title: Response to copper and sodium chloride excess in Spirulina sp. (cyanobacteria).
abstract: Physiological responses of the cyanobacterium, Spirulina sp., were evaluated following exposure to copper (0.1 and 1.0 mg/L) and sodium chloride (0.2 and 0.4 mol/L) for 7 days. Growth and chlorophyll a content exhibited decreases at most exposure levels, while increases occurred for malondialdehyde at all exposure levels. Proline content was increased at the higher exposure levels. Carotenoid levels of Spirulina sp. were not significantly changed. Increased amounts of malondialdehyde were indicative of free radical formation in Spirulina sp. under the stress, while increasing levels of proline pointed to the occurrence of a scavenging mechanism. Concentrations of copper in Spirulina sp. decreased with increasing concentrations of NaCl.
authors.affiliation: Department of Biology, Faculty of Arts and Science, Kahramanmaras Sutcu Imam University, 46100 Kahramanmaras, Turkey. f_deniz@windowslive.com
authors.forename: F
authors.initials: F
authors.lastname: Deniz
authors.forename: S D
authors.initials: SD
authors.lastname: Saygideger
authors.forename: S
authors.initials: S
authors.lastname: Karaman
mesh_terms: D002734:Chlorophyll / Q000032:analysis; D000077194:Chlorophyll A; D003300:Copper / Q000493:pharmacokinetics / Q000633:toxicity*; D004781:Environmental Exposure / Q000032:analysis*; D008315:Malondialdehyde / Q000032:analysis / Q000378:metabolism; D011392:Proline / Q000032:analysis / Q000378:metabolism; D012965:Sodium Chloride / Q000493:pharmacokinetics / Q000633:toxicity*; D053545:Spirulina / Q000187:drug effects* / Q000254:growth & development* / Q000378:metabolism; D013312:Stress, Physiological
chemical_list: D002734:Chlorophyll; D012965:Sodium Chloride; D008315:Malondialdehyde; D003300:Copper; D011392:Proline; D000077194:Chlorophyll A