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The mitochondrial plasmid pAL2-1 reduces calorie restriction mediated life span extension in the filamentous fungus Podospora anserina
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Systematic Biology. (Ethnobotany)
2004 (English)In: Fungal Genetics and Biology, Vol. 41, 865-871 p.Article in journal (Refereed) Published
Abstract [en]

Calorie restriction is the only life span extending regimen known that applies to all aging organisms. Although most fungi do not appear to senesce, all natural isolates of the modular filamentous fungus Podospora anserina have a limited life span. In this paper, we show that calorie restriction extends life span also in Podospora anserina. The response to glucose limitation varies significantly among 23 natural isolates from a local population in The Netherlands, ranging from no effect up to a 5-fold life span extension. The isolate dependent effect is largely due to the presence or absence of pAL2-1 homologous plasmids. These mitochondrial plasmids are associated with reduced life span under calorie restricted conditions, suggesting a causal link. This has been substantiated using three combinations of isogenic isolates with and without plasmids. A model is proposed to explain how pAL2-1 homologues influence the response to calorie restriction.

Place, publisher, year, edition, pages
2004. Vol. 41, 865-871 p.
National Category
Social Sciences Interdisciplinary
Identifiers
URN: urn:nbn:se:uu:diva-72255OAI: oai:DiVA.org:uu-72255DiVA: diva2:100166
Available from: 2005-05-19 Created: 2005-05-19 Last updated: 2012-01-10

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de Boer, Hugo J.

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