MicroRNA evolution provides new evidence for a close relationship of Diplura to Insecta,Systematic Entomology

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MicroRNA evolution provides new evidence for a close relationship of Diplura to Insecta
Systematic Entomology ( IF 4.7 ) Pub Date : 2019-11-13 , DOI: 10.1111/syen.12401
Ai‐Min Liu _{1,

2} , Wan‐Jun Chen ₂ , Cheng‐Wang Huang ₂ , Chang‐Yuan Qian ₂ , Yan Liang ₂ , Sheng Li ₁ , Shuai Zhan ₂ , Yun‐Xia Luan _{1,

2}

Affiliation

The phylogenetic interrelationships among four hexapod lineages (Protura, Collembola, Diplura and Insecta) are pivotal to understanding the origin of insects and the early diversification of Hexapoda, but they have been difficult to clarify based on the available data. In this study, we identified 91 conserved microRNA (miRNA) families from 36 panarthropod taxa, including seven newly sequenced non‐insect hexapods. We found major clade differentiation accompanied by the origin of novel miRNA families, and most miRNA clusters are conserved with a high degree of microsynteny. Importantly, we were able to identify two miRNA families unique to Hexapoda, and four miRNA families and a miRNA cluster that exist exclusively in Diplura and Insecta, suggesting a close relationship between Diplura and Insecta as well as the monophyly of Hexapoda. Combined with a phylogenetic analysis based on the presence/absence matrix of miRNA families, our study demonstrates the effectiveness of miRNA in resolving deep phylogenetic problems.

中文翻译：

MicroRNA进化为Diplura与昆虫纲的密切关系提供了新证据

四种六足动物谱系（Protura、Colembola、Diplura 和 Insecta）之间的系统发育相互关系对于了解昆虫的起源和六足动物的早期多样化至关重要，但根据现有数据很难阐明它们。在这项研究中，我们从 36 个泛节肢动物分类群中鉴定了 91 个保守的 microRNA (miRNA) 家族，其中包括 7 个新测序的非昆虫六足动物。我们发现主要的进化枝分化伴随着新的 miRNA 家族的起源，大多数 miRNA 簇是保守的，具有高度的微同线性。重要的是，我们能够识别出六足动物特有的两个 miRNA 家族，以及只存在于双足纲和昆虫纲中的四个 miRNA 家族和一个 miRNA 簇，表明双足纲和昆虫纲之间存在密切关系以及六足纲的单系性。

更新日期：2019-11-13

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