Genetic dissection of late-life fertility in caenorhabditis elegans

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Abstract

The large post-reproductive life span reported for the free-living hermaphroditic nematode, Caenorhabditis elegans, which lives for about 10 days after its 5-day period of self-reproduction, seems at odds with evolutionary theory. Species with long post-reproductive life spans such as mammals are sometimes explained by a need for parental care or transfer of information. This does not seem a suitable explanation for C elegans. Previous reports have shown that C elegans can regain fertility when mated after the self-fertile period but did not report the functional limits. Here, we report the functional life span of the C elegans germ line when mating with males. We show that C elegans can regain fertility late in life (significantly later than in previous reports) and that the end of this period corresponds quite well to its 3-week total life span. Genetic analysis reveals that late-life fertility is controlled by conserved pathways involved with aging and dietary restriction. © The Author 2011. Published by Oxford University Press on behalf of The Gerontological Society of America. All rights reserved.

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Mendenhall, A. R., Wu, D., Park, S. K., Cypser, J. R., Tedesco, P. M., Link, C. D., … Johnson, T. E. (2011). Genetic dissection of late-life fertility in caenorhabditis elegans. Journals of Gerontology - Series A Biological Sciences and Medical Sciences, 66 A(8), 842–854. https://doi.org/10.1093/gerona/glr089

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