title: Effects of salinity on growth and nickel accumulation capacity of Lemna gibba (Lemnaceae).
abstract: The effect of salinization of water on the growth rate and nickel accumulation capacity of Lemna gibba was studied under laboratory conditions. At high salinity (375 and 500 mol m(-3) NaCl), we observed that decreasing growth rate with increasing water salt level. Especially, at a salinity of 500 mol m(-3) NaCl, the net growth rate became negative. Additionally, growth rate of roots was significantly reduced at salinity of 250 mol m(-3) NaCl and significantly reduced at 500 mol m(-3) NaCl compared to a freshwater control. Biomass production was inhibited by an increase in salinity. Furthermore, high salinity caused decreasing nickel accumulation by L. gibba. In this study, a simple model was created according to data obtained from this study. The model has suggested that salinity is an important factor in limitation of growth of L. gibba.
authors.affiliation: Erciyes University, Faculty of Sciences and Arts, Department of Biology, 38039 Kayseri, Turkey. demirez@erciyes.edu.tr
authors.forename: Dilek Demirezen
authors.initials: DD
authors.lastname: Yilmaz
mesh_terms: D029064:Araceae / Q000254:growth & development* / Q000378:metabolism*; D018533:Biomass; D009532:Nickel / Q000378:metabolism*; D009994:Osmolar Concentration; D018517:Plant Roots / Q000254:growth & development; D012965:Sodium Chloride / Q000494:pharmacology*
chemical_list: D012965:Sodium Chloride; D009532:Nickel