
通过种质移植构建并维持在19摄氏度的黑腹果蝇异质系中，对异源线粒体DNA（mtDNA）的传递进行了研究。当黑腹果蝇用作种质供体时，在所检测的所有四个异质系中均保留了供体mtDNA。在第17代和第18代发现个体雌性为异质体。在所检测的所有四个异质系中，源自毛里求斯果蝇的供体mtDNA均减少。在第16代之后再也找不到它了。异质性种内和种间组合中供体mtDNA传递模式的这种差异表明，可能存在某些物种特异性功能，这些功能在黑腹果蝇的核基因组下传播和传递内源性mtDNA。
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