Additional taxonomic coverage of the doubly uniparental inheritance in bivalves: Evidence of sex‐linked heteroplasmy in the razor clam Solen marginatus Pulteney, 1799, but not in the lagoon cockle Cerastoderma glaucum (Bruguière, 1789),Journal of Zoological Systematics and Evolutionary Research

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Additional taxonomic coverage of the doubly uniparental inheritance in bivalves: Evidence of sex‐linked heteroplasmy in the razor clam Solen marginatus Pulteney, 1799, but not in the lagoon cockle Cerastoderma glaucum (Bruguière, 1789)
Journal of Zoological Systematics and Evolutionary Research ( IF 2.0 ) Pub Date : 2020-05-13 , DOI: 10.1111/jzs.12386
Livia Lucentini ₁ , Federico Plazzi ₂ , Andrea Augusto Sfriso ₃ , Claudia Pizzirani ₁ , Adriano Sfriso ₄ , Stefania Chiesa _{5,

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Affiliation

In animals, doubly uniparental inheritance (DUI) is a major exception to the common strict maternal inheritance of mitochondria. To date, DUI has only been found in many bivalve species, but its distribution is still unclear. Given the great species richness of the class, much effort is needed to further investigate the occurrence of DUI in unsampled species. A compelling evidence of DUI is generally the presence of a sex‐linked heteroplasmy, where two divergent mitochondrial lineages are found: One is isolated from the male germline, and the other one is isolated from the female germline and, normally, from the soma of both sexes. In the present study, we investigated the sex‐linked heteroplasmy in the razor clam Solen marginatus Pulteney, 1799 and in the lagoon cockle Cerastoderma glaucum (Bruguière, 1789) using two mitochondrial markers (cox1 and rrnL). We found evidence of DUI in the species S. marginatus, with a divergence up to 21% for the rrnL gene, but not in C. glaucum. Moreover, our phylogenetic reconstruction includes all the available data for heterodont species with sex‐linked heteroplasmy and suggests multiple origins of DUI in this subclass, as well as the presence of DUI in other species of the genus Solen.

中文翻译：

双壳类中双亲单亲遗传的其他分类学覆盖：1799年剃刀蛤Sol Solen marginatus Pulteney中的性相关异质性证据，而泻湖鸟蛤中的青瓷角藻则不存在（Bruguière，1789年）

在动物中，双重单亲遗传（DUI）是线粒体常见的严格母体遗传的主要例外。迄今为止，仅在许多双壳类动物中发现了DUI，但其分布仍不清楚。鉴于该类物种的丰富性，需要付出更多的努力来进一步研究DUI在未采样物种中的发生。DUI的一个令人信服的证据通常是存在性相关的异质性，其中发现了两个不同的线粒体谱系：一个是从雄性种系中分离出来的，另一个是从雌性种系中分离出来的，通常是从母体的体中分离出来的。两性。在本研究中，我们调查了1799年剃刀蛤Sol Solen marginatus Pulteney和泻湖鸟蛤中的性别相关异质性（Bruguière，1789年）使用了两个线粒体标记物（cox1和rrnL）。我们发现酒后驾车的证据种类S. marginatus，具有扩散达21％，为rrnL基因，但不是在C.灰绿。此外，我们的系统发育重建包括具有异性联系异质性的异齿类物种的所有可用数据，并暗示了该亚类中DUI的多种起源，以及Solen属其他物种中DUI的存在。

更新日期：2020-05-13

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