Gagat Przemysław, Mackiewicz Dorota, Mackiewicz Paweł
Department of Genomics, Faculty of Biotechnology, University of Wrocław, Wrocław, Poland.
Mitochondrial DNA B Resour. 2017 Apr 1;2(1):191-195. doi: 10.1080/23802359.2017.1307699.
After the establishment of an endosymbiotic relationship between a proto-mitochondrion and its probable archaeal host, mitochondrial genomes underwent a spectacular reductive evolution. An interesting pathway was chosen by mitogenomes of unicellular protists called dinoflagellates, which experienced an additional wave of reduction followed by amplification and rearrangement leading to their secondary complexity. The former resulted in a mitogenome consisting of only three protein-coding genes, the latter in their multiple copies being scattered across numerous chromosomes and the evolution of complex processes for their expression. These stunning features raise a question about the future of the dinoflagellate mitochondrial genome.
在原始线粒体与其可能的古菌宿主之间建立内共生关系后，线粒体基因组经历了显著的简化进化。单细胞原生生物甲藻的线粒体基因组选择了一条有趣的途径，它们经历了额外的一轮简化，随后是扩增和重排，从而导致其具有二级复杂性。前者产生了仅由三个蛋白质编码基因组成的线粒体基因组，后者则使其多个拷贝分散在众多染色体上，并进化出复杂的表达过程。这些惊人的特征引发了关于甲藻线粒体基因组未来的问题。
