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We isolated and characterized a novel spontaneous longevity mutant of Podospora anserina strain Wa32 carrying one of the pAL2-1 homologous mitochondrial plasmids. This mutant is at least ten fold longer-lived than the wild type, and is hence a formal suppressor of both the regular and the ‘plasmid-based’ senescence process. We show that the longevity trait is maternally inherited and coincides with...
Abstract A degenerative syndrome associated with the accumulation of site-specific deletions within mitochondrial chromosomes occurs in strains of Podospora anserina carrying the AS1-4 nuclear mutation. The site-specific deletion event has been assumed to result from the transposition of a group-II intron (intron ) behind an IBS motif, followed by recombination between the two intron repeats. We show...
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