Differential Response of the Catalase, Superoxide Dismutase and Glycerol-3-phosphate Dehydrogenase to Different Environmental Stresses in Debaryomyces nepalensis NCYC 3413

@article{Kumar2010DifferentialRO,
  title={Differential Response of the Catalase, Superoxide Dismutase and Glycerol-3-phosphate Dehydrogenase to Different Environmental Stresses in Debaryomyces nepalensis NCYC 3413},
  author={Sawan Kumar and Gayathiri T. Kalyanasundaram and Sathyanarayana N. Gummadi},
  journal={Current Microbiology},
  year={2010},
  volume={62},
  pages={382-387}
}
The effect of salt, pH, and temperature stress on the cellular level of antioxidant enzymes, catalase and superoxide dismutase (SOD) and glycerol-3-phosphate dehydrogenase (G3PDH) was studied in Debaryomyces nepalensis NCYC 3413, a halotolerant yeast. The catalase activity increased in different phases, while SOD and G3PDH activities declined in late stationary phase. A significant increase in SOD activity was observed under different stress as compared to control. Salt and temperature stress… 
Effect of sodium chloride and cadmium on the growth, oxidative stress and antioxidant enzyme activities of Zygosaccharomyces rouxii
Zygosaccharomyces rouxii is a salt-tolerant yeast species capable of removing cadmium (Cd) pollutant from aqueous solution. Presently, the physiological characteristics of Z. rouxii under the stress
Temperature-stress tolerance of the fungal strain Aspergillus niger 26: physiological and ultrastructural changes
TLDR
Transmission electron microscopy of fungal cultures heated at 40 °C demonstrated abnormal wavy septation with reduced amount of chitin (as shown by WGA-gold labelling), intrahyphal hyphae development, disintegration of mitochondria and extensive autolysis.
Putative 3-nitrotyrosine detoxifying genes identified in the yeast Debaryomyces hansenii: In silico search of regulatory sequences responsive to salt and nitrogen stress
TLDR
Evaluating the D. hansenii capacity to assimilate 3-nitrotyrosine as a unique nitrogen source, and measuring its denitrase activity under NaCl stress suggested that given the lack of information for transcriptional factors in D.hansenii, genes identified by the in silico analysis may help to explain 3-Nitrotyosine assimilation mechanisms.
RESEARCH ARTICLE Anti-Oxidant enzyme levels and quantification of Reactive oxygen species in Mycobacterium aurum RadhikaPothi
TLDR
The level of antioxidant enzyme levels in correlation with quantified reactive oxygen species and cell survival across growth phases of Mycobacteria aurum is investigated, which is one among known GC rich actinomycete and a surrogate strain for mycobacterium tuberculosis.
Osmolyte Signatures for the Protection of Aspergillus sydowii Cells under Halophilic Conditions and Osmotic Shock
TLDR
Findings indicate that halophilic fungi such as A. sydowii utilize different osmoadaptation mechanisms to hypersaline conditions, which depend on whether the fungus is exposed to hypo- or hyperosmotic stress.
Unraveling the expression of genes involved in the biosynthesis pathway of cardiolipin and phosphatidylethanolamine in Salmonella Hadar grown under static magnetic field 200 mT.
TLDR
It is concluded that cls, g3pd and pssA genes are required in the adaptation of Salmonella Hadar to SMF.
High-Temperature Induced Changes of Extracellular Metabolites in Pleurotus ostreatus and Their Positive Effects on the Growth of Trichoderma asperellum
TLDR
A first view is provided that high temperature affects the extracellular metabolites of P. ostreatus, and the extensive change in metabolites promotes T. asperellum growth.
Application of Universal Stress Proteins in Probing the Dynamics of Potent Degraders in Complex Terephthalate Metagenome
TLDR
These highly dynamic microbes could serve as taxonomic biomarkers for toxic thresholds related to terephthalate and its derivatives and have future in biotechnological applications in bioremediation of toxic chemicals and radionuclides.
Oscillatory dynamics mechanism induced by protein synthesis time delay in quorum-sensing system.
TLDR
The results show that the time delay is a prerequisite for inducing oscillation of the quorum-sensing system, and the length of time delay can determine the amplitude and period of oscillation.

References

SHOWING 1-10 OF 24 REFERENCES
Protective role of antioxidant enzymes under high temperature stress.
TLDR
HDR-77 and HD 2815, which showed highest activity of various antioxidant enzymes under late and very late sowing also showed minimum reduction in chlorophyll content and lower membrane injury index, indicating the amelioration of high temperature stress induced oxidative stress by antioxidant enzymes.
The inductive responses of the antioxidant enzymes by salt stress in the rice (Oryza sativa L.)
TLDR
It is suggested that SOD leads to the overproduction of hydrogen peroxide in the leaves of rice plants subjected to salt stress, which induces the induction of specific APX isoforms but not specific GR isoforms under catalase deactivation.
Purification and characterization of glycerol-3-phosphate dehydrogenase (NAD+) in the salt-tolerant yeast Debaryomyces hansenii.
TLDR
It is proposed that the NAD-dependent Glycerol-3-phosphate dehydrogenase functions in cellular osmoregulation by providing glycerol 3-ph phosphate for the biosynthesis of glycersol, the main compatible solute in D. hansenii, and that the enzyme is well adapted to function in yeast cells exposed to osmotic stress.
GPD1, which encodes glycerol-3-phosphate dehydrogenase, is essential for growth under osmotic stress in Saccharomyces cerevisiae, and its expression is regulated by the high-osmolarity glycerol response pathway.
TLDR
Hog1 delta mutants lacking a protein kinase involved in osmostress-induced signal transduction failed to increase glycerol-3-phosphate dehydrogenase activity and mRNA levels when osmotic stress was imposed, suggesting the HOG pathway most probably has additional targets in the mechanism of adaptation to hypertonic medium.
Temperature downshift induces antioxidant response in fungi isolated from Antarctica
TLDR
This study showed that downshift from an optimal temperature to 15° or 6°C led to a cell response typical of oxidative stress: significant reduction of biomass production; increase in the levels of oxidative damaged proteins and accumulation of storage carbohydrates in comparison to growth at optimal temperature.
Combined Effects of Excess Mn and Low pH on Oxidative Stress and Antioxidant Enzymes in Cucumber Roots
The effects of excess Mn on oxidative stress and antioxidant enzymes in cucumber roots under different pH (pH 4.5 and 6.5) were studied. The results indicated that lipid peroxidation was increasingly
Reactive Oxygen Species Production in Wheat Roots Is Not Linked with Changes in H+ Fluxes During Acidic and Aluminium Stresses
TLDR
ROS production and breakdown in wheat seedlings under Al and acidic stresses appear to be linked to the intracellular metabolic changes rather than to the increased activity of plasma membrane-based NADPH-dependent ROS synthase.
Expression of Yeast YAP1 in Transgenic Arabidopsis Results in Increased Salt Tolerance
TLDR
It is demonstrated that an active oxygen scavenging system was enhanced to protect plants from salt stress by equilibrating ROS metabolism and implying that ROS production was reduced.
Osmoregulation and the Genetic Induction of Glycerol-3-phosphate Dehydrogenase by NaCl in the Euryhaline Yeast Debaryomyces hansenii
TLDR
The concept of transcriptional regulation of NAD+-GPD in D. hansenii cells is supported and there appears to be an upper limit of salt concentration above which the cells appear to be less responsive.
Characterization of a salt-induced DhAHP, a gene coding for alkyl hydroperoxide reductase, from the extremely halophilic yeast Debaryomyces hansenii
TLDR
For the first time, this study has identified alkly hydroperoxide reductase as a key protein involved in the salt tolerance of the extremely halophilic D. hansenii.
...
1
2
3
...