Liu Yibing, Zong Wencheng, Diaby Mohamed, Lin Zheguang, Wang Saisai, Gao Bo, Ji Ting, Song Chengyi
College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China.
Biology (Basel). 2021 Sep 20;10(9):940. doi: 10.3390/biology10090940.
Bees (Apoidea), the largest and most crucial radiation of pollinators, play a vital role in the ecosystem balance. Transposons are widely distributed in nature and are important drivers of species diversity. However, transposons are rarely reported in important pollinators such as bees. Here, we surveyed 37 bee genomesin Apoidea, annotated the and transposons in the genome of each species, and performed a phylogenetic analysis and determined their overall distribution. The and families showed high diversity and low abundance in the 37 species, and their proportion was significantly higher in solitary bees than in social bees. DD34D/ was found to be distributed in almost all species and was found in , , and and may still be active. Using horizontal transfer analysis, we found that DD29-30D/ may have experienced horizontal transfer (HT) events. The current study displayed the evolution profiles (including diversity, activity, and abundance) of the and transposons across 37 species of Apoidea. Our data revealed their contributions to the genomic variations across these species and facilitated in understanding of the genome evolution of this lineage.
蜜蜂（膜翅目细腰亚目针尾部蜜蜂总科）是传粉者中种类最多且最为关键的类群，在生态系统平衡中发挥着至关重要的作用。转座子在自然界广泛分布，是物种多样性的重要驱动因素。然而，在蜜蜂等重要传粉者中，转座子的报道却很少。在此，我们调查了膜翅目细腰亚目针尾部蜜蜂总科的37个蜜蜂基因组，注释了每个物种基因组中的 和 转座子，并进行了系统发育分析，确定了它们的总体分布情况。 和 家族在这37个物种中表现出高多样性和低丰度，且在独居蜂中的比例显著高于群居蜂。发现DD34D/ 几乎分布于所有物种中，并且在 、 、 和 中被发现， 可能仍具有活性。通过水平转移分析，我们发现DD29 - 30D/ 可能经历了水平转移（HT）事件。当前研究展示了膜翅目细腰亚目针尾部蜜蜂总科37个物种中 和 转座子的进化概况（包括多样性、活性和丰度）。我们的数据揭示了它们对这些物种基因组变异的贡献，有助于理解该谱系的基因组进化。
