Heterogeneous distribution of metabolites across plant species
Heterogeneous distribution of metabolites across plant species
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DOI：
10.1016/j.physa.2009.03.011
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发表时间：
2009-03
影响因子：
3.3
通讯作者：
Kazuhiro Takemoto;Masanori Arita
中科院分区：
文献类型：
--
作者：
Kazuhiro Takemoto;Masanori Arita
我们调查的类黄酮，植物次生代谢产物的主要类别，跨物种的分布。黄嘌呤具有高度的物种特异性，曾被认为是了解生物适应性进化和生物特征的化学标记。我们使用二分网络调查物种之间的分布，并发现两个异质分布是保守的几个家庭：幂律分布的类黄酮的数量在一个物种和共享物种的数量的一个特定的类黄酮。为了解释可能的起源的异质性，我们提出了一个简单的模型，基本上，一个单一的参数。因此，我们表明，两个各自的幂律统计出现从简单的进化机制的基础上的乘法过程。这些发现提供了对代谢物多样性的演变和生物体的表征的见解，这些生物体由于不同的原因而无视基因组序列分析。
We investigate the distribution of the flavonoids, a major category of plant secondary metabolites, across species. Flavonoids are known to show high species specificity, and were once considered as chemical markers for understanding adaptive evolution and characterization of living organisms. We investigate the distribution among species using bipartite networks, and find that two heterogeneous distributions are conserved among several families: the power-law distributions of the number of flavonoids in a species and the number of shared species of a particular flavonoid. In order to explain the possible origin of the heterogeneity, we propose a simple model with, essentially, a single parameter. As a result, we show that two respective power-law statistics emerge from simple evolutionary mechanisms based on a multiplicative process. These findings provide insights into the evolution of metabolite diversity and characterization of living organisms that defy genome sequence analysis for different reasons.