Competition for nutrients increases invasion resistance during assembly of microbial communities.
Competition for nutrients increases invasion resistance during assembly of microbial communities.
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DOI：
10.1111/mec.16565
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发表时间：
2022-08
影响因子：
4.9
通讯作者：
Wagner, Andreas
中科院分区：
文献类型：
--
作者：
Wagner, Andreas
通过微生物物种的连续入侵来组装微生物群落的实验研究具有挑战性。在这里，我使用多个物种的基因组规模代谢模型来模拟群落组装。每个这样的模型都代表了一个物种用来从环境中的营养物质中构建生物质的所有已知的生化反应。这种模型中的物种相互作用源于最初的生化原理，要么通过对环境营养物的竞争，要么通过对常驻物种排泄的代谢副产品的交叉喂养。我使用这些模型研究了 250 个群落组装序列。在每一个这样的序列中，群落都会通过连续的物种入侵而发生变化。在 250 个组装序列中，群落的物种变得更加丰富并且能够抵抗入侵。对建设性和破坏性入侵（导致物种灭绝的入侵）的抵抗力与高群落生产力、高生物量和低浓度未使用的碳有关。营养物质的竞争超过了交叉喂养对个体物种生长速度的影响。在 250 个组装序列期间出现的所有群落组成的群落组装网络中，某些群落偶然出现的频率比预期的要高。其中包括具有高生物量的抗入侵“吸引子”群落，它们在群落组装后期出现，并由于其抗入侵性而优先持续存在。基因组规模的代谢模型可以揭示独立于常驻物种和环境的微生物群落的一般特性。
The assembly of microbial communities through sequential invasions of microbial species is challenging to study experimentally. Here, I used genome‐scale metabolic models of multiple species to model community assembly. Each such model represents all known biochemical reactions that a species uses to build biomass from nutrients in the environment. Species interactions in such models emerge from first biochemical principles, either through competition for environmental nutrients, or through cross‐feeding on metabolic by‐products excreted by resident species. I used these models to study 250 community assembly sequences. In each such sequence, a community changes through successive species invasions. During the 250 assembly sequences, communities become more species‐rich and invasion‐resistant. Resistance against both constructive and destructive invasions – those that entail species extinction – is associated with high community productivity, high biomass, and low concentrations of unused carbon. Competition for nutrients outweighs the influence of cross‐feeding on the growth rate of individual species. In a community assembly network of all communities that arise during the 250 assembly sequences, some communities occur more often than expected by chance. These include invasion resistant “attractor” communities with high biomass that arise late in community assembly and persist preferentially because of their invasion resistance. Genome‐scale metabolic models can reveal generic properties of microbial communities that are independent of the resident species and the environment.
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微生物社区大会中的功能吸引子。
影响因子：
9.3
作者：
Estrela S;Vila JCC;Lu N;Bajić D;Rebolleda-Gómez M;Chang CY;Goldford JE;Sanchez-Gorostiaga A;Sánchez Á
通讯作者：
Sánchez Á
DOI：
10.1038/nrmicro1949
发表时间：
2009-02
期刊：
Nature reviews. Microbiology
影响因子：
--
作者：
通讯作者：
--
影响因子：
4.8
作者：
Clark, JS
通讯作者：
Clark, JS
影响因子：
14.8
作者：
Becker, Scott A.;Feist, Adam M.;Herrgard, Markus J.
通讯作者：
Herrgard, Markus J.
影响因子：
3.4
作者：
Baiser, Benjamin;Russell, Gareth J.;Lockwood, Julie L.
通讯作者：
Lockwood, Julie L.