期刊
DEVELOPMENT
卷 144, 期 13, 页码 2490-2503出版社
COMPANY BIOLOGISTS LTD
DOI: 10.1242/dev.151951
关键词
Mitochondria; Mitochondrial-nuclear incompatibility; Oogenesis; Stem cell; Embryogenesis; Drosophila
资金
- Indiana Clinical and Translational Sciences Institute (National Institutes of Health) [UL1 TR001108]
- IOS CAREER award (National Science Foundation) [1505247]
- Direct For Biological Sciences
- Division Of Integrative Organismal Systems [1505247] Funding Source: National Science Foundation
Mitochondrial dysfunction can cause female infertility. An important unresolved issue is the extent to which incompatibility between mitochondrial and nuclear genomes contributes to female infertility. It has previously been shown that a mitochondrial haplotype from D. simulans (simw(501)) is incompatible with a nuclear genome from the D. melanogaster strain Oregon-R (OreR), resulting in impaired development, which was enhanced at higher temperature. This mitonuclear incompatibility is between alleles of the nuclear-encoded mitochondrial tyrosyl-tRNA synthetase (Aatm) and the mitochondrialencoded tyrosyl-tRNA that it aminoacylates. Here, we show that this mito-nuclear incompatibility causes a severe temperature-sensitive female infertility. The OreR nuclear genome contributed to death of ovarian germline stem cells and reduced egg production, which was further enhanced by the incompatibility with simw(501) mitochondria. Mito-nuclear incompatibility also resulted in aberrant egg morphology and a maternal-effect on embryonic chromosome segregation and survival, which was completely dependent on the temperature and mito-nuclear genotype of the mother. Our findings show that maternal mito-nuclear incompatibility during Drosophila oogenesis has severe consequences for egg production and embryonic survival, with important broader relevance to human female infertility and mitochondrial replacement therapy.
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