Honey bees are large-scale monitoring tools due to their extensive environmental exploration. In their activities and from the hive ecosystem complex, they get in close contact with many organisms whose traces can be transferred into the honey, which can represent an interesting reservoir of environmental DNA (eDNA) signatures and information useful to analyse the honey bee hologenome complexity. In this study, we tested a deep shotgun sequencing approach of honey DNA coupled with a specifically adapted bioinformatic pipeline. This methodology was applied to a few honey samples pointing out DNA sequences from 191 organisms spanning different kingdoms or phyla (viruses, bacteria, plants, fungi, protozoans, arthropods, mammals). Bacteria included the largest number of species. These multi-kingdom signatures listed common hive and honey bee gut microorganisms, honey bee pathogens, parasites and pests, which resembled a complex interplay that might provide a general picture of the honey bee pathosphere. Based on the Apis mellifera filamentous virus genome diversity (the most abundant detected DNA source) we obtained information that could define the origin of the honey at the apiary level. Mining Apis mellifera sequences made it possible to identify the honey bee subspecies both at the mitochondrial and nuclear genome levels.

译文

蜜蜂由于其广泛的环境探索而成为大型监测工具。在他们的活动和蜂巢生态系统综合体中,他们与许多生物密切接触者,这些生物的痕迹可以转移到蜂蜜中,这可以代表一个有趣的环境DNA (eDNA) 特征库,以及有助于分析蜜蜂hologenome复杂性的信息。在这项研究中,我们测试了蜂蜜DNA的深度shot弹枪测序方法,并结合了专门适应的生物信息学管道。该方法应用于一些蜂蜜样品,指出来自跨越不同王国或门 (病毒、细菌、植物、真菌、原生动物、节肢动物、哺乳动物) 的191生物的DNA序列。细菌包括最多的物种。这些多王国的特征列出了常见的蜂巢和蜜蜂肠道微生物,蜜蜂病原体,寄生虫和害虫,它们类似于复杂的相互作用,可能提供了蜜蜂病态的一般情况。基于蜜蜂丝状病毒的基因组多样性 (检测到的最丰富的DNA来源),我们获得了可以在蜂场水平上定义蜂蜜起源的信息。挖掘Apis mellifera序列可以在线粒体和核基因组水平上鉴定蜜蜂亚种。

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