Why Might Bacterial Pathogens Have Small Genomes?

Why Might Bacterial Pathogens Have Small Genomes?
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为什么细菌病原体的基因组可能很小?

DOI:
10.1016/j.tree.2017.09.006
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发表时间:
2017
影响因子:
16.8
通讯作者:
J. Welch
J. Welch
中科院分区:
生物学1区
文献类型:
--
作者:
L. Weinert;J. Welch

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与非致病性或致病性较低的近亲相比,引起严重疾病的细菌通常具有更小的基因组和更少的基因。在这里,我们回顾了这种关联的普遍性的证据,并总结了这种关联可能存在的各种原因。我们关注可能导致还原性基因组进化的群体遗传过程,并展示其中的一些过程如何与致病性相关。我们发现了大多数作用于细菌病原体的过程的一些证据,包括作用于同一谱系的几种不同的基因组减少模式。我们认为,基因组进化的可预测过程可能无法反映任何共同的潜在过程。
Bacteria that cause serious disease often have smaller genomes, and fewer genes, than their nonpathogenic, or less pathogenic relatives. Here, we review evidence for the generality of this association, and summarise the various reasons why the association might hold. We focus on the population genetic processes that might lead to reductive genome evolution, and show how several of these could be connected to pathogenicity. We find some evidence for most of the processes having acted in bacterial pathogens, including several different modes of genome reduction acting in the same lineage. We argue that predictable processes of genome evolution might not reflect any common underlying process.
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影响因子: 16.8
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DOI: 10.1101/140798
发表时间: 2017
期刊: --
影响因子: --
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