Historically famous for their negative impact on human-built marine wood structures, mollusc shipworms play a central ecological role in marine ecosystems. Their association with bacterial symbionts, providing cellulolytic and nitrogen-fixing activities, underscores their exceptional wood-eating and wood-boring behaviours, improving energy transfer and the recycling of essential nutrients locked in the wood cellulose. Importantly, from a molecular standpoint, a minute of resources are available from this lineage of Bivalvia. Here, we produced and assembled a transcriptome from the globally distributed naval shipworm, (family Teredinidae). The transcriptome was obtained by sequencing the total RNA from five equidistant segments of the whole body of a specimen. The quality of the produced assembly was accessed with several statistics, revealing a highly contiguous (1194 N50) and complete (over 90% BUSCO scores for Eukaryote and Metazoan databases) transcriptome, with nearly 38,000 predicted ORF, more than half being functionally annotated. Our findings pave the way to investigate the unique evolutionary biology of these highly modified bivalves and lay the foundation for an adequate gene annotation of a full genome sequence of the species.

中文翻译：

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历史上的“沉船”：海军船蛆 Teredo Navyis Linnaeus 的转录组组装，1978 年

历史上，软体动物船蛆因其对人造海洋木结构的负面影响而闻名，它们在海洋生态系统中发挥着核心生态作用。它们与细菌共生体的联系，提供纤维素分解和固氮活性，强调了它们特殊的食木和钻木行为，改善了能量转移和锁定在木材纤维素中的必需营养物质的循环利用。重要的是，从分子的角度来看，双壳纲的这一谱系可以提供一分钟的资源。在这里，我们生产并组装了全球分布的海军船蛆（Teredinidae 科）的转录组。转录组是通过对样本全身五个等距片段的总 RNA 进行测序而获得的。通过多项统计数据来评估所产生的组装的质量，揭示了高度连续（1194 N50）和完整（真核生物和后生动物数据库的 BUSCO 分数超过 90%）的转录组，具有近 38,000 个预测的 ORF，其中一半以上进行了功能注释。我们的发现为研究这些高度修饰的双壳类动物的独特进化生物学铺平了道路，并为对该物种的完整基因组序列进行充分的基因注释奠定了基础。