Sperm mitochondrial DNA transmission to both male and female offspring in the blue mussel Mytilus galloprovincialis
Sperm mitochondrial DNA transmission to both male and female offspring in the blue mussel Mytilus galloprovincialis
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DOI：
10.1111/j.1440-169x.2006.00863.x
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发表时间：
2006-05-01
影响因子：
2.5
通讯作者：
Komaru, A
中科院分区：
文献类型：
--
作者：
Obata, M;Kamiya, C;Komaru, A
在贻贝中，来自精子的父亲线粒体DNA（M型）已知会传递给后代。这种现象被称为双重单亲遗传（DUI）。根据DUI，据报道，雌性贻贝通常只有母体mtDNA（F型）。本研究利用M型和F型特异性引物对紫贻贝mtDNA的传递方式进行了研究。用SNaPshot法测定各样本中M型和F型的比例。所有雌鱼的内收肌和性腺均为M型。在84.6%（22/26）的雌虫所产的未受精卵中，也检测到M型。F型在所有女性中比M型更丰富。虽然M型在女性中的比例很低，但所有女性都含有M型。从这些结果中，我们提出了一个新的可能性DUI遗传。未受精卵中M型的存在表明M型卵也可能有助于M型遗传。
In Mytilus mussels, paternal mitochondrial DNA (M type) from sperm is known to be transmitted to offspring. This phenomenon is called doubly uniparental inheritance (DUI). Under DUI, it has been reported that female mussels generally have only maternal mtDNA (F type). In this study, we examined the mode of mtDNA transmission in Mytilus galloprovincialis using M and F type-specific primer sets. The ratio of M and F types were measured in each sample by SNaPshot. The M type was detected in the adductor muscle and female gonad of all females. In unfertilized eggs spawned by 84.6% of females (22/26), M type was also detected. The F type was more abundant than the M type in all females. Although the ratio of M type in females was very low, all females contained the M type. From these results, we propose a new possibility about DUI inheritance. The presence of M type in unfertilized eggs indicates that the M type of eggs may also contribute to M type inheritance.