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Responses of Microorganisms to Osmotic Stress
Annual Review of Microbiology, 2019The cytoplasm of bacterial cells is a highly crowded cellular compartment that possesses considerable osmotic potential. As a result, and owing to the semipermeable nature of the cytoplasmic membrane and the semielastic properties of the cell wall, osmotically driven water influx will generate turgor, a hydrostatic pressure considered critical for ...
Erhard, Bremer, Reinhard, Krämer
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The dynamics of the stress stage of osmotic haemolysis
Journal of Biomechanics, 1983A simple physical model for the dynamics of the stress stage of osmotic haemolysis is presented. An 'elastic restitutive coefficient' for the red cell membrane is defined to relate the increase of internal pressure to the volume change during the stress stage, and it is estimated on the basis of the work of Evans et al. (1976, 1977).
H A, Massaldi, A, Fuchs, C H, Borzi
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2007
Mammalian renal inner medullary cells are normally exposed to extremely high NaCl concentrations. The interstitial NaCl concentration in parts of a normal renal medulla can be 500 mM or more, depending on the species. Remarkably, under these normal conditions, the high NaCl causes DNA damage, yet the cells survive and function both in cell culture and ...
Natalia I, Dmitrieva, Maurice B, Burg
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Mammalian renal inner medullary cells are normally exposed to extremely high NaCl concentrations. The interstitial NaCl concentration in parts of a normal renal medulla can be 500 mM or more, depending on the species. Remarkably, under these normal conditions, the high NaCl causes DNA damage, yet the cells survive and function both in cell culture and ...
Natalia I, Dmitrieva, Maurice B, Burg
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Osmotic stress sensing and signaling in fishes
The FEBS Journal, 2007In their aqueous habitats, fish are exposed to a wide range of osmotic conditions and differ in their abilities to respond adaptively to these variations in salinity. Fish species that inhabit environments characterized by significant salinity fluctuation (intertidal zone, estuaries, salt lakes, etc.) are euryhaline and able to adapt to osmotic stress.
Diego F, Fiol, Dietmar, Kültz
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Response of the lens to oxidative-osmotic stress
Experimental Eye Research, 1983Both aldose reductase and glutathione reductase share a common cofactor, NADPH. Glutathione reductase is preferentially activated due to its higher affinity for the cofactor. Since NADPH is primarily consumed by glutathione reductase, which in conjunction with glutathione peroxidase detoxifies H2O2 present in the aqueous humor, the cataractogenic role ...
H M, Cheng, P, Fagerholm, L T, Chylack
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Science Signaling, 2000
Plants can adapt to osmotic stress by rapidly expressing genes that will counter imbalances in ions, cell volume, and turgor pressure. Hoyos and Zhang show that two kinases are rapidly expressed and activated upon exposure to high salt conditions. One kinase appears to be a MAP kinase family member that was previously identified as a salicylic acid ...
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Plants can adapt to osmotic stress by rapidly expressing genes that will counter imbalances in ions, cell volume, and turgor pressure. Hoyos and Zhang show that two kinases are rapidly expressed and activated upon exposure to high salt conditions. One kinase appears to be a MAP kinase family member that was previously identified as a salicylic acid ...
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Spermatozoal response to osmotic stress
Animal Reproduction Science, 2005The process of sperm cryopreservation imparts on sperm cells the stress of low-temperature and drastic osmotic change. Damage to the cell plasma membrane results in cell injury in a number of cellular structures and associated functions. Studies in the author's laboratory have focused upon the various mechanisms of osmotic and thermal injury including ...
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Auxin response under osmotic stress
Plant Molecular Biology, 2016The phytohormone auxin (indole-3-acetic acid, IAA) is a small organic molecule that coordinates many of the key processes in plant development and adaptive growth. Plants regulate the auxin response pathways at multiple levels including biosynthesis, metabolism, transport and perception.
Victoria, Naser, Eilon, Shani
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Osmotic stress adaptations in rhizobacteria
Journal of Basic Microbiology, 2012AbstractRhizobacteria have been reported to be beneficial to the plants in many different ways. Increasing salinity in the coastal agricultural zones has been shown to be a threat to the plant and microbial life in the area. Exposure of microorganisms to high‐osmolality environments triggers rapid fluxes of cell water along the osmotic gradient out of ...
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Effect of an osmotic stress on multicellular aggregates
Methods, 2016There is increasing evidence that multicellular structures respond to mechanical cues, such as the confinement and compression exerted by the surrounding environment. In order to understand the response of tissues to stress, we investigate the effect of an isotropic stress on different biological systems.
Monnier, Sylvain +5 more
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