title: [Effects of cadmium stress on the antioxidative system in Ganoderma lucidum mycelia].
abstract: The study on the effects of different concentration (0, 10, 50, 100, 200 and 400 micromol x L(-1)) cadmium (Cd) on the antioxidative system in Ganoderma lucidum mycelia indicated that with increasing concentration of Cd, the fresh mass and the proline, total polysaccharides, and reduced polysaccharides contents of G. lucidum mycelia decreased, but non-protein thiol (NPT) content increased. At 400 micromol x L(-1) of Cd, the NPT content increased dramatically, being 5.7 times higher than control. Within the range of test Cd concentrations, the activities of CAT, GR and POD increased first and decreased then, with the peak at 100 micromol x L(-1) of Cd, while the activities of LOX and SOD increased with increasing Cd concentration, with the maximum at 400 micromol x L(-1) of Cd. Polyacrylamide gel electrophoresis analysis revealed that 100-400 micromol x L(-1) of Cd induced two additional isozymes bands of Mn-SOD, 10-200 micromol x L(-1) of Cd increased the intensity of constitutive isozymes of CAT, POD, SOD and LOX, while 400 micromol x L(-1) of Cd decreased the intensity of isozymes of POD significantly.
authors.affiliation: College of Life Science, Anhui Science and Technology University, Bengbu 233100, Anhui, China. shwang70@yahoo.com.cn
authors.forename: Song-Hua
authors.initials: SH
authors.lastname: Wang
authors.forename: Hua
authors.initials: H
authors.lastname: Zhang
authors.forename: Yuan-Rong
authors.initials: YR
authors.lastname: Cui
authors.forename: Qing-Yuan
authors.initials: QY
authors.lastname: He
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zhang
mesh_terms: D000975:Antioxidants / Q000378:metabolism*; D002104:Cadmium / Q000633:toxicity*; D004305:Dose-Response Relationship, Drug; D004591:Electrophoresis, Polyacrylamide Gel; D032902:Ganoderma / Q000187:drug effects* / Q000201:enzymology / Q000378:metabolism; D025282:Mycelium / Q000187:drug effects* / Q000201:enzymology / Q000378:metabolism; D010544:Peroxidases / Q000378:metabolism; D013438:Sulfhydryl Compounds / Q000378:metabolism; D013482:Superoxide Dismutase / Q000378:metabolism
chemical_list: D000975:Antioxidants; D013438:Sulfhydryl Compounds; D002104:Cadmium; D010544:Peroxidases; D013482:Superoxide Dismutase