Quantum-like decreased embryogenesis time with increased cold exposure time
| Autor: | Joshua P. Nederveen, Tarushika Vasanthan, J. R. Stone |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Embryo Nonmammalian Time Factors Acclimatization Biological age Cold exposure Theoretical models Embryonic Development lcsh:Medicine Hypsibius dujardini Article Incubation period Andrology 03 medical and health sciences 0302 clinical medicine Tardigrada Animals lcsh:Science Life Cycle Stages Multidisciplinary biology Embryogenesis lcsh:R Chronological age biology.organism_classification Cold Temperature 030104 developmental biology Quantum Theory lcsh:Q Tardigrade Cell Division 030217 neurology & neurosurgery |
| Zdroj: | Scientific Reports, Vol 9, Iss 1, Pp 1-4 (2019) Scientific Reports |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-018-35396-2 |
| Popis: | Three theoretical models have been proposed to explain lifespan extension resulting from exposure to extreme conditions in microscopic animals: individuals become completely dormant and stop aging, continue to age or age but at a diminished rate. Here we show that the earliest life history stages, embryonic cell divisions, in the tardigrade species Hypsibius dujardini are retarded when eggs are reared at 0 °C. Compared to control specimens reared at 22 °C, juveniles that hatched from eggs exposed to 0 °C for 4 days and returned to 22 °C experienced a three-day lag, indicating that their biological age was less than their chronological age. As cold exposure duration increased (days = 10, 20, 40), incubation period at 22 °C decreased incrementally (days = 3, 2, 1), suggesting that tardigrades involve a threshold-determined, quantum-like, energetic-based system for controlling embryogenesis. |
| Databáze: | OpenAIRE |
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