Constraints on microbial metabolism drive evolutionary diversification in homogeneous environments
Constraints on microbial metabolism drive evolutionary diversification in homogeneous environments
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DOI：
10.1111/j.1420-9101.2007.01376.x
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发表时间：
2007-09-01
影响因子：
2.1
通讯作者：
Maclean, R. C.
中科院分区：
文献类型：
--
作者：
Gudelj, I.;Beardmore, R. E.;Maclean, R. C.
了解微生物多样性的进化是进化生态学中的一个重要问题。在本文中，我们研究了两个既定的生物化学权衡微生物多样化的作用，使用一个模型，连接生态和进化过程与生物化学的基本方面。我们研究的权衡如下：（1）底物转运速率和亲和力之间的权衡;（2）ATP产生速率和产量之间的权衡。我们的模型表明，这些生化权衡可以在最简单的生态条件下驱动进化多样化：包含单一限制资源的同质环境。我们认为，一些微生物选择实验的结果与我们的模型的预测是一致的。
Understanding the evolution of microbial diversity is an important and current problem in evolutionary ecology. In this paper, we investigated the role of two established biochemical trade-offs in microbial diversification using a model that connects ecological and evolutionary processes with fundamental aspects of biochemistry. The trade-offs that we investigated are as follows:(1) a trade-off between the rate and affinity of substrate transport; and (2) a trade-off between the rate and yield of ATP production. Our model shows that these biochemical trade-offs can drive evolutionary diversification under the simplest possible ecological conditions: a homogeneous environment containing a single limiting resource. We argue that the results of a number of microbial selection experiments are consistent with the predictions of our model.