Neutral mechanisms and niche differentiation in steady-state insular microbial communities revealed by single cell analysis.
Neutral mechanisms and niche differentiation in steady-state insular microbial communities revealed by single cell analysis.
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DOI：
10.1111/1462-2920.14437
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发表时间：
2019-01
影响因子：
5.1
通讯作者：
Müller S
中科院分区：
文献类型：
--
作者：
Liu Z;Cichocki N;Hübschmann T;Süring C;Ofiţeru ID;Sloan WT;Grimm V;Müller S
在完全孤立的微生物群落中，群落结构的演变不能通过新成员的移民来塑造。此外，当这些社区在稳定状态下运行时，环境因素对其组装的影响减小。因此，在稳态条件下，人们会期望类似的社区结构。然而，在并行设置中，可变性确实发生。为了揭示这一现象背后的生态机制，在单细胞水平上对5个平行反应器进行了约100代的研究，并通过生态措施量化了群落结构变化。是否可以控制社区的变异性进行了测试，通过实施软温度胁迫作为潜在的同步。对数正态秩序丰度曲线的低斜率表明中性机制占主导地位，即，物种身份不起作用。亚群落丰度等级的变化和群落间成对β多样性随时间的增加支持了这一点。生态位分化也被观察到，如陡峭的几何状的秩序丰度曲线和非生物和生物参数之间的相关性在初始适应和干扰后增加的数量所示。然而，中立势力仍然主导着社区集会。我们的研究结果表明，在孤立的稳态环境中，复杂的微生物群落可能难以同步并保持其原始或期望的结构，因为它们是非平衡系统。
In completely insular microbial communities, evolution of community structure cannot be shaped by the immigration of new members. In addition, when those communities are run in steady state, the influence of environmental factors on their assembly is reduced. Therefore, one would expect similar community structures under steady‐state conditions. Yet, in parallel setups, variability does occur. To reveal ecological mechanisms behind this phenomenon, five parallel reactors were studied at the single‐cell level for about 100 generations and community structure variations were quantified by ecological measures. Whether community variability can be controlled was tested by implementing soft temperature stressors as potential synchronizers. The low slope of the lognormal rank‐order abundance curves indicated a predominance of neutral mechanisms, i.e., where species identity plays no role. Variations in abundance ranks of subcommunities and increase in inter‐community pairwise β‐diversity over time support this. Niche differentiation was also observed, as indicated by steeper geometric‐like rank‐order abundance curves and increased numbers of correlations between abiotic and biotic parameters during initial adaptation and after disturbances. Still, neutral forces dominated community assembly. Our findings suggest that complex microbial communities in insular steady‐state environments can be difficult to synchronize and maintained in their original or desired structure, as they are non‐equilibrium systems.
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影响因子：
4.8
作者：
Fisher, RA;Corbet, AS;Williams, CB
通讯作者：
Williams, CB
影响因子：
13.6
作者：
Alroy, John
通讯作者：
Alroy, John
影响因子：
11
作者：
Ferrenberg, Scott;O'Neill, Sean P.;Nemergut, Diana R.
通讯作者：
Nemergut, Diana R.
影响因子：
8.8
作者：
Adler, Peter B.;HilleRisLambers, Janneke;Levine, Jonathan M.
通讯作者：
Levine, Jonathan M.
DOI：
10.1111/j.2517-6161.1995.tb02031.x
发表时间：
1995-01-01
影响因子：
5.8
作者：
BENJAMINI, Y;HOCHBERG, Y
通讯作者：
HOCHBERG, Y