Genomic Signatures of Recent Adaptation in a Wild Bumblebee.

Genomic Signatures of Recent Adaptation in a Wild Bumblebee.
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DOI:
10.1093/molbev/msab366
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发表时间:
2022-02-03
影响因子:
10.7
通讯作者:
Wurm Y
Wurm Y
中科院分区:
生物学1区
文献类型:
--
作者:
Colgan TJ;Arce AN;Gill RJ;Ramos Rodrigues A;Kanteh A;Duncan EJ;Li L;Chittka L;Wurm Y

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环境变化威胁着昆虫传粉者,给农业和生态系统稳定带来风险。尽管它们很重要,但我们对野生昆虫如何应对环境压力知之甚少。为了了解生态学上重要的传粉者适应的基因组基础,我们分析了在英国各地收集的熊蜂的基因组。我们揭示了这个种群中广泛的遗传多样性,以及整个基因组最近适应的强烈特征,这些特征影响了包括神经生物学和翅膀发育在内的关键过程。我们还发现了基因组的不寻常特征,包括一个包含53个基因的区域,该区域在许多蜜蜂物种中缺乏遗传多样性,以及来自沃尔巴克氏体细菌的水平基因转移。总的来说,我们观察到的遗传多样性及其在整个基因组和种群中的分布应该支持这种重要的传粉物种对持续和未来选择压力的适应能力。将我们的方法应用于更多的物种应该有助于了解它们在适应潜力方面的差异,并为那些最危险的物种制定保护策略。
Environmental changes threaten insect pollinators, creating risks for agriculture and ecosystem stability. Despite their importance, we know little about how wild insects respond to environmental pressures. To understand the genomic bases of adaptation in an ecologically important pollinator, we analyzed genomes of Bombus terrestris bumblebees collected across Great Britain. We reveal extensive genetic diversity within this population, and strong signatures of recent adaptation throughout the genome affecting key processes including neurobiology and wing development. We also discover unusual features of the genome, including a region containing 53 genes that lacks genetic diversity in many bee species, and a horizontal gene transfer from a Wolbachia bacteria. Overall, the genetic diversity we observe and how it is distributed throughout the genome and the population should support the resilience of this important pollinator species to ongoing and future selective pressures. Applying our approach to more species should help understand how they can differ in their adaptive potential, and to develop conservation strategies for those most at risk.
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