Journal
CELL REPORTS
Volume 12, Issue 7, Pages 1144-1158Publisher
CELL PRESS
DOI: 10.1016/j.celrep.2015.07.022
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Funding
- Hallsten Research Foundation
- Ake Wiberg Foundation
- Swedish Research Council
- Russian Foundation for Basic Research [14-04-32027, 15-04-07573, 15-29-02650]
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Many organisms survive in constantly changing environments, including cycling seasons. Developing embryos show remarkable instant adaptations to the variable environmental challenges they encounter during their adult life, despite having no direct contact with the changing environment until after birth or hatching. The mechanisms by which such non-genetic information is transferred to the developing embryos are largely unknown. Here, we address this question by using a freshwater pond snail (Lymnaea stagnalis) as a model system. This snail normally lives in a seasonal climate, and the seasons define its locomotion, feeding, and reproductive behavior. We discovered that the serotonergic system plays a crucial role in transmitting a non-genetic instructive signal from mother to progeny. This maternal serotonin-based signal functions in embryos during a short time window at exclusively early pre-neural developmental stages and modulates the dynamics of embryonic and juvenile growth, feeding behavior, and locomotion.
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