Stress tolerance during diapause and quiescence of the brine shrimp, Artemia

Cell Stress & Chaperones
Thomas H MacRae

Abstract

Oviparously developing embryos of the brine shrimp, Artemia, arrest at gastrulation and are released from females as cysts before entering diapause, a state of dormancy and stress tolerance. Diapause is terminated by an external signal, and growth resumes if conditions are permissible. However, if circumstances are unfavorable, cysts enter quiescence, a dormant stage that continues as long as adverse conditions persist. Artemia embryos in diapause and quiescence are remarkably resistant to environmental and physiological stressors, withstanding desiccation, cold, heat, oxidation, ultraviolet radiation, and years of anoxia at ambient temperature when fully hydrated. Cysts have adapted to stress in several ways; they are surrounded by a rigid cell wall impermeable to most chemical compounds and which functions as a shield against ultraviolet radiation. Artemia cysts contain large amounts of trehalose, a non-reducing sugar thought to preserve membranes and proteins during desiccation by replacing water molecules and/or contributing to vitrification. Late embryogenesis abundant proteins similar to those in seeds and other anhydrobiotic organisms are found in cysts, and they safeguard cell organelles and proteins during desiccation....Continue Reading

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Citations

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Aug 26, 2018·Proteomics·Brett JanisMichael A Menze
Oct 4, 2017·Journal of Biomolecular Structure & Dynamics·Brett JanisMichael A Menze
Jan 9, 2019·Biochemistry and Cell Biology = Biochimie Et Biologie Cellulaire·Hajer Salem MalitanThomas H MacRae
Oct 17, 2016·Essays in Biochemistry·Annika Strauch, Martin Haslbeck
Jun 22, 2019·Scientific Reports·Evelien RozemaEsther Lubzens
Sep 9, 2020·Cell Stress & Chaperones·James S Clegg
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Feb 22, 2018·Proceedings of the National Academy of Sciences of the United States of America·Pavel V MazinOleg Gusev
Nov 17, 2020·Frontiers in Physiology·Jonathan D HibshmanBob Goldstein
Nov 30, 2016·International Journal of Biological Macromolecules·Zeinab TakallooTaghi Moazzenzade

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