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Comparative Transcriptomic Analysis of the Mechanisms Underpinning Ageing and Fecundity in Social Insects
Judith Korb
Karen Meusemann
Denise Aumer
Abel Bernadou
Daniel Elsner
Barbara Feldmeyer
Susanne Foitzik
Jürgen Heinze
Romain Libbrecht
Silu Lin
Megha Majoe
José Manuel Monroy Kuhn
Volker Nehring
Matteo Negroni
Robert Paxton
Alice Caroline Séguret
Marah Stoldt
Thomas Flatt
[Study Group] The So-Long Consortium
出版
Universität
, 2021
URL
http://books.google.com.hk/books?id=bxC0zwEACAAJ&hl=&source=gbs_api
註釋
Abstract: The exceptional longevity of social insect queens despite their lifelong high fecundity remains poorly understood in ageing biology. To gain insights into the mechanisms that might underlie ageing in social insects, we compared gene expression patterns between young and old castes (both queens and workers) across different lineages of social insects (two termite, two bee and two ant species). After global analyses, we paid particular attention to genes of the insulin/insulin-like growth factor 1 signalling (IIS)/target of rapamycin (TOR)/juvenile hormone (JH) network, which is well known to regulate lifespan and the trade-off between reproduction and somatic maintenance in solitary insects. Our results reveal a major role of the downstream components and target genes of this network (e.g. JH signalling, vitellogenins, major royal jelly proteins and immune genes) in affecting ageing and the caste-specific physiology of social insects, but an apparently lesser role of the upstream IIS/TOR signalling components. Together with a growing appreciation of the importance of such downstream targets, this leads us to propose the TI-J-LiFe (TOR/IIS-JH-Lifespan and Fecundity) network as a conceptual framework for understanding the mechanisms of ageing and fecundity in social insects and beyond