DNA Transfer from Organelles to the Nucleus: The Idiosyncratic Genetics of Endosymbiosis

被引:276
作者
Kleine, Tatjana [1 ]
Maier, Uwe G. [2 ]
Leister, Dario [1 ]
机构
[1] Univ Munich, Dept Biol 1, Lehrstuhl Bot, D-82152 Planegg Martinsried, Germany
[2] Univ Marburg, D-35032 Marburg, Germany
关键词
gene evolution; gene transfer; genome evolution; plastid; mitochondrion; NUMTs; NUPTs; DOUBLE-STRAND BREAKS; HUMAN MITOCHONDRIAL PSEUDOGENES; COMPLETE NUCLEOTIDE-SEQUENCE; CAUSES INCREASED ESCAPE; MG-PROTOPORPHYRIN IX; SACCHAROMYCES-CEREVISIAE; CHLOROPLAST GENOME; EUKARYOTIC CHROMOSOMES; INDEPENDENT TRANSFERS; ARABIDOPSIS-THALIANA;
D O I
10.1146/annurev.arplant.043008.092119
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
In eukaryotes, DNA is exchanged between eudosymbiosis-derived compartments (mitochondria and chloroplasts) and the nucleus. Organelle-to-nucleus DNA transfer involves repair of double-stranded breaks by nonhomologous end-joining, and resulted during early organelle evolution in massive relocation of organelle genes to the nucleus. A large fraction of the products of the nuclear genes so acquired are retargeted to their ancestral compartment; many others now function in new Subcellular locations. Almost all present-clay nuclear transfers of mitochondrial or plastid DNA give rise to noncoding sequences, dubbed nuclear mitochondrial DNAs (NUMTs) and nuclear plastid DNAs (NUPTs). Some of these sequences were recruited as exons, thus introducing new coding sequences into preexisting nuclear genes by a novel mechanism. In organisms derived from secondary or tertiary endosymbiosis, serial gene transfers involving nucleus-to-nucleus migration of DNA have also occurred. Intercompartmental DNA transfer therefore represents a significant driving force for gene and genome evolution, relocating and refashioning genes and contributing to genetic diversity
引用
收藏
页码:115 / 138
页数:24
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