Microbial communities evolve faster in extreme environments.

Microbial communities evolve faster in extreme environments.
复制标题

微生物群落在极端环境中进化得更快

DOI:
10.1038/srep06205
复制
发表时间:
2014-08-27
期刊:
影响因子:
4.6
通讯作者:
Shu WS
Shu WS
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Li SJ;Hua ZS;Huang LN;Li J;Shi SH;Chen LX;Kuang JL;Liu J;Hu M;Shu WS

文献摘要

参考文献

被引文献

相似文献

在群落水平上对微生物进行进化分析是一条将生态模式与进化过程联系起来的新的研究途径,但仍缺乏足够的研究。在这里,我们报告了一个相对进化率(rER)分析的微生物群落从六个不同的自然环境的基础上40宏基因组样本。我们发现,微生物群落的rER主要是由环境条件形成的,居住在极端生境(酸性矿井排水,盐湖和温泉)的微生物比那些居住在良性环境(表层海洋,淡水和土壤)的微生物进化得更快。这些发现得到了更宽松的净化选择和潜在的频繁的水平基因转移在极端栖息地的社区观察的支持。高rER的机制被认为是在进化过程中压力条件下产生的高突变率。这项研究使我们更接近于理解微生物适应极端环境的进化机制。
Evolutionary analysis of microbes at the community level represents a new research avenue linking ecological patterns to evolutionary processes, but remains insufficiently studied. Here we report a relative evolutionary rates (rERs) analysis of microbial communities from six diverse natural environments based on 40 metagenomic samples. We show that the rERs of microbial communities are mainly shaped by environmental conditions, and the microbes inhabiting extreme habitats (acid mine drainage, saline lake and hot spring) evolve faster than those populating benign environments (surface ocean, fresh water and soil). These findings were supported by the observation of more relaxed purifying selection and potentially frequent horizontal gene transfers in communities from extreme habitats. The mechanism of high rERs was proposed as high mutation rates imposed by stressful conditions during the evolutionary processes. This study brings us one stage closer to an understanding of the evolutionary mechanisms underlying the adaptation of microbes to extreme environments.
DOI: 10.1093/oxfordjournals.molbev.a026334
发表时间: 2000-04-01
影响因子: 10.7
作者:
Castresana, J
通讯作者: Castresana, J
DOI: 10.1038/msb.2011.42
发表时间: 2011-07-05
影响因子: 9.9
作者:
通讯作者: --
DOI: 10.1371/journal.pgen.1000520
发表时间: 2009-06
期刊: PLoS genetics
影响因子: 4.5
作者:
Drake JW
通讯作者: Drake JW
DOI: 10.1017/s0016672300010284
发表时间: 1967-01-01
期刊: GENETICAL RESEARCH
影响因子: --
作者:
KIMURA, M
通讯作者: KIMURA, M
DOI: 10.1016/s0092-8674(00)00175-6
发表时间: 2000-11-22
期刊: CELL
影响因子: 64.5
作者:
Denamur, E;Lecointre, G;Matic, I
通讯作者: Matic, I