Adaptive radiations in natural populations of prokaryotes: innovation is key.
Adaptive radiations in natural populations of prokaryotes: innovation is key.
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DOI：
10.1093/femsec/fiad154
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发表时间：
2023-11-13
影响因子：
4.2
通讯作者：
中科院分区：
文献类型：
--
作者：
原核生物多样性构成了生命之树的大部分，对生物圈的运作和人类健康至关重要。然而，与动物和植物相比，原核生物多样化的模式和机制受到的关注相对较少。适应性辐射是一个祖先物种迅速分化为多个生态上不同的物种，是产生宏观生物多样性的一个基本过程。在这里，我们讨论了生态机会是否会导致细菌多样化的类似爆发。我们探讨了原核生物的适应性辐射如何通过水平获得的关键创新来启动，这些创新允许谱系入侵新的生态位空间，随后在多样化的专家后代中进行划分。我们讨论了新的适应区是如何殖民和利用后，一个关键的创新和某些类型的进化是否更容易适应辐射。当重组障碍不存在时，辐射进入利基专家并不一定导致细菌的物种形成。我们提出，在这种情况下，生态位特异性基因可以在单一谱系中积累，导致开放泛基因组的进化。由水平获得的关键创新介导的适应性进化的爆发可能是细菌多样性的重要驱动力，并影响泛基因组进化。
Prokaryote diversity makes up most of the tree of life and is crucial to the functioning of the biosphere and human health. However, the patterns and mechanisms of prokaryote diversification have received relatively little attention compared to animals and plants. Adaptive radiation, the rapid diversification of an ancestor species into multiple ecologically divergent species, is a fundamental process by which macrobiological diversity is generated. Here, we discuss whether ecological opportunity could lead to similar bursts of diversification in bacteria. We explore how adaptive radiations in prokaryotes can be kickstarted by horizontally acquired key innovations allowing lineages to invade new niche space that subsequently is partitioned among diversifying specialist descendants. We discuss how novel adaptive zones are colonized and exploited after the evolution of a key innovation and whether certain types of are more prone to adaptive radiation. Radiation into niche specialists does not necessarily lead to speciation in bacteria when barriers to recombination are absent. We propose that in this scenario, niche-specific genes could accumulate within a single lineage, leading to the evolution of an open pangenome. Bursts of adaptive evolution mediated by horizontally acquired key innovations could be an important driver of bacterial diversity and influence pangenome evolution.
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影响因子：
4.5
作者：
Guy L;Nystedt B;Toft C;Zaremba-Niedzwiedzka K;Berglund EC;Granberg F;Näslund K;Eriksson AS;Andersson SG
通讯作者：
Andersson SG
影响因子：
3.4
作者：
Bobay LM;Ochman H
通讯作者：
Ochman H
DOI：
10.1073/pnas.1109000108
发表时间：
2011-12-27
影响因子：
11.1
作者：
Gubry-Rangin, Cecile;Hai, Brigitte;Nicol, Graeme W.
通讯作者：
Nicol, Graeme W.
影响因子：
4.2
作者：
Bell, Terrence H.;Bell, Thomas
通讯作者：
Bell, Thomas
DOI：
10.1073/pnas.1600974113
发表时间：
2016-07-19
影响因子：
11.1
作者：
Hall, James P. J.;Wood, A. Jamie;Brockhurst, Michael A.
通讯作者：
Brockhurst, Michael A.