Steady at the wheel: conservative sex and the benefits of bacterial transformation.
Steady at the wheel: conservative sex and the benefits of bacterial transformation.
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DOI：
10.1098/rstb.2015.0528
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发表时间：
2016-10-19
期刊：
影响因子：
--
通讯作者：
Rozen DE
中科院分区：
文献类型：
--
作者：
Ambur OH;Engelstädter J;Johnsen PJ;Miller EL;Rozen DE
许多细菌具有高度的性行为，但它们滥交的原因尚不清楚。细菌的性进化是为了最大限度地提高多样性，促进适应不断变化的世界，还是有助于保留细菌目前的功能？换句话说，细菌的性行为是创新还是保守？我们在这篇综述的目的是结合实验，生物信息学和理论研究来批判性地评估这些替代方法，主要关注自然遗传转化，细菌相当于真核生物有性生殖。首先，我们提供了几个假设的总体概述，已经提出了解释转型的演变。接下来，我们综合了大量的证据，强调了许多被动和主动的转化障碍，这些障碍已经进化到保护细菌免受外来DNA的侵害，从而增加了在克隆体中发生转化的可能性。我们对现有文献的批判性回顾支持了这样一种观点，即细菌转化是基因组保护的一种手段，它为单个细菌细胞和可转化细菌群体提供了直接的好处。我们研究了这种观点在细菌中的普遍性，并将这种解释与真核生物中为维持性别而提出的不同进化角色进行了对比。这篇文章是主题为“奇怪的性：被低估的有性生殖的多样性”的一部分。
Many bacteria are highly sexual, but the reasons for their promiscuity remain obscure. Did bacterial sex evolve to maximize diversity and facilitate adaptation in a changing world, or does it instead help to retain the bacterial functions that work right now? In other words, is bacterial sex innovative or conservative? Our aim in this review is to integrate experimental, bioinformatic and theoretical studies to critically evaluate these alternatives, with a main focus on natural genetic transformation, the bacterial equivalent of eukaryotic sexual reproduction. First, we provide a general overview of several hypotheses that have been put forward to explain the evolution of transformation. Next, we synthesize a large body of evidence highlighting the numerous passive and active barriers to transformation that have evolved to protect bacteria from foreign DNA, thereby increasing the likelihood that transformation takes place among clonemates. Our critical review of the existing literature provides support for the view that bacterial transformation is maintained as a means of genomic conservation that provides direct benefits to both individual bacterial cells and to transformable bacterial populations. We examine the generality of this view across bacteria and contrast this explanation with the different evolutionary roles proposed to maintain sex in eukaryotes. This article is part of the themed issue ‘Weird sex: the underappreciated diversity of sexual reproduction’.
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DOI：
10.1073/pnas.1218832110
发表时间：
2013-02-19
影响因子：
11.1
作者：
Cehovin, Ana;Simpson, Peter J.;Pelicic, Vladimir
通讯作者：
Pelicic, Vladimir
11 个碱基对序列决定了嗜血杆菌转化过程中 DNA 吸收的特异性
影响因子：
3.5
作者：
DANNER, DB;DEICH, RA;SMITH, HO
通讯作者：
SMITH, HO
影响因子：
14.9
作者：
Carrasco B;Yadav T;Serrano E;Alonso JC
通讯作者：
Alonso JC
影响因子：
3.3
作者：
Barton, NH;Otto, SP
通讯作者：
Otto, SP
影响因子：
6.7
作者：
Croucher, Nicholas J.;Harris, Simon R.;Bentley, Stephen D.
通讯作者：
Bentley, Stephen D.