Local adaptation of a bacterium is as important as its presence in structuring a natural microbial community.
Local adaptation of a bacterium is as important as its presence in structuring a natural microbial community.
复制标题
DOI：
10.1038/ncomms12453
复制
发表时间：
2016-08-09
影响因子：
16.6
通讯作者：
Buckling A
中科院分区：
文献类型：
--
作者：
Gómez P;Paterson S;De Meester L;Liu X;Lenzi L;Sharma MD;McElroy K;Buckling A
一个物种的当地适应可以影响群落的组成，但当地适应的重要性相比，物种本身的存在是未知的。在这里，我们确定如何堆肥细菌群落暴露于升高的温度变化超过2个月的焦点细菌，荧光假单胞菌SBW25，已预先适应或不堆肥48天的存在下的结果。当地的适应社区组成的影响是一样大的物种存在本身的影响，这些结果强大的存在下，一个额外的强大的选择压力：SBW25特异性病毒。这些发现表明，在生态时间尺度上发生的进化可能是天然微生物群落结构的关键驱动力，特别是在某些物种在受到大的扰动（如暴露于抗生素或作物种植和收获）后具有进化优势的情况下。 虽然一个物种的存在和特征都可以影响其生态群落的动态，但这些因素的影响很难理清。在这里，戈麦斯等人在微生物围隔生态系统中证明，焦点物种的局部适应可以像焦点物种本身的存在一样影响群落。
Local adaptation of a species can affect community composition, yet the importance of local adaptation compared with species presence per se is unknown. Here we determine how a compost bacterial community exposed to elevated temperature changes over 2 months as a result of the presence of a focal bacterium, Pseudomonas fluorescens SBW25, that had been pre-adapted or not to the compost for 48 days. The effect of local adaptation on community composition is as great as the effect of species presence per se, with these results robust to the presence of an additional strong selection pressure: an SBW25-specific virus. These findings suggest that evolution occurring over ecological time scales can be a key driver of the structure of natural microbial communities, particularly in situations where some species have an evolutionary head start following large perturbations, such as exposure to antibiotics or crop planting and harvesting. Though both the presence and traits of a species can influence the dynamics of its ecological community, the effects of these factors are difficult to disentangle. Here, Gómez et al. demonstrate in a microbial mesocosm that local adaptation of a focal species can influence the community as much as the presence of the focal species per se.