疑似无性的金藻具有减数分裂基因：来自转录组数据的证据。
Putatively asexual chrysophytes have meiotic genes: evidence from transcriptomic data.
作者信息
Kraus Diana, Chi Jingyun, Boenigk Jens, Beisser Daniela, Graupner Nadine, Dunthorn Micah
机构信息
Department of Ecology, University of Kaiserslautern, Kaiserslautern, Germany.
Department of Biodiversity, University of Duisburg-Essen, Essen, Germany.
出版信息
PeerJ. 2019 Jan 16;6:e5894. doi: 10.7717/peerj.5894. eCollection 2019.
Chrysophytes are a large group of heterotrophic, phototrophic, or even mixotrophic protists that are abundant in aquatic as well as terrestrial environments. Although much is known about chrysophyte biology and ecology, it is unknown if they are sexual or not. Here we use available transcriptomes of 18 isolates of 15 putatively asexual species to inventory the presence of genes used in meiosis. Since we were able to detect a set of nine meiosis-specific and 29 meiosis-related genes shared by the chrysophytes, we conclude that they are secretively sexual and therefore should be investigated further using genome sequencing to uncover any missed genes from the transcriptomes.
金藻是一大类异养、光合自养甚至兼养的原生生物，在水生和陆地环境中都很丰富。尽管对金藻的生物学和生态学已有很多了解，但它们是否有性繁殖尚不清楚。在这里，我们利用15个假定的无性物种的18个分离株的现有转录组来盘点减数分裂中使用的基因的存在情况。由于我们能够检测到金藻共有的一组9个减数分裂特异性基因和29个减数分裂相关基因，我们得出结论，它们是隐性有性的，因此应该进一步使用基因组测序进行研究，以发现转录组中遗漏的任何基因。
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