Transposon Removal Reveals Their Adaptive Fitness Contribution.

Transposon Removal Reveals Their Adaptive Fitness Contribution.
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DOI:
10.1093/gbe/evae010
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发表时间:
2024-02-01
影响因子:
3.3
通讯作者:
Zaratiegui, Mikel
Zaratiegui, Mikel
中科院分区:
生物学2区
文献类型:
--
作者:
Cranz-Mileva, Susanne;Reilly, Eve;Chalhoub, Noor;Patel, Rohan;Atanassova, Tania;Cao, Weihuan;Ellison, Christopher;Zaratiegui, Mikel

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转座因子是一种分子寄生物,通过产生新的拷贝来超越自然选择,从而在宿主基因组中持续存在。转座因子对宿主基因组进化有很大影响,在某些情况下提供适应性变化。在这里,我们测量的健身效果的转座因子插入在裂殖酵母裂殖酵母型菌株通过删除其唯一的本地转座因子家族,长末端重复反转录转座子Tf 2的所有插入。我们发现,Tf2元件提供了一个积极的健身贡献,其主机。Tf2消融导致线粒体基因调节的变化,并且一致地,适应性效应对生长条件敏感。我们建议,Tf2的影响主机健身在一个直接的方式,通过动态重新布线的转录响应代谢应激。
Transposable elements are molecular parasites that persist in their host genome by generating new copies to outpace natural selection. Transposable elements exert a large influence on host genome evolution, in some cases providing adaptive changes. Here we measure the fitness effect of the transposable element insertions in the fission yeast Schizosaccharomyces pombe type strain by removing all insertions of its only native transposable element family, the long terminal repeat retrotransposon Tf2. We show that Tf2 elements provide a positive fitness contribution to its host. Tf2 ablation results in changes to the regulation of a mitochondrial gene and, consistently, the fitness effect are sensitive to growth conditions. We propose that Tf2 influences host fitness in a directed manner by dynamically rewiring the transcriptional response to metabolic stress.
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影响因子: 0.8
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