ORIGIN AND EVOLUTION OF ORGANELLE GENOMES
ORIGIN AND EVOLUTION OF ORGANELLE GENOMES
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DOI：
10.1016/0959-437x(93)90009-e
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发表时间：
1993-12-01
影响因子：
4
通讯作者：
GRAY, MW
中科院分区：
文献类型：
--
作者：
GRAY, MW
分子数据（特别是序列分析）已经确定，两种真核细胞器，胞体和质体，是内共生（eu）细菌的后代，其最近的活体亲属是α-变形菌门（α-Proteobacteria）（胞体）和蓝细菌门（质体）。这篇综述介绍了最近的数据，有利于认为，每个细胞器出现通过这一主要的内共生途径只有一次（单系起源），如组I内含子的发现，似乎是结构上同源的，并具有相同的插入位点的干细胞，绿藻和真菌线粒体基因组。然而，同样明显的是，某些藻类类群中的质体是通过真核生物而不是原核生物内共生体获得的。
Molecular data (particularly sequence analyses) have established that two eukaryotic organelles, the mitochondrion and the plastid, are the descendants of endosymbiotic (eu)bacteria whose closest living relatives are the alpha-Proteobacteria (mitochondrion) and Cyanobacteria (plastid). This review describes recent data that favor the view that each organelle arose via this primary endosymbiotic pathway only once (monophyletic origin), such as the discovery of group I introns that appear to be structurally homologous and have identical insertion sites in metaphyte, chlorophyte and fungal mitochondrial genomes. However, it is also evident that the plastids in certain algal groups were acquired secondarily through a eukaryotic rather than a prokaryotic endosymbiont.