Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 455527
Title Does autophagy mediate age-dependent effect of dietary restriction responses in the filamentous fungus Podospora anserina?
Author(s) Diepeningen, A.D. van; Engelmoer, D.J.P.; Sellem, C.H.; Huberts, D.H.E.W.; Slakhorst, S.M.; Sainsard-Chanet, A.; Zwaan, B.J.; Hoekstra, R.F.; Debets, A.J.M.
Source Philosophical Transactions of the Royal Society B. Biological sciences 369 (2014)1646. - ISSN 0962-8436
Department(s) Laboratory of Genetics
Publication type Refereed Article in a scientific journal
Publication year 2014
Keyword(s) life-span extension - calorie restriction - cell-death - saccharomyces-cerevisiae - mitochondrial fission - uth1 gene - senescence - plasmid - yeast - degradation
Abstract Autophagy is a well-conserved catabolic process, involving the degradation of a cell's own components through the lysosomal/vacuolar machinery. Autophagy is typically induced by nutrient starvation and has a role in nutrient recycling, cellular differentiation, degradation and programmed cell death. Another common response in eukaryotes is the extension of lifespan through dietary restriction (DR). We studied a link between DR and autophagy in the filamentous fungus Podospora anserina, a multicellular model organism for ageing studies and mitochondrial deterioration. While both carbon and nitrogen restriction extends lifespan in P. anserina, the size of the effect varied with the amount and type of restricted nutrient. Natural genetic variation for the DR response exists. Whereas a switch to carbon restriction up to halfway through the lifetime resulted in extreme lifespan extension for wild-type P. anserina, all autophagy-deficient strains had a shorter time window in which ageing could be delayed by DR. Under nitrogen limitation, only PaAtg1 and PaAtg8 mediate the effect of lifespan extension; the other autophagy-deficient mutants PaPspA and PaUth1 had a similar response as wild-type. Our results thus show that the ageing process impinges on the DR response and that this at least in part involves the genetic regulation of autophagy
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