期刊
MOLECULAR ECOLOGY
卷 30, 期 17, 页码 4155-4159出版社
WILEY
DOI: 10.1111/mec.16010
关键词
ATP synthase; ATP9; gene loss; mitochondrial genome; symbiosis
资金
- Natural Sciences and Engineering Research Council of Canada
The symbiotic relationship between lichen fungi and algae has been reevaluated in terms of ATP production, revealing that even though the ATP9 gene is lost in mitochondrial genomes, fungi can still produce ATP through nuclear genes.
Lichen fungi live in a symbiotic association with unicellular phototrophs and most have no known aposymbiotic stage. A recent study in Molecular Ecology postulated that some of them have lost mitochondrial oxidative phosphorylation and rely on their algal partners for ATP. This claim originated from an apparent lack of ATP9, a gene encoding one subunit of ATP synthase, from a few mitochondrial genomes. Here, we show that while these fungi indeed have lost the mitochondrial ATP9, each retain a nuclear copy of this gene. Our analysis reaffirms that lichen fungi produce their own ATP.
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