Sogin M L
Center for Molecular Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts 02543.
Curr Opin Genet Dev. 1991 Dec;1(4):457-63. doi: 10.1016/s0959-437x(05)80192-3.
Our understanding of evolutionary relationships in the eukaryotic world has been revolutionized by molecular systematics. Phylogenies based upon comparisons of rRNAs define five major eukaryotic assemblages plus a series of paraphyletic protist lineages. Comparison of conserved genes that were duplicated prior to the divergence of eubacteria, archaebacteria, and eukaryotes, positions the root of the universal tree within the eubacterial line of descent. In this review a novel model is presented which uses the rRNA and protein based phylogenies to describe the evolutionary origins of eukaryotes.
分子系统学彻底改变了我们对真核生物世界进化关系的理解。基于rRNA比较的系统发育树定义了五个主要的真核生物组合以及一系列并系的原生生物谱系。对在真细菌、古细菌和真核生物分化之前就已复制的保守基因进行比较，将通用树的根定位在真细菌的谱系中。在这篇综述中，提出了一个新模型，该模型使用基于rRNA和蛋白质的系统发育树来描述真核生物的进化起源。
