Osmotic induction of stress-responsive gene expression in the lobster Homarus americanus.

From: The Biological Bulletin | Date: December 1, 2002| Author: | Copyright information

The American lobster, Homarus americanus, encounters osmotic stress throughout its life cycle. To understand the molecular basis of osmotic stress responses in vivo, we used homologous cDNA probes to characterize the mRNA patterns of lobster HSP7O (=70-kDa heat-shock protein), HSP90 (90-kDa heat-shock protein), and polyubiquitin during hypo- and hyper-osmotic stress in abdominal muscle and hepatopancreas (a digestive tissue) at 30, 60, and 120 mm of osmotic stress. Hypo- and hyper-osmotic stress significantly increased the levels of the mRNAs encoding HSP7O and HSP90 in abdominal ...

Read all of this article with a FREE trial to HighBeam Research

Related newspaper, magazine, and trade journal articles from HighBeam Research

(Including press releases, facts, information, and biographies)

Integration of wounding and osmotic stress signals determines the expression of the AtMYB102 transcription factor gene1
; ...named AtM4, are rapidly induced by osmotic stress or abscisic acid (ABA) treatment. Reporter...untranslated region is essential for the osmotic stress and wounding induced expression of...signals derived from both wounding and osmotic stress. Abscisic acid (ABA) is the major plant...
Requirement for the Polarisome and Formin Function in Ssk2p-Mediated Actin Recovery From Osmotic Stress in Saccharomyces cerevisiae
; ABSTRACT Osmotic stress induces activation of an adaptive...the actin cytoskeleton following osmotic stress. In this study, we have employed...is the primary mediator of the osmotic stress response (reviewed by Sheikh-Hamad...
Cyclic AMP and Aquaporin Trafficking
; ...target membrane under conditions of osmotic stress. Indeed, in animals, regulatory...distribution of McTIPl;2 is altered by osmotic stress. Differences in the response of McTIPl;2 to salt and osmotic stress suggest that the ionic component...
Identification of a Novel Gene Family Involved in Osmotic Stress Response in Caenorhabditis elegans
; ...accumulates glycerol in response to osmotic stress, activated primarily by MAP kinase...different from yeast to mount a response to osmotic stress. ALL living organisms have mechanisms...taurine (BURG et al. 1997). Adaptation to osmotic stress has been studied extensively in yeast...
Proteomic Identification of Annexins, Calcium-Dependent Membrane Binding Proteins That Mediate Osmotic Stress and Abscisic Acid Signal Transduction in Arabidopsis
; ...annAt4, displayed hypersensitivity to osmotic stress and abscisic acid (ABA) during germination...and AnnAt4 play important roles in osmotic stress and ABA signaling in a Ca^sup 2+^-dependent...cytosol, which in turn induce ionic and osmotic stress in plants, respectively. ...
The effect of water on the rate of conformational change in protein allostery
; ...photodissociation of aqueous HbCO complex under osmotic stress induced by the nonbinding cosolute...constants and amplitudes as a function of osmotic stress and viscosity. Increases in time constants...for small cosolutes showed that both osmotic stress and solvent viscosity are ...
Osmotic stress induces terminal differentiation in cultured normal human epidermal keratinocytes
; ...possible signal is dehydration or osmotic stress. To test this hypothesis, we investigated the effects of osmotic stress on markers of differentiation...induce a dehydration effect or osmotic stress on the keratinocytes. These sorbitol...
An Arabidopsis GSK3/shaggy-like gene that complements yeast salt stress-sensitive mutants isinduced by NaCl and abscisic acid
; ...suggest that AtGSK1 is involved in the osmotic stress response in Arabidopsis. Abbreviations...changes that occur upon exposure to osmotic stress (Walton, 1980; DuPont, 1992; Bohnert...of different mechanisms to cope with osmotic stress. Responses are especially well understood...
Osmotic and curvature stress affect PEG-induced fusion of lipid vesicles but not mixing of their lipids
; ...close contact was not influenced by osmotic stress or membrane curvature, although pore...same part of the fusion process as osmotic stress. We interpret this result to suggest...concentrations of 20-40 wt%, causing osmotic stress of cells or vesicles when PEG added...
Novel Regulation of Aquaporins during Osmotic Stress1
; ...regulation and redistribution in response to osmotic stress was investigated. Ice plant (Mesembryanthemum...maintain cellular osmolarity under osmotic-stress conditions. It seems intuitively obvious...which accompanies the perception of osmotic stress, have been shown to regulate the ...