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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Simek, Petr Zahradnícková, Helena Cimlová, Jana Stetina, Tomás Kostál, Vladimír |
| Description | Author Affiliation: Kostál V ( Institute of Entomology, Biology Centre ASCR (Academy of Sciences of the Czech Republic), Branisovská 31, 370 05 Ceské Budejovice, Czech Republic. kostal@entu.cas.cz); |
| Abstract | Among vertebrates, only a few species of amphibians and reptiles tolerate the formation of ice crystals in their body fluids. Freeze tolerance is much more widespread in invertebrates, especially in overwintering insects. Evolutionary adaptations for freeze tolerance are considered to be highly complex. Here we show that surprisingly simple laboratory manipulations can change the chill susceptible insect to the freeze tolerant one. Larvae of Drosophila melanogaster, a fruit fly of tropical origin with a weak innate capacity to tolerate mild chilling, can survive when approximately 50% of their body water freezes. To achieve this goal, synergy of two fundamental prerequisites is required: (i) shutdown of larval development by exposing larvae to low temperatures (dormancy) and (ii) incorporating the free amino acid proline in tissues by feeding larvae a proline-augmented diet (cryopreservation). |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 9 |
| Volume Number | 109 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2012-02-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Cryoprotective Agents Pharmacology Drosophila Melanogaster Physiology Freezing Proline Adaptation, Physiological Animals Body Water Crystallization Diet Drug Effects Growth & Development Ice Larva Metamorphosis, Biological Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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