PNAS：基因转移与质体的进化

摘要 : 对关于质体复杂进化的研究的一项综述提示，真核生物进化的内共生与水平基因转移没有被充分理解

对关于质体复杂进化的研究的一项综述提示，真核生物进化的内共生与水平基因转移没有被充分理解，并且基因转移机制很可能导致了比此前认识到的更复杂的真核生物系统树。在质体的进化中，内共生蓝细菌逐渐把基因转移给了真核宿主细胞的核，并且逐渐失去了独立生存的能力。

原文链接：

genomic perspectives on the birth and spread of plastids

原文摘要：

The endosymbiotic origin of plastids from cyanobacteria was a landmark event in the history of eukaryotic Life. Subsequent to the evolution of primary plastids, photosynthesis spread from red and green algae to unrelated eukaryotes by secondary and tertiary endosymbiosis. Although the movement of cyanobacterial genes from endosymbiont to host is well studied, less is known about the migration of eukaryotic genes from one nucleus to the other in the context of serial endosymbiosis. Here I explore the magnitude and potential impact of nucleus-to-nucleus endosymbiotic gene transfer in the evolution of complex algae, and the extent to which such transfers compromise our ability to infer the deep structure of the eukaryotic tree of life. In addition to endosymbiotic gene transfer, horizontal gene transfer events occurring before, during, and after endosymbioses further confound our efforts to reconstruct the ancient mergers that forged multiple lines of photosynthetic microbial eukaryotes.

doi: 10.1073/PNAS.1421374112

作者：John M. Archibald

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