A molecular view of microbial diversity and the biosphere
A molecular view of microbial diversity and the biosphere
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DOI：
10.1126/science.276.5313.734
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发表时间：
1997-05-02
期刊：
影响因子：
56.9
通讯作者：
Pace, NR
中科院分区：
文献类型：
--
作者：
Pace, NR
经过30多年的分子系统发育研究，研究人员已经编制了一份日益强大的进化多样性地图，显示生命的主要多样性是微生物，分布在三个主要的相关群体或领域：微生物，细菌和真核生物。这三个领域代表的一般性质表明，最早的生命是基于无机营养，光合作用和利用有机化合物进行碳和能量代谢相对较晚。应用分子系统发育方法研究自然微生物生态系统，而不需要传统的培养，导致了许多意想不到的进化谱系的发现;其中一些谱系的成员与已知生物体仅远亲，但足够丰富，可能会对生物圈的化学产生影响。
Over three decades of molecular-phylogenetic studies, researchers have compiled an increasingly robust map of evolutionary diversification showing that the main diversity of life is microbial, distributed among three primary relatedness groups or domains: Archaea, Bacteria, and Eucarya. The general properties of representatives of the three domains indicate that the earliest life was based on inorganic nutrition and that photosynthesis and use of organic compounds for carbon and energy metabolism came comparatively later. The application of molecular-phylogenetic methods to study natural microbial ecosystems without the traditional requirement for cultivation has resulted in the discovery of many unexpected evolutionary lineages; members of some of these lineages are only distantly related to known organisms but are sufficiently abundant that they are likely to have impact on the chemistry of the biosphere.