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Journal of Fungi, Volume 8, Issue 10

2022 October - 132 articles

Cover Story: The formation of fruiting bodies is a highly regulated process that requires the concerted formation of various cell types. Though many developmental factors have been identified, a complete understanding of this process is still lacking. In this study, we analyze the sterile mutant pro34 of Sordaria macrospora. Genome sequencing revealed a deletion in the pro34 gene encoding a putative assembly factor of mitochondrial respiratory chain complex I. We showed that PRO34 is a mitochondrial protein and that the pro34 mutant lacks mitochondrial complex I. Inhibitor experiments revealed that pro34 respires via complexes III and IV, but also shows induction of alternative oxidase, a shunt pathway to bypass these complexes. We discuss the hypothesis that alternative oxidase is induced to prevent retrograde electron transport to complex I intermediates, thereby protecting from oxidative stress. View this paper
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J. Fungi - ISSN 2309-608X