Digging into bivalve miRNAomes: between conservation and innovation

文献类型： 外文期刊

第一作者： Rosani, Umberto

作者： Rosani, Umberto;Bortoletto, Enrico;Venier, Paola;Bai, Chang-Ming;Bai, Chang-Ming;Bai, Chang-Ming;Novoa, Beatriz;Figueras, Antonio;Fromm, Bastian

作者机构：

关键词： microRNA; Bivalvia; mussel; blood clam; bivalves

期刊名称：PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES （ 影响因子：5.68； 五年影响因子：6.736 ）

ISSN： 0962-8436

年卷期： 2021 年 376 卷 1825 期

页码：

收录情况： SCI

摘要： Bivalves are a diverse mollusc group of economic and ecological importance. An evident resilience to pollution, parasites and extreme environments makes some bivalve species important models for studying adaptation and immunity. Despite substantial progress in sequencing projects of bivalves, information on non-coding genes and gene-regulatory aspects is still lacking. Here, we review the current repertoire of bivalve microRNAs (miRNAs), important regulators of gene expression in Metazoa. We exploited available short non-coding RNA (sncRNA) data for Pinctada martensii, Crassostrea gigas, Corbicula fluminea, Tegillarca granosa and Ruditapes philippinarum, and we produced new sncRNA data for two additional bivalves, the Mediterranean mussel Mytilus galloprovincialis and the blood clam Scapharca broughtonii. We found substantial heterogeneity and incorrect annotations of miRNAs; hence, we reannotated conserved miRNA families using recently established criteria for bona fide microRNA annotation. We found 106 miRNA families missing in the previously published bivalve datasets and 89 and 87 miRNA complements were identified in the two additional species. The overall results provide a homogeneous and evolutionarily consistent picture of miRNAs in bivalves and enable future comparative studies. The identification of two bivalve-specific miRNA families sheds further light on the complexity of transcription and its regulation in bivalve molluscs. This article is part of the Theo Murphy meeting issue 'Molluscan genomics: broad insights and future directions for a neglected phylum'.

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