Melanin production by a filamentous soil fungus in response to copper and localization of copper sulfide by sulfide-silver staining
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چکیده
منابع مشابه
Hydrogen sulfide protects coriander seedlings against copper stress by regulating the ascorbate-glutathione cycle, in leaves
Heavy metals are the cause of major abiotic stresses in plants and a principal contributor to environmental pollution in recent decades. This study investigated the effects of exogenous hydrogen sulfide on the ascorbate-glutathione cycle in the leaves of coriander seedlings under copper stress. Results showed that copper stress not only reduced APX and GR activities but also decreas...
متن کاملCopper sulfide precipitation by yeasts from Acid mine-waters.
Two strains of Rhodotorula and one of Trichosporon precipitated dissolved copper with H(2)S formed by reducing elemental sulfur with glucose. Iron stimulated this activity under certain conditions. In the case of Rhodotorula strain L, iron stimulated copper precipitation aerobically at a copper concentration of 18 but not 180 mug/ml. Anaerobically, the L strain required iron for precipitation o...
متن کاملPhotodegradation of HMX and RDX in the Presence of Nanocatalyst of Zinc Sulfide Doped with Copper
Nanoparticles of zinc sulfide as undoped and doped with copper were used as photocatalyst in the photodegradation of HMX (octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine) and RDX (hexahydro-1,3,5-trinitro-1,3,5-triazine) as nitramine explosives under UV and Vis irradiations. Photoreactivity of doped zinc sulfide was varied with dopant, mole fraction of dopant to zinc ion, pH of solut...
متن کاملFabrication of a Functionally Graded Copper-Zinc Sulfide Phosphor
Functionally graded materials (FGMs) are compositionally gradient materials. They can achieve the controlled distribution of the desired characteristics within the same bulk material. We describe a functionally graded (FG) metal-phosphor adapting the concept of the FGM; copper (Cu) is selected as a metal and Cu- and Cl-doped ZnS (ZnS:Cu,Cl) is selected as a phosphor and FG [Cu]-[ZnS:Cu,Cl] is f...
متن کاملCopper Sulfide Nanoparticles: from Synthesis to Biomedical Applications
1 Department of Pharmacology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, 280 South Chongqing Road, Shanghai, 200025, PR China 2 Translational Medicine Collaborative Innovation Center, Shanghai Jiao Tong University School of Medicine, 280 South Chongqing Road, Shanghai, 200025, PR China 3 Collaborative Innovation Center of Systems Biomedicine, Shanghai Jiao ...
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ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 1995
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.61.5.1968-1975.1995