The distribution of male-transmitted and female-transmitted mitochondrial DNA types in somatic tissues of blue mussels : implications for the operation of doubly uniparental inheritance of mitochondrial DNA
The distribution of male-transmitted and female-transmitted mitochondrial DNA types in somatic tissues of blue mussels : implications for the operation of doubly uniparental inheritance of mitochondrial DNA
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DOI：
10.1139/g98-081
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发表时间：
1998-12
期刊：
影响因子：
3.1
通讯作者：
M. Garrido-Ramos;D. Stewart;B. W. Sutherland;E. Zouros
中科院分区：
文献类型：
--
作者：
M. Garrido-Ramos;D. Stewart;B. W. Sutherland;E. Zouros
对紫贻贝（Mytilus edulis）雌雄个体几种体细胞组织的线粒体DNA（mtDNA）含量进行了测定。从线粒体DNA的双单亲遗传（DUI）模式，这是该属的特点，预期在男性生殖腺的mtDNA的优势类型是男性传播的M型。与此相反，所有男性体细胞组织占主导地位的女性传播的F型。M型偶尔可以在少数雌性个体的一个或另一个组织中检测到。这些发现对线粒体DNA的双单亲遗传的操作有几个影响，其中最重要的是（i）M基因组相对于F基因组不具有无条件的复制优势，（ii）与“男性化”相反，（F分子承担M基因组作用的过程）“女性化”（M分子承担F基因组角色的过程）可能是一种罕见但并非不可能的现象。关键词：线粒体基因组
We have examined the mitochondrial DNA (mtDNA) content of several somatic tissues from male and female individuals of the blue mussel, Mytilus edulis. As expected from the mode of doubly uniparental inheritance (DUI) of mtDNA that is characteristic of this genus, the dominant type of mtDNA in male gonads was the male-transmitted M type. In contrast, all male somatic tissues were dominated by the female-transmitted F type. The M type could occasionally be detected in one or another tissue of a few female individuals. The findings have several implications for the operation of doubly uniparental inheritance of mitochondrial DNA, among which the most important are (i) the M genome does not have an unconditional replicative advantage over the F genome, and (ii) in contrast to "masculinization" (the process by which an F molecule assumes the role of the M genome) "feminization" (the process by which an M molecule assumes the role of the F genome) might be a rare but not impossible phenomenon.Key words: mitocho...